rotary clamp cylinders - leading distributor of electronic ... · rotary clamp cylinder: standard...

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Double Guide TypeSeries MK2Tø20, ø25, ø32, ø40, ø50, ø63

Heavy Duty TypeSeries MK2ø20, ø25, ø32, ø40ø50, ø63

StandardSeries MKø12, ø16, ø20, ø25ø32, ø40, ø50, ø63

Guide roller

Piston rod

Rod cover

Series MK/MK2/MK2TRotary Clamp Cylinders

P. 1236

P. 1244

P. 1254

3 times the allowable moment of inertia∗ Comparison with our MK2 series

Rotation mechanism uses 2 guide rollers.Non-rotating accuracy: ±0.9°⇒±0.5°(Clamp part)

Rotation angle: 90°±10°⇒90°±5°∗ Values for ø32, ø40. Comparison with our MK2 series

ø32, ø40

10-4

10-3

10-2

10-1

50 100 200Piston speed [mm/s]

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Standard arm

MK (Standard)

MK2 (Heavy duty type)

MK2T (Double guide type)

� Interchangeable mounting pitch(MK, MK2)

� Small auto switches mountable on 4 surfaces ∗ Bore size ø20, ø25

Horizontal mounting possibleHorizontal mounting possible

Rotation mechanism

1233

MK

CK�1

CLK2

CKQCLKQ

Individual-X�

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P1233-P1316-E.qxd 08.11.17 3:32 PM 233

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

Series MK/MK2/MK2TModel Selection

Ι (Moment of inertia)

SeriesItem

Max. piston speed Note) [mm/s]

Non-rotationg accuracy(Clamp part)

200

180

±1.4°

±1.2°

ø12, ø16

ø20, ø25

ø32 to ø63

ø12

ø16

ø20, ø25

ø32, ø40

ø50, ø63

±1.2°

±0.9°

±0.7°

90°±10°

Not allowed

200

MK MK2 MK2T

—

200

—

—

—

—

—

±1.0°

±0.5°

±0.5°

90°±5°

Allowed

Note) “Maximum piston speed” indicates the maximum speed possible when employing a standard arm.

Rotation angle Rotation angle

During unclamping(Extension end)

Counterclockwise


Clockwise

øDArm: Ι1

Arm weight: m1

Clamp jig: Ι2

Clamp jig weight: m2

Example) Find the moment of inertia of the arm.

Find the moment of inertia of the clamp jig.

(Calculation example) Cylinder bore size ø32 A = 0.07 m, B = 0.02 m, S = 0.012 m, L = 0.045 m, D = 0.02 m m1 = 0.16 kg, m2 = 0.15 kg

Find the actual moment of inertia.Ι = Ι1 + Ι2 = (1.6 + 3.0) x 10–4 = 4.6 x 10–4 kg·m2

Calculation Example (ø32, clamp stroke 10 mm)

AB

L

S

Ι1 = m1 · + m1 · – SA2 + B2

12A2

Ι1 = 0.16 x + 0.16 x = 1.6 x 10–4 kg·m2– 0.0120.072 + 0.022

12

2

0.072

Ι2 = 0.15 x + 0.15 x 0.0452 = 3.0 x 10–4 kg·m20.022

8

Ι2 = m2 · + m2 · L2D2

8

1.0 x 10–1

1.0 x 10–2

1.0 x 10–3

4.6 x 10–4

1.0 x 10–4

10 100

MK

MK2

MK2T

120 200

Bore size ø32, ø40

Maximum piston speed [mm/s]

Allo

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1000

[Actual calculation example]

SeriesMKMK2

Max. piston speed120 mm/s200 mm/s

Average piston speed Note 1)

75 mm/s125 mm/s

Stroke total

25 mm

Stroke time Note 2)

0.35 sec.0.2 sec.

Note 1) Average piston speed = Maximum piston speed ÷ 1.6.Note 2) Please use the stroke speeds indicated above.

During clamping (Retraction end)Non-rotating accuracy

2

Rotation angle

Horizontal mounting

1234

3-02-56-MK-MK2-MK2T.qxd 09.11.11 1:41 PM Page 1


Moment of Inertia


Allo

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g·m

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ø20, ø25

10–5

10–4

10–3

10–2

10–1

50 100 200

MK

MK2

MK2T

ø20, ø25 Standard arm single unit


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ø50, ø63

10–4

10–3

10–2

10–1

50 100 200

MK

MK2

MK2T



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ø12, ø16

10–6

10–5

10–4

10–3

50 100 200

MK

ø12 Standard arm single unit

ø16 Standard arm single unit


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ø32, ø40

10–4

10–3

10–2

10–1

50 100 200

MK

MK2

MK2T


Note) Maximum piston speed is equivalent to approximately 1.6x the average piston speed. (Rough indication)

1235

Model Selection

MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

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3-02-56-MK-MK2-MK2T.qxd 09.11.11 1:41 PM Page 2


Rotary Clamp Cylinder: Standard

ø12, ø16, ø20, ø25, ø32, ø40, ø50, ø63Series MK

How to Order

M—

�

Body Option Manufacturable RangeBore size

ø12, ø16ø20 to ø63

Nil

��

F—

�

N��

MF—

�

FN—

�

MK 10Rotary clamp cylinderStandard

Number of auto switches

R20A

NilS

2 pcs.1 pc.

F

Auto switch type

∗ For applicable auto switch models, refer to the below table.

Nil Without auto switch (Built-in magnet)

Body optionNilMFN

Standard (Female thread)Rod end width across flats ∗

With boss on head end ∗

With arm

Rotary direction(Unclamp → Clamp)

ClockwiseCounterclockwise

RL

Bore size12162025

12 mm16 mm20 mm25 mm

32405063

32 mm40 mm50 mm63 mm

Clamp strokeApplicable bore size

ø12 to ø40ø12 to ø63ø50 to ø63

Clamp stroke10 mm20 mm50 mm

Symbol102050

Mounting bracketApplicable bore sizeMounting

Through-hole/Both endstapped common (Standard)Both ends tappedThrough-holeHead end flange

Symbol

B ø12, ø16

ø20 to ø63ABG

∗ Lead wire length symbols: 0.5 m ·········· Nil (Example) M9NW1 m ·········· M (Example) M9NWM3 m ·········· L (Example) M9NWL5 m ·········· Z (Example) M9NWZ

None ·········· N (Example) J79CN

∗ Solid state auto switches marked with “�” are produced upon receipt of order.∗∗ For D-P4DW, ø40 to ø63 are available.∗∗ Only D-P4DW type is assembled at the time of shipment.

∗ Regarding body option manufacturable range, refer to the below table.

∗ Head end flange is equipped with a boss mounting. Be sure to specify body option “F”.

M9BW

M threadRc

NPTG

ø12 to ø25

ø32 to ø63

Port thread type

Nil

TNTF

∗ Since there are other applicable auto switches than listed, refer to page 1253 for details.∗ For details about auto switches with pre-wired connector, refer to pages 1784 and 1785.∗ When mounting models D-M9�(V), M9�W(V), M9�A(V), and A9�(V) with between ø32 and ø50 on sides other than the port side, please order a switch mounting bracket

separately as per the instructions on page 1252.∗ Auto switches are shipped together (not assembled).

Made to Order(Refer to page 1237.)

Applicable Auto Switches/Refer to pages 1719 to 1827 for further information on auto switches.

Type Special functionElectrical

entryWiring

(Output)

Load voltage Lead wire length (m)0.5(Nil)

3(L)

5(Z)

None(N)

Applicableload

Pre-wiredconnector

1(M)

Auto switch model

Perpendicular In-lineDC AC

ø20 to ø63ø12, ø16 ø20 to ø63ø12, ø165 V,12 V

12 V

5 V,12 V12 V5 V,12 V12 V

5 V, 12 V—

��—

��

��

———

�————————

��—

��

IC circuit

—

IC circuit

—

IC circuit

—IC circuit

—

————

��——

—

M9NVM9PVM9BV

M9NWVM9PWVM9BWVM9NAVM9PAVM9BAV

——

J79C

——

M9NM9PM9B—

M9NWM9PWM9BWM9NAM9PAM9BA

F79FP4DW∗∗

Diagnostic indication(2-color indication)

Water resistant(2-color indication)

Yes

Connector

Grommet

Grommet

24 V —Relay,PLC

3-wire (NPN)3-wire (PNP)

2-wire


2-wire3-wire (NPN)3-wire (PNP)

2-wire4-wire

2-wire (No polarity)

—

Relay,PLC

—

200 V100 V

100 V or less—

24 V or less—

24 V

—3-wire

(NPN equivalent)

2-wireNoYesNoYes

YesGrommet

Connector

Grommet

5 V

—12 V

5 V, 12 V12 V

5 V, 12 V—Diagnostic indication

(2-color indication)

Diagnostic output(2-color indication)

Magnetic field resistant(2-color indication)

�

��

�

��

—

———

��—

—

———

��—

—

——————

IC circuit

—

IC circuit—

IC circuit—

—

——————

A96V

A93VA90V

A96

A93A90———

—

———

A72

A73CA80CA79W

— A72H

Indica

tor lig

ht

Ree

d s

wit

chS

olid

sta

te s

wit

ch

1236

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1236


XB6 Heat resistant cylinder (–10 to 150°C)Symbol Description

Made to Order(For details, refer to page 1853.)

