non-rotating double power cylinder - smc pneumatics double power cylinder mgz series ... 3848 (6.0)...

®

Non-rotating Double Power CylinderMGZ Series

N348

External non-rotation guide unnecessaryDouble output power in the extend directionLarge side loading capabilitiesHigh strength and space savings

2®

Air pressure supplied from A operates on surfaces 1 and 2. (extension)

Air pressure supplied from B operates on surface 3. (retraction)

Regulator with checkvalve unnecessaryA regulator with check valve that is required for a traditional lifting circuitbecomes unnecessary.

A B

A B

Tube rod diameter

External dimension

Sliding key x 2Non-rotation guide unnecessary!Employs a large bore tube rod up to 80% of the cylinder's external square dimension + slide bearing. In addition, a built-in non-rotation mechanism using sliding keys allows direct mounting of loads.

Double output power for extension!A unique construction doubles the pressurized area for extension.An ideal air cylinder for lifting and pressing operations

Mounting accuracyimprovedPositioning holes are provided on the work piece mounting surface for easy alignment.

Series MGZNon-rotating

Double Power Cylinder

3®

Application examples

Chuck

Press

RobotShooter

Lifter

Pusher

(Approx.30% reduction)

Clean external appearance

Long stroke capability& space savingsStrokes up to 1000mm are possible. Due to the construction,the overall length is not two or more times the stroke as in the case of conventional double output cylinders (tandem type).

High strength & space savingsMoment resistance is equal to a guide cylinder (cylinder + two guide shafts).Furthermore, the mounting cross section is reduced byapproximately 40%.

Piping is centralized on the head cover.Auto switches are contained in grooves on four sides.

4®

Series MGZ Non-rotating Double Power Cylinder

NilS3n

2 pcs.1 pc.3 pcs.

"n" pcs.

Number of auto switches

Auto switch type

Standard Type

Bore size

MGZ

Stroke (mm)Refer to the standard stroke table on page 5.

∗ Select applicable auto switch models from the table below.

How to Order

405063

NilWithout auto switch(built-in magnet cylinder)

40mm50mm63mm

10040 Z73

Applicable auto switches/Direct mounting type

Special functionType Electricalentry

Grommet

Ind

icat

or

ligh

t

Wiring(output)

2 wire

3 wire

Load voltage

—

ACDC

Lead wire length (m)∗

0.5(Nil)

3(L)

5(Z)

�

�

�

�

�

�

�

�—

�

�

�

�

�

�

�

�

�

�

—

�

�

�

�

�

�

�

IC circuit

Applicable loads

Auto switch models

Yes

IC circuit

100V or less

5V

5V, 12V

—

24V

Yes

———

2 wire

3 wire (NPN)

3 wire (PNP)

Ree

d sw

itch

So

lid s

tate

sw

itch

——� � —

—

Y69A

Y7PV

Y69B

Y7NWV

Y7PWV

Y7BWV

IC circuit

—

—

No

Water resistant (2 color indicator)

Diagnosticindication

(2 color indicator)

——— Relay,PLC

12V

24V

Grommet

—

IC circuit

Relay,PLC3 wire (NPN)

3 wire (PNP)

2 wire

—

5V, 12V

12V

5V, 12V

100V

Z76

Z73

Z80

Y59A

Y7P

Y59B

Y7NW

Y7PW

Y7BW

Y7BA—

—

—

—

Electrical entry direction

Perpendicular In-line

Switch spacers

Applicable bore size (mm)

Switch spacer40, 50, 63

BMP1-032

∗ Lead wire length symbols: 0.5m ...... Nil (Example) Y69B3m ......... L Y69BL5m ......... Z Y69BZ

∗∗ Solid state switches marked with a "�" symbol are produced upon receipt of order.∗∗∗ When later installing auto switches on a cylinder ordered without auto switches,

the switch spacers in the table below are necessary.

5®

Non-rotating Double Power Cylinder Series MGZ

SpecificationsBore size (mm)

Action

Fluid

Proof pressure

Maximum operating pressure

Minimum operating pressure

Ambient and fluid temperature

Lubrication

Piston speed

Stroke length tolerance

Cushion

Thread tolerance

Port size

Double acting single rod

Air

1.5MPa (217.5psi)

1.0MPa (145psi)

0.08MPa (11.6psi)

Without auto switch –10 to 70°C (14 to 158°F) (with no freezing)

With auto switch –10 to 60°C (14 to 140°F) (with no freezing)

Non-lube

50 to 700mm/s (2 to 27.5in/s)

to 250 , 251 to 1000 mm

Rubber bumper

JIS class 2

40

+1.0 0

Standard strokes

40, 50, 63

Bore size (mm)

75, 100, 125, 150, 175

200, 250, 300

350, 400, 450, 500, 600

700, 800, 900, 1000

Standard strokes (mm) Long strokes (mm)

50 63

+1.4 0

1/4 1/4 1/4

Weight tableBore size (mm)

Standard weight

Additional weight per 50mm of stroke

40

1.9 (4.2)

0.39 (0.86)

50

3.03 (6.7)

0.59 (1.30)

63

4.83 (10.6)

0.78 (1.72)

kg (lb.)