During unclamping(Extension end)80° to 100°(90°±10°)L type


80° to 100°(90°±10°)R type

Clamp part

During clamping (Retraction end)

Non-rotating accuracy±0.7° to 1.4°

Rotary Angle

Bore size (mm)1216202532405063

Part no.MK-A012MK-A016

MK-A020

MK-A032

MK-A050

Accessories

Clamp bolt,Hexagon sockethead cap screw,Hexagon nut,Spring washer

Option/Arm

ActionRotation angle Note 1)

Rotary direction Note 2)

Rotary stroke (mm)Clamp stroke (mm)Theoretical clamp force (N) Note 3)

FluidProof pressure

Operating pressure range

Bore size (mm)Double acting

90° ±10°Clockwise, Counterclockwise

Air1.5 MPa

Ambient and fluid temperature

LubricationPiping port sizeMountingCushionStroke length tolerancePiston speedNon-rotating accuracy (Clamp part) Note 1)

Without auto switch: –10 to 70°C (No freezing)With auto switch: –10 to 60°C (No freezing)

Non-lube

Rubber bumper

50 to 200 mm/s

0.1 to0.6 MPa

Note 4)

0.1 to 1 MPa

12 16 20 25 32 40 50

7.5 9.5 15 1910, 20 20, 50

63

40 75 100 185 300

Through-hole/Bothends tapped common Both ends tapped, Through-hole, Head end flange

525 825

±1.4° ±1.2° ±0.9° ±0.7°

M5 x 0.8

1400

+0.6–0.4

Rc1/8, NPT1/8, G1/8 Rc1/4, NPT1/4, G1/4

Note 1) Refer to “Rotary Angle” figure.Note 2) Direction of rotation viewed from the rod end when the piston rod is retracting.Note 3) At 0.5 MPa.Note 4) Operate within the pressure range of 0.1 to 0.6 MPa for ø63. When using a pressure range of 0.61 to 1.0

MPa, use the new MK series “-X2071” model. (Refer to the MK series catalog (CAT.ES20-214) for details.)

Specifications

Bore size (mm)202532405063

Part no.MK-F020MK-F025MK-F032MK-F040MK-F050MK-F063

Accessories

Centering location ring,Set pin,Bolt for cylinderbody

Mounting Bracket/Flange Note) Theoretical output (N) = Pressure (MPa) x Piston area (cm2) x 100 Operating direction

R: Rod end (Clamp)H: Head end (Unclamp)

Bore size(mm)

12

16

20

25

32

40

50

63

Rod size(mm)

Operatingdirection

6

8

12

12

16

16

20

20

RHRHRHRHRHRHRHRH

Piston area(cm2)

0.8 1.1 1.5

2 2 3

3.7 4.9

6 8

10.512.516.519.628 31.2

0.324 33 45 60

60.8 90.2112 149 182 243 319 380 502 596 851 948

0.5 40 55 75 100 100 149 185 245 300 400 525 625 825 98014001560

0.7 56 77 105 140 139 208 258 341 418 557 731 8701149136519502172

1.0 80 110 150 200 200 298 370 490 600 800105012501648196128013121

Operating pressure (MPa)

Unit: N

Theoretical Output

Clamp stroke(mm)102050

Bore size (mm)

Unit: g

127087—

16100123—

20250290—

25280320—

32500525—

40595640—

50—

11001350

63—

15201805

Mass/Through-hole Mounting

1237

Rotary Clamp Cylinder: Standard Series MK

Bore size (mm)Both ends tappedRod end width across flatsWith boss on head endWith armHead end flange (including mounting bolt)

Unit: g

12———13—

16———32—

20 6 10 2100133

25 7 10 3100153

32 7 21 5200166

40 6 21 7200198

50 7 46 13350345

63 17 46 25350531

Additional Mass

Calculation: (Example) MKG20-10RFN• Standard calculation: MKB20-10R• Extra mass calculation: Both ends tapped

Head end flangeWith boss on head endWith arm

250 g6 g

133 g2 g

100 g491 g

MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

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198-MK.qxd 10.10.7 4:29 PM Page 1


No.12345

6

7891011121314

Description MaterialAluminum alloyAluminum alloyAluminum alloy

Copper bearing materialStainless steelStainless steelCarbon steel

UrethaneCopper alloy

Stainless steel—

Chromium molybdenum steelSpring steel

Stainless steelCarbon tool steel

NoteHard anodizedHard anodized

ø32 to ø63 onlyNitriding

ø12 to ø25 Nitridingø32 to ø63 Heated, Nickel plated

ø20 to ø32 onlyExcept ø12, ø16

Sharp end section: 90°

Used at ø12, ø16, ø32 to ø63

Rod coverCylinder tubePistonBushingGuide pin

Piston rod

BumperRing nutScraper pressureMagnetHexagon socket head set screwRound R-type retaining ringParallel pinType C retaining ring

Component PartsNo.15161718192021

22

232425262728

Description MaterialRolled steel

Chromium molybdenum steelRolled steel

Chromium molybdenum steelHard steel

Aluminum alloyRolled steel

Aluminum alloyPhosphor bronze

NBRNBRNBRNBR

Chromiummolybdenum steel

Note

Except ø12, ø16Except ø12, ø16

ø12, ø16 onlyExcept ø12, ø16

ArmClamp boltHexagon nutHexagon socket head cap screwSpring washerCentering location ringFlangeHexagon socket head cap screw

Spacer for switch typeCoil scraperPiston sealGasketRod sealO-ring

Component Parts

ø20, ø25: 2ø32 to ø63: 4

Qty.

Replacement Parts: Seal Kitø12

MK-12-PSø16

MK-16-PSø20 to ø32

Not able to disassembleSet of nos. above @4 @5 @6 @7 @8

ø40MK-40-PS

ø50MK-50-PS

ø63MK-63-PS

Bore size (mm)Kit no.Content

∗ Seal kit includes @4 to @8. Order the seal kit, based on each bore size (except ø20 to ø32).∗ Since the seal kit does not include a grease pack, order it separately.

Grease pack part no.: GR-S-010 (10g)

Name plate

@3

@7 r i !1 t q @6 u !0 @5 w ey !2 @4 o

!6

!7

!5

!8

!9

@8

!4@1 @2

@0

y

!3

Construction

MK�12, 16 MK�20, 25

MK�32

MK�40 to 63

With arm (N)

Rod end width across flats (M)

With boss on head end (F)

Head end flange (G)

1238

Series MK

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1238


Note) Maximum piston speed (mm/s)

Mom

ent o

f ine

rtia

(kg

·m2 )

Operatingrange

Operatingrange

MK�50/63

MK�32/40

MK�20/25

MK�12/16

MK�50/63

MK�32/40

MK�20/25

MK�16

MKB12

Cylinder model C D8 8 8 8

10

9

10.5

7

6.511.5

10.5

50 60 50 60 75 85 75 85 85 95 75 85 95130100130

Mounting bolt sizeM3 x 50 LM3 x 60 LM3 x 50 LM3 x 60 LM5 x 75 LM5 x 85 LM5 x 75 LM5 x 85 LM5 x 85 LM5 x 95 LM5 x 75 LM5 x 85 LM6 x 95 LM6 x 130 LM8 x 100 LM8 x 130 L

MKB12-10MKB12-20MKB16-10MKB16-20MKB20-10MKB20-20MKB25-10MKB25-20MKB32-10MKB32-20MKB40-10MKB40-20MKB50-20MKB50-50MKB63-20MKB63-50

Precautions

Clamp Arm Mounting

Precautions for Designing and Mounting Arms

1. Use a clamp arm that is available as an option.To fabricate a clamp arm, make sure that the allowable bending moment and the inertial moment will be within the specified range.If a clamp arm that exceeds the specified value is installed, the internal mechanism in the cylinder could become damaged.

Caution

Ensuring Safety1. If one side of the piston is pressurized by sup-

plying air with the clamp arm attached, the piston will move vertically while the clamp arm rotates. This operation could be hazardous to personnel, as their hands or feet could get caught by the clamp arm, or could lead to equipment damage. Therefore, it is important to secure as a danger zone a cylindrical area with the length of the clamp arm as its radius, and the stroke plus 20 mm as its height.

Installation and Adjustment/Clamp Arm Removal and Reinstallation

1. During the removal or reinstallation of the clamp arm, make sure to use a wrench or a vise to secure the clamp arm before remov-ing or tightening the bolt.This is to prevent the bolt tightening torque from being applied to the piston rod, which could damage the cylinder’s internal mechanism.

Mounting Bolt for MKB

Note) Be sure to use a flat washer to mount ø12 and ø16 cylinders via through-holes.

When arms are to be made separately, their length and weight should be within the following range.

1. Allowable bending momentUse the arm length and operating pressure within Graph (1) for allowable bending mo-ment loaded piston rod.

2. Moment of inertiaWhen the arm is long and heavy, damage of internal parts may be caused due to iner-tia. Use the inertia moment and cylinder speed within Graph (2) based on arm require-ments.

Graph (1)

Graph (2)

When arm length is 8 cm, pressure should be less thanMK�20/25: 0.45 MPaMK�32/40: 0.55 MPa.Note) Operate within the pressure range of

0.1 to 0.6 MPa for ø63. When using a pressure range of 0.61 to 1.0 MPa, use the new MK series “-X2071” model. (Refer to the MK series catalog (CAT.ES20-214) for details.)

When arm’s moment of inertia is 3 x 10–4 kg·m2, cylinder speed should be less thanMK�20/25: 65 mm/sMK�32/40: 150 mm/s.For calculating moment of inertia, refer to pages 1234, 1235 and 1264.Note) Maximum piston speed is equivalent to

approximately 1.6x the average piston speed. (Rough indication)

• To attach and detach the arm to and from the piston rod, fix the arm with a wrench or vise and then tighten the bolt.(If an excessive force is applied in the rotary direction, it may bring about the damage to the internal mechanism.)Refer to the following table for the tightening torque for mounting.

Bore size (mm)1216

20, 2532, 4050, 63

Proper tightening torque0.4 to 0.6 2 to 2.4

4 to 6 8 to 1014 to 16

(N·m)

Be sure to read before handling.Refer to front matters 42 and 43 for Safety Instructions and pages 3 to 11 for Actua-tor and Auto Switch Precautions.

Arm

leng

th l

(cm

)


Hexagon wrenchkey

Arm

Wrench

Mounting bolt

Mounting: Mounting bolt for through-hole type is available.Ordering: Add the word “MKB” to the mounting bolt size.Example) M5 x 75 L (MKB)

Flatwasher

1239


Note) MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

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198-MK.qxd 10.10.7 4:29 PM Page 2


U

3

Q + 2 x Clamp stroke

4

3 5.5

R + Clamp stroke

S

øO

h9

ø12

2 x M5 x 0.8(Piping port)

8 to 18

E F25

K

�A

LB

C

–0.1�10–0.2

2 x ø5.5 through2 x 2 x ø9 counterbore depth 7

M8 x 1.25Effective thread depth 11

K

L

R + Clamp stroke(Basic)

1010

M6 x 1.0

Auto switchMinimum bending radiusof lead wire 10

E effective thread depth F2 x 4 x M4 x 0.7Effective depth 7

2 x M5 x 0.8

4 x

ø3.

5

Flat washer4 pcs.

35.5 + Clamp stroke

48 + 2 x Clamp stroke2 x 4 x ø6.5Counterbore depth 4

R thread

M + Clamp stroke

øB

�D

øG

H9

øH

�C

�A

N

S

O PQ

Model

MKB20MKB25

A36

40

B46.8

52

C36

40

E49

54.5

F25.5

28.5

K L Oh9 Q72.5

73.5

R62

63

S31

32

U4

5

0–0.052

0–0.052

20

23

13.5

16

±0.15

±0.15

±0.15

±0.15

7.5

8

Note) Dimension when the rod is extended is to be added to clamp stroke plus rotary stroke.

(mm)

A B C D E F G H25

29

32

38

15.5

20

5

7

M3 x 0.5

M5 x 0.8

5.5

6.5

11h9

14h9

6

8

MKB12MKB16

Model0

–0.043

0–0.043

(mm)

Model M18.5

21.5

N 8

11

O29

36

P20

25

Q4

5

RM3 x 0.5

M4 x 0.7

S 8

11

MKB12-��NMKB16-��N

(mm)

Through-hole (Basic): MKB

Both ends tapped: MKA

ø12

ø20, ø25

ø16

With arm: MK� -��N1216

Dimensions: ø12, ø16, ø20, ø25

2 x ø3.3 depth 3+0.15+0.05

1240

Series MK

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1240


ø

ø

Model

MKG20MKG25

B60

64

C39

42

D E±0.1

±0.1

25.5

28

±0.15

±0.15

48

52

(mm)

Model

MK�20-��FMK�25-��F

Ah90

–0.043

0–0.043

13

15

(mm)

12 to 22

R + Clamp stroke

+0.152 x ø6.3+0.05

(Special cap bolt)2 x M6 x 1.0

2 x ø6.6

42.5 + Clamp stroke

D

C

E B

Head end flange: MKG With boss on head end

Rod end width across flats: MK� -��M2025With arm: MK� -��N20

25

22 + Clamp stroke

2 x ø5.2

M6 x 1.0

1241


MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1241


Model

MKAMKA50MKA63

AM6 x 1.0

M8 x 1.25

M10 x 1.5

B10

14

18

3240

Note 1) Above figures are for the D-M9�, M9�W, M9�A, A9�.Note 2) Dimension when the rod is extended is to be added to clamp stroke plus rotary stroke.


(mm)

(mm)

MKB32MKB40MKB50MKB63

45

52

64

77

60

69

86

103

34

40

50

60

M6 x 10

M8 x 1.25

M10 x 1.5

10

14

18

5.5

5.5

6.6

9

9 depth 7

9 depth 7

11 depth 8

14 depth 10.5

M10 x 1.5

M10 x 1.5

M12 x 1.75

M12 x 1.75

12

12

15

15

14

14

19

19

4.5

5

7

7

71.5

65

76.5

80

37

29.5

34

35

7.5

8

10.5

10.5

16

16

20

20

3

3

3.5

3.5

6.5

6.5

7.5

7.5

–0.1–0.2

–0.1–0.2

–0.1–0.2

–0.1–0.2

14

14

17

17

0–0.062

0–0.062

30

30

37

48

0–0.062

0–0.062

±0.15

±0.15

20

24

30

35

±0.15

±0.15

±0.15

±0.15

7

7

8

9

±0.15

±0.15

93.5

94.5

112

115

�A B C �D M NG H I J K L O P Q R S T UV

TN— TFX Yh9 ZModel

Rc 1/8

Rc 1/8

Rc 1/4

Rc 1/4

NPT 1/8

NPT 1/8

NPT 1/4

NPT 1/4

G 1/8

G 1/8

G 1/4

G 1/4

K

L

(ø3.3)TS


R + Clamp stroke

øU

Z

øY

h9

5.5

X

Minimum lead wire bending radius 10

Auto switch

2 x V

K

CO

P

L

A

øB

I thread effective depth J

2 x 4 x øH counterbore

4 x øG through

2 x ø3.3 depth 3+0.15+0.05

DC

R + Clamp stroke(Basic)

Through-hole (Basic): MKB

Both ends tapped: MKA

1242

Series MK

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1242


GC H

+0.152 x ø6.3+0.05

F + Clamp strokeC + Clamp stroke

2 x øG

øB

A

D

F E

Model

MKG32MKG40MKG50MKG63

A8

8

9

9

B 65

72

89

108

C48

54

67

80

F5.5

5.5

6.6

9

D E GM6 x 1.0

M6 x 1.0

M8 x 1.25

M10 x 1.5

±0.1

±0.1

34

40

50

60

±0.1

±0.1

±0.15

±0.15

56

62

76

92

±0.15

±0.15

Model

MK�32-��FMK�40-��FMK� -��F

Ah90

–0.052

0–0.052

0–0.062

21

28

355063

A18

18

22

22

B67

67

88

88

C20

20

22

22

D45

45

65

65

F35.5

43

53

52.5

G

15 to 25

30 to 40

Model

MK�32-��NMK�40-��NMK�50-��NMK�63-��N

HM8 x 1.25

M8 x 1.25

M10 x 1.5

M10 x 1.5

A6

6

8

8

B14

14

18

18

C53.5

61

77

76.5

D36

36

46

46

E18

18

23

23

F 9

9

11.5

11.5

G6.2

6.2

8.2

8.2

Model

MK�32-��MMK�40-��MMK�50-��MMK�63-��M

(mm) (mm)

(mm) (mm)

Head end flange: MKG With boss on head end

With arm Rod end width across flats

4 x G (Special cap bolt)

4 x øFR + Clamp strokeE B

B D

øA

h9

D

CA

A

1243


MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1243


Rotary Clamp Cylinder: Heavy Duty Type

ø20, ø25, ø32, ø40, ø50, ø63Series MK2

MK2 10Rotary clamp cylinderHeavy duty type

Number of auto switches

R20B

NilS

2 pcs.1 pc.

F

Auto switch type


Nil Without auto switch (Built-in magnet)

Body optionNilFN

Standard (Female thread)With boss on head endWith arm



RL

Bore size202532

20 mm25 mm32 mm

405063

40 mm50 mm63 mm

Clamp strokeClamp stroke

10 mm20 mm50 mm

Applicable bore sizeø20 to ø40ø20 to ø63ø50 to ø63

Symbol102050

Mounting bracketThrough-hole/Both ends tapped common (Standard)Head end flange

BG

M9BW

M threadRc

NPTG

ø20, ø25

ø32 to ø63

Port thread type

Nil

TNTF

∗ Head end flange is equipped with a boss mounting. Be sure to specify body option “F”.


—

Relay,PLC

—

200 V100 V

100 V or less—

24 V or less—

24 V

—3-wire

(NPN equivalent)

2-wireNoYesNoYes

Yes

Connector

5 V

—12 V

5 V, 12 V12 V

5 V, 12 V—

�

��

�

��

—

———

��—

—

———

��—

—

——————

IC circuit

—

IC circuit—

IC circuit—

—

——————

A96V

A72A93VA90VA73CA80CA79W

A96

A72HA93A90———Grommet

Type Special function Electricalentry

Wiring(Output)

Load voltage

DC AC

Lead wire length (m)0.5(Nil)

3(L)

5(Z)

None(N)

Applicableload

Pre-wiredconnector

1(M)

Auto switch model

PerpendicularIn-line

ø40 to ø63ø20 to ø32

Yes

Connector


2-wire



2-wire4-wire


24 V —Relay,PLC

P4DW∗∗—

5 V,12 V

12 V

5 V,12 V12 V5 V,12 V12 V

5 V, 12 V—

��—

��

��

———

�————————

��—

��

IC circuit

—

IC circuit

—

IC circuit

—IC circuit

—

————

��——

M9NVM9PVM9BVJ79C


——

M9NM9PM9B

—M9NWM9PWM9BWM9NAM9PAM9BAF79F

How to Order



Grommet

Grommet

Grommet




Indica

tor lig

ht

Ree

d s

wit

chS

olid

sta

te s

wit

ch




∗ Since there are other applicable auto switches than listed, refer to page 1253 for details.∗ For details about auto switches with pre-wired connector, refer to pages 1784 and 1785.∗ When mounting models D-M9�(V), M9�W(V), M9�A(V), and A9�(V) with between ø32 and ø50 on sides other than the port side, please order a switch mounting bracket

separately as per the instructions on page 1252.∗ Auto switches are shipped together (not assembled).

1244

P1233-P1316-E.qxd 11/17/08 3:32 PM 44




80° to 100°(90°±10°)R type

Clamp part



Rotary Angle

Action

Rotation angle Note 1)


Rotary stroke (mm)

Clamp stroke (mm)

Theoretical clamp force (N) Note 3)

Fluid

Proof pressure



Lubrication

Piping port size

Mounting

Cushion

Stroke length tolerance

Piston speed

Non-rotating accuracy (Clamp part)

Bore size (mm)

Double acting


Air

1.5 MPa

Without auto switch: –10 to 70°C (No freezing)

With auto switch: –10 to 60°C (No freezing)

Non-lube

Through-hole/Both ends tapped common, Head end flange

Rubber bumper

50 to 200 mm/s

20 25 32 40 50 63

9.5 15 19

20, 5010, 20

100 185 300 525 825 1400

±1.2° ±0.9° ±0.7°

M5 x 0.8

+0.6–0.4

Rc1/8, NPT1/8, G1/8 Rc1/4, NPT1/4, G1/4

0.1 to 0.6 MPa

Note 4)

0.1 to 1 MPa

Note 1) Refer to “Rotary Angle” figure.Note 2) Direction of rotation viewed from the rod end when the piston rod is retracting.Note 3) At 0.5 MPa.Note 4) Operate within the pressure range of 0.1 to 0.6 MPa for ø63. When using a pressure range of 0.61 to 1.0

MPa, use the new MK series “-X2071” model. (Refer to the MK series catalog (CAT.ES20-214) for details.)

Note) Theoretical output (N) = Pressure (MPa) x Piston area (cm2) x 100 Operating directionR: Rod end (Clamp)H: Head end (Unclamp)

Bore size(mm)

20

25

32

40

50

63

Rod size(mm)

Operatingdirection

12

12

16

16

20

20

R

H

R

H

R

H

R

H

R

H

R

H

Piston area(cm2)

2

3

3.7

4.9

6

8

10.5

12.5

16.5

19.6

28

31.2

0.3

60.8

90.2

112

149

182

243

319

380

502

596

851

948

0.5

100

149

185

245

300

400

525

625

825

980

1400

1560

0.7

139

208

258

341

418

557

731

870

1149

1365

1950

2172

1.0

200

298

370

490

600

800

1050

1250

1648

1961

2801

3121


Unit: N

Theoretical Output

Clamp stroke(mm) 20

260

300

—

25295

335

—

32353

555

—

40635

680

—

50—

1170

1420

63

—

1620

1890

102050

Bore size (mm)

Unit: g


Bore size (mm)202532405063

Part no.

MK-A020

MK-A032

MK-A050

Accessories


Option/Arm

Bore size (mm)202532405063

Part no.MK2-F020MK2-F025MK2-F032MK2-F040MK2-F050MK2-F063

Accessories

Centering location ring,Set pin,Bolt for cylinderbody

Mounting Bracket/Flange

20 2

100

133

25 3

100

153

32 5

200

166

40 7

200

198

50 13

350

345

63 25

350

531

Bore size (mm)

With boss on head end

With arm

Head end flange (including mounting bolt)

Unit: g

Additional Mass

Calculation: (Example) MK2G20-10RFN• Standard calculation: MK2B20-10R• Extra mass calculation: Head end flange

With boss on head endWith arm

260 g133 g

2 g100 g495 g

1245

Specifications

Rotary Clamp Cylinder: Heavy Duty Type Series MK2

MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

198-MK.qxd 10.10.7 4:29 PM Page 3


!6

!7

!5

!8

!9

!4

No.12345

6

789101112131415

DescriptionRod coverCylinder tubePistonBushingGuide pin

Piston rod

BumperRing nutScraper pressureMagnetHexagon socket head set screwRound R-type retaining ringName plateType C retaining ringArm

MaterialAluminum alloyAluminum alloyAluminum alloy

Copper bearing materialStainless steelStainless steelCarbon steel

UrethaneCopper alloy

Stainless steel—

Chromium molybdenum steelSpring steelAluminum

Carbon tool steelRolled steel

Note

ø32 to ø63 onlyNitriding

ø20, ø25 Nitridingø32 to ø63 Heated, Nickel plated

ø20 to ø32 only

Sharp end section: 90°

ø40 to ø63 only


22

2324252627282930

DescriptionClamp boltHexagon nutHexagon socket head cap screwSpring washerCentering location ringFlangeHexagon socket head cap screwO-ringCoil scraperPiston sealGasketRod sealParallel pinWear ringBumper B

MaterialChromium molybdenum steel

Rolled steelChromium molybdenum steel

Hard steelAluminum alloy

Rolled steel

NBRPhosphor bronze

NBRNBRNBR

Stainless steelResin

Urethane

Chromiummolybdenum steel

Note

Component Parts

Qty.ø20, ø25: 2ø32 to ø63: 4

Replacement Parts: Seal Kit20 25

Not able to disassemble32 40

MK2-40-PS50

MK2-50-PS63

MK2-63-PSBore size (mm)

Kit no.Content

∗ Seal kit includes @3 to @7. Order the seal kit, based on each bore size.∗ Since the seal kit does not include a grease pack, order it separately.

Grease pack part no.: GR-S-010 (10g)

Set of nos. above @3 @4 @5 @6 @7

MK2�20, 25 With arm (N)

MK2�32 With boss on head end (F)

MK2�40 to 63 Head end flange (G)

Construction

y !2 @4 o @7 r i !1 t q @6 u !0 @5 w e

@3

!3 @9 #0

@0

@1 @2

@8

1246

Series MK2

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1246


Arm

Wrench

Hexagon wrenchkey


Clamp Arm Mounting1. Use a clamp arm that is available as an option.

To fabricate a clamp arm, make sure that the allowable bending moment and the inertial moment will be within the specified range.If a clamp arm that exceeds the specified value is installed, the internal mechanism in the cylinder could become damaged.

Caution





Mounting Bolt for MK2BMounting: Mounting bolt for through-hole type is available.Ordering: Add the word “MK2B” to the mounting bolt size.Example) M5 x 75 L (MK2B)

When arms are to be made separately, their length and mass should be within the following range.



Graph (1)

Graph (2)

When arm length is 8 cm, pressure should be less thanMK2�20/25: 0.45 MPaMK2�32/40: 0.55 MPa.Note) Operate within the pressure range of

0.1 to 0.6 MPa for ø63. When using a pressure range of 0.61 to 1.0 MPa, use the new MK series “-X2071” model. (Refer to the MK series catalog (CAT.ES20-214) for details.)

When arm’s moment of inertia is 5 x 10–3 kg·m2, cylinder speed should be less thanMK2�32/40: 66 mm/sMK2�50/63: 120 mm/s.For calculating moment of inertia, refer to pages 1234, 1235 and 1264.Note) Maximum piston speed is equivalent to



Cylinder model C

8.5

10.5

10

6

10.510.5

9

D 75 85 80 90 90100 80 90105135105135

Mounting bolt sizeM5 x 75 LM5 x 85 LM5 x 80 LM5 x 90 LM5 x 90 LM5 x 100 LM5 x 80 LM5 x 90 LM6 x 105 LM6 x 135 LM8 x 105 LM8 x 135 L

MK2B20-10MK2B20-20MK2B25-10MK2B25-20MK2B32-10MK2B32-20MK2B40-10MK2B40-20MK2B50-20MK2B50-50MK2B63-20MK2B63-50

l

Note) Be sure to use a flat washer to mount cylinders via through-holes.


10–4

10–3

10–2

2

4

6

2

4

6

2

3 MK2�50/63

MK2�32/40

MK2�20/25

Mom

ent o

f ine

rtia

(kg

·m2 )

50 100 20066 120

Bore size (mm)20, 2532, 4050, 63

Proper tightening torque4 to 6

8 to 1014 to 16

(N·m)

PrecautionsBe sure to read before handling.Refer to front matters 42 and 43 for Safety Instructions and pages 3 to 11 for Actua-tor and Auto Switch Precautions.

Mounting bolt

Flatwasher

Operatingrange

Operating pressure (MPa)0.1 0.2 0.4 0.6 1

0.45 0.55

2

4

6

8

10

20MK2�50/63

MK2�32/40

MK2�20/25

Arm

leng

th l

(cm

)

Note)

Operatingrange

1247


MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

198-MK.qxd 10.10.7 4:29 PM Page 4


F

G

L

3

I + 2 x Clamp stroke

4

3 5.5(ø5.

5)

J + Clamp stroke

K

17

øH

h9

ø12

M6 x 1

2 x M5 x 0.8

D E25

F

�A

G

BC

–0.1�10–0.2

2 x ø5.5 through2 x 2 x ø9 counterbore depth 7

M8 x 1.25Effective thread depth 11

Dimensions: ø20, ø25

Through-hole/Both Ends Tapped Common (Standard)

Note) Dimension when the rod is extended is to be added to clamp stroke plus rotary stroke.

(mm)

Model

MK2B20MK2B25

�A36

40

B46.8

52

C36

40

D49

54.5

E25.5

28.5

I75.5

78.5

J62.5

65.5

K31

32

L4

5

F G±0.15

±0.15

13.5

16

±0.15

±0.15

7.5

8

øHh90

–0.052

0–0.052

20

23

Head End FlangeModel

MK2G20MK2G25

A60

64

B39

42

C D±0.1

±0.1

25.5

28

±0.15

±0.15

48

52

(mm)

With Boss on Head End

Model

MK2�20-��FMK2�25-��F

øAh90

–0.043

0–0.043

13

15

(mm)

12 to 22

2 x M6 x 1 (Special cap bolt)

+0.152 x ø6.3+0.05

2 x ø6.6

M6 x 1.0

24.5 + Clamp stroke

J + Clamp stroke

With arm

CB

D A

øA

h9

2 x ø3.3 depth 3+0.15+0.05

1248

Series MK2

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1248


Note) The below figures illustrate auto switches D-M9�, M9�W, M9�A, and A9�.

Through-hole/Both Ends Tapped Common (Standard)

Note 1) The cylinder rod is retracted.Note 2) Rotary direction is viewed from the rod end when the piston rod is retracting.Note 3) Dimension when the rod is extended is to be added to clamp stroke plus rotary stroke.

(mm)

MK2B32MK2B40MK2B50MK2B63

45

52

64

77

60

69

86

103

34

40

50

60

54

61

73

86

31.5

35

41

47.5

5.5

5.5

6.6

9

12

12

15

15

9 depth 7

9 depth 7

11 depth 8

14 depth 10.5

14

14

17

17

–0.1–0.2

–0.1–0.2

–0.1–0.2

–0.1–0.2

M10 x 1.5

M10 x 1.5

M12 x 1.75

M12 x 1.75

M6 x 1.0

M6 x 1.0

M8 x 1.25

M10 x 1.5

±0.15

±0.15

±0.15

±0.15

20

24

30

35

±0.15

±0.15

±0.15

±0.15

7

7

8

9

17

17

22

28.5

14

14

19

19

4.5

5

7

7

101.5

102.5

122

125

76

70

81.5

85

37

29.5

34

35

7.5

8

10.5

10.5

16

16

20

20

30

30

37

48

0–0.062

0–0.062

0–0.062

0–0.062

3

3

3.5

3.5

6.5

6.5

7.5

7.5

Rc 1/8

Rc 1/8

Rc 1/4

Rc 1/4

NPT 1/8

NPT 1/8

NPT 1/4

NPT 1/4

G 1/8

G 1/8

G 1/4

G 1/4

Model �A B C E F øG JøH�D I MK L N O P Q R S T øU X øYh9 ZV

TN TF—

With Arm (mm)

Model

MK2�32-��NMK2�40-��NMK2�50-��NMK2�63-��N

GA18

18

22

22

B67

67

88

88

C20

20

22

22

D45

45

65

65

E39

46

58

57.5

F

15 to 25

30 to 40

Head End Flange (mm)

Model

MK2G32MK2G40MK2G50MK2G63

A8

8

9

9

øF5.5

5.5

6.6

9

GM8 x 1.25

M8 x 1.25

M10 x 1.5

M10 x 1.5

M6 x 1.0

M6 x 1.0

M8 x 1.25

M10 x 1.5

B 65

72

89

108

C48

54

67

80

D E±0.1

±0.1

34

40

50

60

±0.1

±0.1

±0.15

±0.15

56

62

76

92

±0.15

±0.15

(mm)

Model

MK2�32-��FMK2�40-��FMK2� -��F

øAh90

–0.052

0–0.052

0–0.062

21

28

35

CO

P

L

D

K

A

C

øB

K

L

2 x 4 x N

Z X


S T

R + Clamp stroke

øY

h9

øU

5.5

2 x 4 x øHcounterbore

4 x øG through

I thread length J

2 x ø3.3 depth 3+0.15+0.05

(ø3.3)

Minimum bending radius of lead wire 10

Auto switch2 x 4 x M

2 x V


4 x G (Special cap bolt)

4 x øF

+0.152 x ø6.3+0.05

DC

CG F

E B

B D

R + Clamp stroke A

A

E + Clamp stroke

5063

With Boss on Head End

øA

h9

1249


MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1249


≅≅

Auto Switch Proper Mounting Position (Detection at Stroke End) and its Mounting Height

ø12 ø16

a) b)

When mounted

a) b)

When mounted

D-M9�VD-M9�WVD-M9�AVLD-A9�V

D-M9�D-M9�WD-M9�ALD-A9�

Note 1) ( ): D-A93Note 2) Size W is suitable for mounting models D-M9�, D-M9�W, D-M9�AL, and D-A9�.Note 3) When setting an auto switch, confirm the operation and adjust its mounting position.

Applicable Cylinders: Series MK

Auto Switch Mounting Height (mm)

12

16

D-A9�VD-M9�VD-M9�WVD-M9�AVL

Bore size

Auto switchmodel

Hs19

21

Hs17

19

Auto Switch Proper Mounting Position (mm)

12

16

BA W

1.5 (4)

2 (4.5)

BA W

0

0

7.5

8

4.5

4

11.5

12

5.5

6

D-A9�D-A9�V

Bore size

Auto switchmodel

D-M9�/M9�VD-M9�W/M9�WVD-M9�AL/M9�AVL

1250

Series MK/MK2

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1250


BA

ø20, ø25D-M9�D-M9�VD-M9�WD-M9�WVD-M9�ALD-M9�AVLD-A9�D-A9�V

ø32 to ø63 ø20, ø25 ø32 to ø63

Auto switchmodel

Bore size

3.5

4.5

10

3.5

5

10

4

6.5

9.5

4

5.5

9.5

4

6.5

9.5

5

6.5

11.5

20 25 32 40 50 63

D-A9�/A9�V

D-M9�/M9�VD-M9�W/M9�WVD-M9�AL/M9�AVL

(mm)

∗ Since this is a guideline in-cluding hysteresis, not meant to be guaranteed. (Assuming approximately ±30% dispersion.) There may be the case it will vary substantially de-pending on an ambient en-vironment.

∗ Figures for models D-M9�(V), M9�W(V), M9�A(V)L, and A9�(V) with ø12 or ø16 (MK), or ø32 or more (MK, MK2) indicate the operating range when using the existing auto switch-mounting groove, without using auto switch mounting bracket BQ2-012.

Operating Range

5.5 5 6 6 6 6.5

D-F7�/J79D-F7�V/J79CD-F7�W/F7�WVD-J79WD-F79F/F7BALD-F7BAVL/F7NTL

— — — 5 5 5 D-P4DWL

12 12 12 11 10 12

13 13 13 14 14 16

D-A7�/A80D-A7H/A80HD-A73C/A80CD-A79W

Auto switchmodel

Bore size

2

3.5

6

2.5

4

7.5

3.5

5

10

3.5

6

10

4

5.5

9.5

4

5

9.5

4

6

9.5

5

6.5

11.5

12 16 20 25 32 40 50 63

D-M9�W/M9�WVD-M9�AL/M9�AVLD-A9�/A9�V

D-M9�/M9�V

(mm)

— — 5.5 5 6 6 6 6.5

D-F7�/J79D-F7�V/J79CD-F7�W/F7�WVD-J79WD-F79F/F7BALD-F7BAVL/F7NTL

— — — — — 5 5 5 D-P4DWL

— — 12 12 12 11 10 12

— — 13 13 13 14 14 16

D-A7�/A80D-A7H/A80HD-A73C/A80CD-A79W

D-F7�/J79D-F7�VD-J79CD-F7�W/J79WD-F7�WVD-F7BAL/F7BAVLD-F79F/F7NTLD-A7�/A80D-A73C/A80CD-A7�H/A80HD-A79WD-P4DWL

MK MK2

Auto Switch Proper Mounting Position (Detection at Stroke End) and its Mounting Height

Applicable Cylinders: Series MK, MK2

Auto Switch Proper Mounting PositionApplicable Cylinders: Series MK

Note) When setting an auto switch, confirm the operation and adjust its mounting position.

D-A73D-A80

A26

26.5

31.5

22.5

27

27.5

B 3.5

4

5

7.5

10.5

13.5

A30

30.5

35.5

26.5

31

31.5

B 7.5

8

9

11.5

14.5

17.5

D-A72/A7�HD-A80H/A73CD-A80C/F7�/F79FD-J79/F7�V/J79CD-F7BA�/F7�WD-J79W/F7�WV

D-A79WD-A9�D-A9�V

D-M9�D-M9�VD-M9�WVD-M9�WD-M9�ALD-M9�AVL

D-P4DWL

Auto switchmodel

20

25

32

40

50

63

A—

—

—

19.5

24

24.5

B—

—

—

4.5

7.5

10.5

A26

26.5

30

21

25.5

26

B 3.5

4

3.5

6

9

12

A29

29.5

33

24

28.5

29

A34

34.5

38

29

33.5

34

B 6.5

7

6.5

9

12

15

B11.5

12

11.5

14

17

20

A28.5

29

32.5

23.5

28

28.5

B6

6.5

6

8.5

11.5

14.5

Bore size

D-F7NTL

Auto Switch Proper Mounting PositionApplicable Cylinders: Series MK2

Note) When setting an auto switch, confirm the operation and adjust its mounting position.

D-A73D-A80

A30

31

36

27

31

31.5

B8

10

13

16

19.5

22.5

D-A79WD-F7NTLD-A9�D-A9�V

D-M9�D-M9�VD-M9�WD-M9�WVD-M9�ALD-M9�AVL

D-P4DWL

Auto switchmodel

20

25

32

40

50

63

A—

—

—

20

24

24.5

B—

—

—

9

12.5

15.5

A26

27

30.5

21.5

25.5

26

B4

6

7.5

10.5

14

17

A29

30

33.5

24.5

28.5

29

A34

34.5

38

29

33.5

34

B7

9

10.5

13.5

17

20

B12

14

15.5

18.5

22

25

A28.5

29.5

33

24

28

28.5

B 6.5

8.5

10

13

16.5

19.5

Bore size

D-A72/A7�HD-A80H/A73CD-A80C/F7�/F79FD-J79/F7�V/J79CD-F7BA�/F7�WD-J79W/F7�WV

A26

27

32

23

27

27.5

B4

6

9

12

15.5

18.5

1251

Rotary Clamp Cylinder Series MK/MK2

MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1251


[Mounting screws set made of stainless steel]The set of stainless steel mounting screws (with nuts) described below is available and can be used depending on the operating environment. (Please order the auto switch spacer BQ-2, since it is not included.)The “D-F7BAL/F7BAVL” switch is set on the cylinder with the stainless steel screws above when shipped.When only a switch is shipped independently, “BBA2” screw set is attached.

Bore size (mm)Auto switch model

20 25 32 40 50 63D-F7�/J79D-F7�VD-J79CD-F7�W/J79WD-F7�WVD-F7BAL/F7BAVLD-F79F/F7NTLD-A7�/A80D-A73C/A80CD-A7�H/A80HD-A79WD-P4DWL

BQ-1

— BQP1-050

BQ-2

Note 1) For ø32 to ø50 of each cylinder series, when mounting compact auto switches on one of the three sides other than the port side (above A, B, C side) in the figure above, a separate auto switch mounting bracket is necessary as shown in the table above, so please order one separately from the cylinder.(The same is true when mounting compact auto switches with the auto switch mounting rail, not using the compact auto switch mounting groove, for diameters ø63 to ø100.)Example MKA32-10R-M9BW ····· 1 unit BQ-2 ····· 2 pcs. BQ2-012 ····· 2 pcs.

Note 2) When the cylinder is shipped, an auto switch mounting bracket and auto switch are included in the shipment.

Set screw (not used)


D-M9�D-M9�VD-M9�WD-M9�WVD-M9�ALD-M9�AVLD-A9�D-A9�V

Auto switchmounting

surface

Auto switchmodel

Bore size (mm)

Auto switch mounting surface

Port side

qBQ-2wBQ2-012Two types of auto switch mounting bracket are used as a set.

No auto switch mountingbracket necessary.


No autoswitchmountingbracketnecessary.

A, B, C side


Only on auto switch mounting rail side


A, B, C side


Port, A, B, C side


ø12, ø16 ø20, ø25 ø32, ø40, ø50 ø63Port side

B

C A

q

w

q

w

C

B

A

Port side

A

B

C

Port side

Note 4) When mounting D-M9�A(V)L anywhere other than the port side of ø32, ø40, ø50, please order auto switch mounting brackets BQ2-012S, BQ-2, and the stainless steel screw set BBA2 separately.

Auto Switch Mounting Bracket/Part No.

Note 3) When the cylinder is shipped, an auto switch mounting bracket and auto switch are included in the shipment. However, ø40 to ø63 with the D-P4DWL are assembled at the time of shipment.

Auto Switch Mounting Bracket Mass

Mass (g)

1.5

1.5

5

16

Mounting bracket part no.

BQ-1

BQ-2

BQ2-012

BQP1-050

Auto switch mounting screw

Auto switch mounting nut (Square nut)

Auto switch mounting nut (Convex type)

M3 x 0.5 x 8 l

M3 x 0.5 x 10 l

M3 x 0.5

M3 x 0.5

1

1

1

1

BQ-1

BQ-2

BQ-1

BQ-2

D-A7D-A8D-F7D-J7

Note 5) When using BQ-1, BBA2 may be used by itself.When using BQ-2, BQ-2 and BBA2 should be used together as a set, and used in combination with the auto switch spacer (black resin material) and stainless steel screws.

Detailed Contents of Stainless Steel Mounting Screw Set

Partno.

BBA2

Applicable autoswitch mountingbracket part no.

Applicableauto switch

Content

Description Size Qty.

1252

Series MK/MK2

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1252


∗ With pre-wired connector is available for solid state auto switches, too. For details, refer to pages 1784 and 1785.∗ Normally closed (NC = b contact), solid state auto switch (D-F9G/F9H type) are also available. For details, refer to page 1746.

Auto switch type Model FeaturesElectrical entry

D-F7NV, F7PV, F7BV

D-F7NWV, F7BWV

D-F7BAVL

D-F79, F7P, J79

D-F79W, F7PW, J79W

D-F7BAL

D-F7NTL

D-P5DWL

D-A73

D-A80

D-A73H, A76H

D-A80H

—

Diagnostic indication (2-color indication)

Water resistant

—

Diagnostic indication (2-color indication)

Water resistant (2-color indication)

With timer

Magnetic field resistant

—

Without indicator light

—

Without indicator light

Applicable bore size

ø20 to ø63

ø40 to ø63

ø20 to ø63

Grommet (Perpendicular)

Grommet (In-line)


Grommet (In-line)

Reed

Solid state

Other than the models listed in “How to Order”, the following auto switches are applicable.For detailed specifications, refer to pages 1719 to 1827.

1253

Rotary Clamp Cylinder Series MK/MK2

MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1253


Rotary Clamp Cylinder: Double Guide Type

ø20, ø25, ø32, ø40, ø50, ø63Series MK2T

∗ Since there are other applicable auto switches than listed, refer to page 1260 for details.∗ For details about auto switches with pre-wired connector, refer to pages 1784 and 1785.∗ When D-M9�(V)/M9�W(V)/M9�A(V)/A9�(V) types with ø32 to ø50 are mounted on a side other than the port side, order auto switch mounting brackets separately. Refer to

page 1261 for details.∗ Auto switches are shipped together (not assembled).





How to Order

MK2T 10Rotary clamp cylinderDouble guide type Number of auto switches

R20B

NilS

2 pcs.1 pc.

N

Auto switch type


∗ Arms are included when shipped, (but not assembled).

∗ Mounting bracket is included, (but not assembled). Nil Without auto switch (Built-in magnet)

Body optionNilN

Standard (Female thread)With arm


Bore size202532

20 mm25 mm32 mm

405063

40 mm50 mm63 mm

Clamp strokeClamp stroke

10 mm20 mm50 mm

Applicable bore sizeø20 to ø40ø20 to ø63ø50 to ø63

Symbol102050

Mounting bracketThrough-hole/Both ends tapped common (Standard)Head end flange

BG

M9BW

M threadRc

NPTG

ø20, ø25

ø32 to ø63

Cylinder port

Nil

TNTF

Made to Order(Refer to page 1255.)


RL

Type Special functionElectrical

entryWiring

(Output)

Load voltage

DC AC

Lead wire length (m)0.5(Nil)

3(L)

5(Z)

None(N)

Applicableload

Pre-wiredconnector

1(M)

Auto switch model

Perpendicular In-lineø32 to ø63ø20, ø25ø32 to ø63ø20, ø25

NoYesNoYes

YesGrommet

Connector

Grommet

—

200 V100 V

100 V or less—

24 V or less—

3-wire(NPN equivalent)

2-wire24 V

——

Relay,PLC

5 V

—12 V

5 V, 12 V12 V

5 V, 12 V—

�

��

�

��

—

———

��—

—

———

��—

—

——————

IC circuit

—

IC circuit—

IC circuit—

—

——————Diagnostic indication

(2-color indication)

A96V

A93VA90V

A96

A93A90———

—

———

A72

A73CA80CA79W

A72H

5 V,12 V

12 V

5 V,12 V12 V5 V,12 V12 V

5 V, 12 V—

��—

��

��

———

�————————

��—

��

IC circuit

—

IC circuit

—

IC circuit

—IC circuit

—

————

��——





M9NVM9PVM9BV


——

M9NM9PM9B

—M9NWM9PWM9BWM9NAM9PAM9BA

J79C

F79FP4DW∗∗

——

—

Yes

Connector

Grommet

Grommet


2-wire



2-wire4-wire


24 V —Relay,PLC

—

Indic

ator

light

Ree

d s

wit

chS

olid

sta

te s

wit

ch

1254

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1254


Rotary Clamp Cylinder: Double Guide Type Series MK2T



85° to 95°(90°±5°)R type

Clamp part



Bore size (mm)202532405063

Accessories

Hexagon sockethead cap screw

Mounting Bracket/Flange

Bore size (mm)202532405063

CQS-F020CQS-F025MK2T-F032MK2T-F040MK2T-F050MK2T-F063

MK-A020

MK-A032

MK-A050MK2T-A063

Accessories


Option/Arm

Action

Rotation angle Note 1)


Rotary stroke (mm)

Clamp stroke (mm)

Theoretical clamp force (N) Note 3)

Fluid

Proof pressure



Lubrication

Piping port size

Mounting

Cushion

Stroke length tolerance

Piston speed

Non-rotating accuracy (Clamp part)

Bore size (mm)

Double acting


Air

1.5 MPa

0.1 to 1 MPa

Without auto switch: –10 to 70°C (No freezing)

With auto switch: –10 to 60°C (No freezing)

Non-lube

Through-hole/Both ends tapped common, Head end flange

Rubber bumper

50 to 200 mm/s

20 25 32 40 50 63

19 3329

20, 5010, 20

100 185 300 525 825 1300

±1.0° ±0.5°

M5 x 0.8

+1.00

Rc1/8, NPT1/8, G1/8 Rc1/4, NPT1/4, G1/4

Note 1) Refer to “Rotary Angle” figure.Note 2) Direction of rotation viewed from the rod end when the piston rod is retracting.Note 3) At 0.5 MPa.

Specifications

Bore size(mm)

20

25

32

40

50

63

Rod size(mm)

Operatingdirection

12

12

16

16

20

25

R

H

R

H

R

H

R

H

R

H

R

H

Piston area(cm2)

2

3

3.7

4.9

6

8

10.5

12.5

16.5

19.6

26

31.2

0.3

60.8

90.2

112

149

182

243

319

380

502

596

780

948

0.5

100

149

185

245

300

400

525

625

825

980

1300

1560

0.7

139

208

258

341

418

557

731

870

1149

1365

1820

2172

1.0

200

298

370

490

600

800

1050

1250

1648

1961

2600

3121


Unit: N

Theoretical Output

Clamp stroke(mm) 20

367

433

—

25448

520

—

32806

914

—

401008

1127

—

50—

2049

2672

63—

2609

3354

102050

Bore size (mm)

Unit: g


20100

133

25100

153

32200

166

40 200

198

50350

345

63600

531

Bore size (mm)

With arm

Head end flange (including mounting bolt)

Unit: g

Additional Mass

X1859 With head end pin holeSymbol Description

Made to Order(For details, refer to page 2021.)

Rotary Angle

Note) Theoretical output (N) = Pressure (MPa) x Piston area (cm2) x 100 Operating directionR: Rod end (Clamp)H: Head end (Unclamp)

Calculation: (Example) MK2TG20-10RN• Standard calculation: MK2TB20-10R• Extra mass calculation: Head end flange

With arm

367 g133 g100 g600 g

Part no.

Part no.

1255

MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1255


No.123

4

5

6

7

8

9101112

DescriptionRod coverCylinder tubePiston

Bushing

Guide shaft

Guide roller

Retaining ring

Piston rod

BumperSeal retainerMagnetKey

MaterialStructural steelAluminum alloyAluminum alloy

Oil-impregnated sintered alloyBronze castedStainless steelStructural steelStructural steel

Steel for special applications

Stainless steelStructural steel

UrethaneAluminum alloy

—Structural steel

Note

ø20, 25ø32 to 63ø20, 25

ø32 to 63

ø20, 25ø32 to 63ø20, 25

ø32 to 63


26

DescriptionArmClamp boltHexagon nutHexagon socket head cap screwSpring washerFlangeGasketCoil scraperPiston sealRod sealWear ringBottom plateRetaining ringHexagon socket head cap screw (with SW)WasherHexagon socket head cap screw

MaterialStructural steelStructural steelStructural steelStructural steel

Steel wireStructural steel

NBRBronzeNBRNBRResin

Aluminum alloySteel for special applications

Note

Structural steel

Stainless steelStructural steel

ø25, ø32 only

Component Parts

Replacement Parts: Seal Kit20

MK2T20-PS25

MK2T25-PS32

MK2T32-PS40

MK2T40-PS50

MK2T50-PS63

MK2T63-PSBore size (mm)

Kit no.Content

∗ Seal kit includes !9, @0, @1, @2. Order the seal kit, based on each bore size.

Set of nos. above !99 @0 @1 @2

MK2T�20 to 63

In case of clamp stroke 50 mm

Head end flange (G)With arm (N)

!8

!6

@4!9 @5

!4

!5

!3

!7

!6

oe@3@1!1otyuwqr!9@2@5

@6

!0!2@0i

Construction

1256

Series MK2T

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1256


Arm

Wrench

Mounting bolt

Flatwasher

Hexagonwrenchkey

Operating pressure (MPa)0.1 0.2 0.4 0.6 1

0.45 0.55 0.8

2

4

6

8

10

20MK2T�50/63

MK2T�32/40

MK2T�20/25

Operatingrange

Arm

leng

th l

(cm

)


Mounting: Mounting bolt for through-hole type is available.Ordering: Add the word “MK2TB” to the mounting bolt size.Example) M5 x 115 L (MK2TB) 4 pcs.

Mounting Bolt for MK2TB

When arms are to be made separately, their length and weight should be within the following range.



Graph (1)

When arm length is 8 cm, pressure should be less thanMK2T�20/25: 0.45 MPaMK2T�32/40: 0.55 MPaMK2T�50/63: 0.8 MPa.

When arm’s moment of inertia is 1 x 10–2 kg·m2, cylinder speed should be less thanMK2T�32/40: 85 mm/sMK2T�50/63: 140 mm/s.For calculating moment of inertia, refer to pages 1234, 1235 and 1264.Note) Maximum piston speed is equivalent to



Cylinder model C11 11 8.5 8.511.511.5 7.5 7.513.510 13 14

D115135115135145165145165185245185250

Mounting bolt sizeM5 x 115 LM5 x 135 LM5 x 115 LM5 x 135 LM5 x 145 LM5 x 165 LM5 x 145 LM5 x 165 LM6 x 185 LM6 x 245 LM8 x 185 LM8 x 250 L

MK2TB20-10MK2TB20-20MK2TB25-10MK2TB25-20MK2TB32-10MK2TB32-20MK2TB40-10MK2TB40-20MK2TB50-20MK2TB50-50MK2TB63-20MK2TB63-50

l

Bore size (mm)20, 2532, 40

5063

Proper tightening torque4 to 6

8 to 1014 to 16

106 to 127

(N·m)

Graph (2)


10–4

10–3

10–2

10–1

Mom

ent o

f ine

rtia

(kg

·m2

)

50 100 20014085

MK2T�50/63

MK2T�32/40

MK2T�20/25

Operatingrange

Precautions

Clamp Arm Mounting1. Use a clamp arm that is available as an option.

To fabricate a clamp arm, make sure that the allowable bending moment and the inertial moment will be within the specified range.If a clamp arm that exceeds the specified value is installed, the internal mechanism in the cylinder could become damaged.

Caution





Be sure to read before handling.Refer to front matters 42 and 43 for Safety Instructions and pages 3 to 11 for Actua-tor and Auto Switch Precautions.

Note) Be sure to use a flat washer to mount cylinders via through-holes.

1257


MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1257


Dimensions: ø20, ø25

Head End FlangeModel

MK2TG20MK2TG25

A60

64

B39

42

C48

52

(mm)

Through-hole/Both Ends Tapped Common (Standard) (mm)

Clamp stroke 20 mmClamp stroke 10 mmBore size

36

40

47

52

25.5

28

116.5

119

110.5

113

59

59

A øB CQ R S

136.5

139

130.5

133

69

69

Q R S2025

17.5

14

51 357

1611 to 22

M6 x 1.0

ø12

4.5

QR

5.5S

1717

2 x M5 x 0.8

2 x 4 x M6 x 1.0

AC

10 –0.07–0.15

10–0

.07

–0.1

5

øB

CA

M8 x 1.25Thread length 11 4 x ø5.4 through

2 x 4 x ø9 counterbore depth 7

C

8 BA

2 x ø6.6

1258

Series MK2T

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1258


BE

DC

A

4 x øF

F

EA

B D10

C G

K

QR

ST

NN

øU

2 x 4 x M thread 2 x V

A C D

øB

O

PACD

4 x øG through

2 x 4 x øH counterbore depth

I thread length J


With Arm (mm)

GM8 x 1.25

M8 x 1.25

M10 x 1.5

M10 x 1.5

A18

18

22

32

B67

67

88

91

C20

20

22

32

D45

45

65

65

E21.5

21

29.5

34.5

F15 to 25

15 to 25

20 to 40

20 to 40

Head End Flange (mm)

Model

MK2TG32MK2TG40MK2TG50MK2TG63

A8

8

9

9

øF5.5

5.5

6.6

9

B 65

72

89

108

C48

54

67

80

D E34

40

50

60

56

62

76

92

Model

MK2T�32�-��NMK2T�40�-��NMK2T�50�-��NMK2T�63�-��N

Through-hole/Both Ends Tapped Common (Standard) (mm)

45

52

64

77

60

69

86

103

34

40

50

60

5.5

5.5

6.6

9

9 depth 7

9 depth 7

11 depth 8

14 depth 10.5

M10 x 1.5

M10 x 1.5

M12 x 1.75

M16 x 2

M6 x 1.0

M6 x 1.0

M8 x 1.25

M10 x 1.5

12

12

15

21

N

14

14

19

19

17

17

22

28.5

4.5

5

7

7

16

16

20

25

Rc 1/8

Rc 1/8

Rc 1/4

Rc 1/4

NPT 1/8

NPT 1/8

NPT 1/4

NPT 1/4

G 1/8

G 1/8

G 1/4

G 1/4

Nil TN TFV

A øB C D G H I J

6

6

7

8

K M

14

14

17

22 –0.07–0.15

–0.07–0.15

–0.07–0.15

–0.07–0.1532

405063

Bore size O P øU

148

151.5

—

—

140

144

—

—

74

75

—

—

7.5

8

—

—

Q R S T168

171.5

191

192

160

164

179

182

84

85

91.5

93

7.5

8

12.5

10.5

Q R S T—

—

254.5

256

—

—

242.5

246

—

—

121.5

123

—

—

14

15

Q R S T32405063

Bore sizeClamp stroke 50 mmClamp stroke 20 mmClamp stroke 10 mm

1259


MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1259


Operating Range (Dimensions) (mm)

Operating Range

D-A7�/A80D-A7H/A80HD-A73C/A80C

Auto switch modelBore size

20

5.5 5.5 6.5 5.5 6.5 6.5

3 3.5 4.5 4.5 5 5

— — 6 6 6 6.5

25 32 40 50 63

D-F7�/J79D-F7�V/F79F/J79CD-F7�W/F7�WVD-F79F/F7BAL/F7BAVL/F7NTL

D-M9�W/M9�WVD-M9�AL/M9�AVL

D-M9�/M9�V

—

——

—

——

9.5

6 —

11.5

7 5

11

7 5

13.5

9.5 5

D-A79WD-P4DWL

9 9.5 9 9.5 9.5 11 D-A9�/A9�V

∗ Since this is a guideline including hysteresis, not meant to be guaranteed. (Assuming approximately ±30% dispersion.) There may be the case it will vary substantially depending on an ambient en-vironment.

∗ Figures for models D-M9�(V), M9�W(V), M9�A(V)L, and A9�(V) with ø32 or more indicate the operating range when using the existing auto switch-mounting groove, without using auto switch mounting bracket (BQ2-012).

Other than the models listed in “How to Order”, the following auto switches are applicable.For detailed specifications, refer to pages 1719 to 1827.

Auto switch type Model FeaturesElectrical entryD-F7NV, F7PV, F7BVD-F7NWV, F7BWVD-F7BAVLD-F79, F7P, J79D-F79W, F7PW, J79WD-F7BALD-F7NTLD-P5DWLD-A73D-A80D-A73H, A76HD-A80H

—Diagnostic indication (2-color indication)

Water resistant—

Diagnostic indication (2-color indication)Water resistant (2-color indication)

With timerMagnetic field resistant

—Without indicator light

—Without indicator light

Applicable bore size

ø20 to ø63

ø40 to ø63

ø20 to ø63


Grommet (In-line)


Grommet (In-line)Reed

Solid state

∗ With pre-wired connector is available for solid state auto switches, too. For details, refer to pages 1784 and 1785.∗ Normally closed (NC = b contact), solid state auto switch (D-F9G/F9H type) are also available. For details, refer to page 1746.

ø20 to ø63 ø32 to ø63B

A

Auto switch (Rail mounting)B

A

Auto switch (Direct mounting)D-M9�D-M9�VD-M9�WD-M9�WVD-M9�ALD-M9�AVLD-A9�D-A9�V

Mounting Rail mounting Direct mounting

Model

MK2T20MK2T25MK2T32MK2T40MK2T50-20stMK2T50-50stMK2T63-20stMK2T63-50st

D-A7D-A8

A——

73 (73.5)74 (74.5)89.5 (90)

119.5 (120)91.5 (92)

121.5 (122)

B——

10.5 (11)13 (13.5)18.5 (19)22 (22.5)19.5 (20)23.5 (24)

A——

73.5 74.590

120 92

122

B——

11 13.519 22.520 24

A——

70.5 71.5

87 117

89 119

B——8

10.516 19.517 21

A———70

85.5115.5 87.5117.5

B———9

14.518 15.519.5

A 60.5

61 76 77

92.5122.5 94.5124.5

B9

11 13.516 21.525 22.526.5

A 56.5

57 72 73

88.5118.5 90.5120.5

B5 7

9.512 17.521 18.522.5

A63

63.5 78.5 79.595

125 97

127

B11.513.516 18.524 27.525 29

D-A7�H/A80HD-A73C/A80CD-F7�/F79F/J79D-F7�V/J79CD-F7BA�/F7�WD-J79W/F7�WV

D-A79W D-P4DWL D-A9�D-A9�V

D-M9�D-M9�VD-M9�WD-M9�WVD-M9�ALD-M9�AVL

D-F7NTL

∗ ( ): D-A72Note) When setting an auto switch, confirm the operation and adjust its mounting position.

Auto Switch Proper Mounting Position (Detection at Stroke End)

D-F7�/J79D-F7�VD-J79CD-F7�W/J79WD-F7�WVD-F7BAL/F7BAVLD-F79F/F7NTLD-A7�/A80D-A73C/A80CD-A7�H/A80HD-A79WD-P4DWL

1260

Series MK2T

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1260


Auto Switch Mounting Bracket Mass

Mass (g)

1.5

1.5

5

16

Mounting bracket part no.

BQ-1

BQ-2

BQ2-012

BQP1-050

Bore size (mm)Auto switch model

32 40 50 63D-F7�/J79D-F7�VD-J79CD-F7�W/J79WD-F7�WVD-F7BAL/F7BAVLD-F79F/F7NTLD-A7�/A80D-A73C/A80CD-A7�H/A80HD-A79WD-P4DWL — BQP1-050

BQ-2

Note 1) For ø32 to ø50 of each cylinder series, when mounting compact auto switches on one of the three sides other than the port side (above A, B, C side) in the figure above, a separate auto switch mounting bracket is necessary as shown in the table above, so please order one separately from the cylinder.(The same is true when mounting compact auto switches with the auto switch mounting rail, not using the compact auto switch mounting groove, for diameters ø63.)Example MK2TB32-10R-M9BW ····· 1 unit BQ-2 ····· 2 pcs. BQ2-012 ····· 2 pcs.

Note 2) When the cylinder is shipped, an auto switch mounting bracket and auto switch are included in the shipment.

D-M9�D-M9�VD-M9�WD-M9�WVD-M9�ALD-M9�AVLD-A9�D-A9�V

Auto switchmounting

surface

Auto switchmodel

Bore size (mm)


Port side





A, B, C sides


Port, A, B, C sides


Port, A, B, C sides

ø20, ø25 ø32, ø40, ø50 ø63

A

B

C

Port side

C

B

A

Port side


q

w

Port side

B

C A

Auto Switch Mounting Bracket/Part No.

Note 3) When the cylinder is shipped, an auto switch mounting bracket and auto switch are included in the shipment. However, ø40 to ø63 with the D-P4DWL are assembled at the time of shipment.

Note 4) When mounting D-M9�A(V)L anywhere other than the port side of ø32, ø40, ø50, please order auto switch mounting brackets BQ2-012S, BQ-2, and the stainless steel screw set BBA2 separately.

[Mounting screw set made of stainless steel]The set of stainless steel mounting screws (with nuts) described below is available and can be used depending on the operating environment. (Please order the auto switch spacer BQ-2, since it is not included.)The “D-F7BAL/F7BAVL” switch is set on the cylinder with the stainless steel screws above when shipped.When only a switch is shipped independently, “BBA2” screw set is attached.

Auto switch mounting screw

Auto switch mounting nut (Square nut)

Auto switch mounting nut (Convex type)

M3 x 0.5 x 8 l

M3 x 0.5 x 10 l

M3 x 0.5

M3 x 0.5

1

1

1

1

BQ-1

BQ-2

BQ-1

BQ-2

D-A7D-A8D-F7D-J7

Note 5) When using BQ-1, BBA2 may be used by itself.When using BQ-2, BQ-2 and BBA2 should be used together as a set, and used in combination with the auto switch spacer (black resin material) and stainless steel screws.

Detailed Contents of Stainless Steel Mounting Screw SetPartno.

BBA2

Applicable auto switch mounting bracket part no.

Applicable auto switch

Content

Description Size No.

1261


MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1261


Series MK/MK2/MK2TSpecific Product Precautions 1Be sure to read before handling.Refer to front matters 42 and 43 for Safety Instructions and pages 3 to 11 for Actuator and Auto Switch Precautions.

Fig. (1)

Hexagon wrenchWrench

Arm

Speed Adjustment

Warning1. Make sure to connect a speed controller to

the cylinder and adjust it so that the cylinder speed will be within a range of 50 to 200 mm/s.If a clamp arm other than the available option is used, make sure to select an appropriate arm after calculating the inertial moment of the arm.To operate a speed controller, make sure that the valve is fully closed, and gradually open the valve to adjust the speed.

Fig. (2)

Operating Environment

Clamp Arm Removal and Reinstallation

Warning1. To remove and reinstall the arm on the piston

rod, instead of securing the cylinder body, use a wrench to secure the arm to loosen or to tighten the bolt (Fig. (1)).An excessive amount of rotational force will be applied to the piston rod if the bolt is tightened by securing the cylinder body, which could damage the internal parts.To fabricate an arm, make sure to machine a detect portion that corresponds to the parallel section at the rod end.

Warning1. Do not use the cylinder under following en-

vironments:1) An area in which fluids such as cutting oil splash on the pis-

ton rod.2) An area in which foreign matter such as particles, cutting

chips, dust, or spatter is present.3) An area in which the ambient temperature exceeds the oper-

ating range.4) An area exposed to direct sunlight.5) An environment that poses the risk of corrosion.

Mounting Arms for Width Across Flats (MK Only)

Warning1. When installing the arm for the parallel sec-

tion at the rod end, the strength of the piston rod might be insufficient depending on the direction in which the arm is installed. There-fore, make sure to install the arm in the direc-tion indicated in Figure A. (Fig. (2))

1262

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1262



Operating Environment

Warning1. A cylinder could malfunction or the non-rotating accuracy could be affected if a rotational force is

applied to the piston rod. Therefore, observe the particulars given below before operating the cy-linder.1) Make sure to mount the cylinder vertically (Fig. (3)). (MK, MK2 only)2) Do not absolutely perform any work (such as clamping or acting as a stopper, etc.) in the rotary direction (Fig. (4)).3) To clamp, make sure to do so within the clamp stroke (straight-line stroke) range (Fig. (5)).4) Make sure that the clamping surface of the workpiece is perpendicular to the cylinder's axial line (Fig. (6)).5) Do not operate the cylinder in such a way that an external force causes the workpiece to move while being clamped (Fig. (7)).6) Furthermore, do not operate the cylinder in an application in which a rotational force will be applied to the piston rod.

1) Do not operate the cylinder horizontally.

(MK, MK2 only)

2) Do not perform any work in the rotary direction.

3) Do not clamp during the rotary stroke.

4) Do not clamp on a slanted surface. 5) Make sure that the workpiece does not move during clamping.

Fig. (3)

Fig. (5)

Fig. (4)

Rotary stroke

Clamp stroke

Rotary stroke

Fig. (6) Fig. (7)

1263

MK

CK�1

CLK2

CKQCLKQ

Individual-X�

D-�

-X�

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1263


Magnetic substance(Steel plate, etc.)

Magnetic substance(Steel plate, etc.)


• When a magnetic substrate surrounds the cylinder as shown in the figure below (including when the magnetic substrate is only on one side of the cylinder), the movement of the auto switch may become unstable, so please contact SMC.

• If welding cables or welding gun electrodes are in the vicinity of the cylinder, the magnets in the cylinder could be affected by the exter-nal magnetic fields. (Contact SMC if the welding amperage exceeds 16000 A.) If the source of strong magnetism comes in contact with the cylinder or an auto switch, make sure to install the cylinder away from the source of the magnetism.If the cylinder is to be used in an environment in which spatter will come in direct contact with the lead wires, cover the lead wires with a protective tube. For the protective tube, use a tube I.D. ø7 or more, which excels in heat resistance and flexibility.Contact SMC if an inverter welder or a DC welder will be used.

Ι = m1· + m2·a12

3a22

3

Ι = m·a2

12

Ι = m·a2

12

Ι = m1· + m2· 4a12 + b2

124a22 + b2

12

Ι = m·a2 + b2

12

Ι = m1· + m2·a22 + Ka12

3

k = m2·2r2

5

Calculation of Moment of Inertia

Mounting With Magnetic Field Resistant Auto Switch D-P4DWL

1. Thin shaftPosition of rotational axis: Vertical to the bar and through the end

4. Thin rectangular plate (Rectangular parallelopiped)Position of rotational axis: Vertical to the plate and through the end

2. Thin shaftPosition of rotational axis: Perpendicular to the shaft through the center of gravity

5. Thin rectangular plate (Rectangular parallelopiped)Position of rotational axis: Through the center of gravity and vertical to the plate (Same as also thick rectangular plate)

3. Thin rectangular plate (Rectangular parallelopiped)Position of rotational axis: Parallel to side b through the center of gravity

6. Load at the end of lever arm

Ι: Moment of inertia (kg·m2) m: Load mass (kg)

a

1264

P1233-P1316-E.qxd 11/17/08 3:32 PM Page 1264


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