Theoretical Output

Bore size (mm)

Model

MGZ40

MGZ50

MGZ63

20

25

32

OUT

IN

OUT

IN

OUT

IN

45 x 40

40

55 x 50

50

68 x 63

63

2533 (3.9)

942 (1.5)

3848 (6.0)

1473 (2.3)

5945 (9.2)

2313 (3.6)

Rod diameter(mm)

Operatingdirection

Piston areamm² (in²)

Operating pressure MPa (psi)N (lbf)

0.2(29.0)

507(114.0)

188(42.3)770

(173.1)29

(66.3)1189

(267.3)463

(104.1)

0.3(43.5)

760(170.8)

283(63.6)1154

(259.4)442

(99.4)1784

(401.0)694

(156.0)

0.4(58.0)1013

(227.7)377

(84.7)1539

(346.0)589

(132.4)2378

(534.6)925

(207.9)

0.5(72.5)1267

(284.8)471

(105.9)1924

(432.5)737

(165.7)2973

(668.3)1157

(260.1)

0.6(87.0)1520

(341.7)565

(127.0)2309

(519.1)884

(198.7)3567

(801.9)1388

(312.0)

0.7(101.5)

1773(398.6)

659(148.1)2694

(605.6)1031

(231.8)4162

(935.6)1619

(364.0)

0.8(116.0)

2026(455.4)

754(169.5)3078

(691.9)1178

(264.8)4756

(1069.1)1850

(415.9)

0.9(130.5)

2280(512.5)

848(190.6)3463

(778.5)1326

(298.1)5351

1202.9)2082

(468.0)

1.0(145.0)

2533(569.4)

942(211.8)3848

(865.0)1473

(331.1)5945

(1336.4)2313

(520.0)

1in=25.4mm

6®


Construction

Parts listNo.12345678910111213

Description MaterialAluminum alloyAluminum alloyAluminum alloyAluminum alloy

Carbon steel pipeCarbon steel

Aluminum alloyAluminum alloy

Lead bronze castingLead bronze casting

Aluminum alloyCarbon steelCarbon steel

Rod coverHead coverCylinder tubePiston rodTube rodTube rod coverPistonStationary pistonBushingThrust plateHolderPinTie-rod

NoteClear anodizedClear anodizedHard anodizedHard anodized

Hard chrome platedElectroless nickel plated

ChromatedChromated

ChromatedZinc chromated

Corrosion resistant chromated

No.141516171819202122232425

DescriptionTie-rod nutHexagon socket head cap screwSpring washerBumperWear ringMagnetRod seal ARod seal BPiston sealPiston gasketTube rod gasketCylinder tube gasket

MaterialCarbon steel

Chrome molybdenum steelSteel wireUrethane

ResinMagnetic material

NBRNBRNBRNBRNBRNBR

Nickel platedNickel platedNickel plated

Note

7®


Dimensions (mm)

to 1000 to 1000 to 1000

Stroke rangeBore size

(mm)

404550

H

101414

M

252525

K

M6 x 1.0M8 x 1.25M8 x 1.25

J

7892

110

I

23.52834.5

GB

34.54046.5

GA

364653

KA

212632

E

455568

465566

597182

B

405063

DC

to 1000 to 1000 to 1000

Stroke rangeBore size

(mm)

138150171

S

178195221

ZZ

9.512.515

Y

666

XL

M6 x 1.0M8 x 1.25M8 x 1.25

MM

121616

XA

1/41/41/4

P

445056

N

121515

455

MB

405063

MC

øI

2–Rc P

2 x 4–J

S + Stroke

MC

NK

H�B

�C

�KA

�E

4–MM depth M øXAH7 depth XL + 0.2 0

ZZ + Stroke

MB

MA

N

GA

GB

Y

øD

Y

181818

MA

1in = 25.4mm

8®


Electrical entry

Grommet

Grommet

Grommet (2 color indicator, with diagnostic output)

Grommet (2 color indicator, water resistant)

40

50

63

D-Z7�, Z80D-Y59�, Y69�, Y7P�D-Y7NW�, Y7PW�, Y7BW�D-Y7BAL

A

23

23

32

B

0

0

0

D-Z7�, Z80

D-Y59�, Y69�, Y7P�

D-Y7NW�, Y7PW�, Y7BW�

D-Y7BAL

Applicable auto switches

Minimum strokes for mounting of auto switches

Be sure to read before handling.Refer to pages 16 through 18 for auto switch precautions.

Auto switch models

Bore size(mm)

Auto switch type

Reed switch

Solid state switch

Specific Product Precautions

D-Y59A (B), Y69A (B)Y7P (V)

Auto switch type

Reed switch

Solid state switch

D-Z73, Z76, Z80

ø40 ø50 ø63Number ofauto switches mounted

2 pcs. (same side)

1 pc., 2 pcs. (different sides)

2 pcs. (same side)


2 pcs. (same side)


2 pcs. (same side)

1pc., 2 pcs. (different sides)

D-Y7NW (V), Y7PW (V)

Y7BW (V)

D-Y7BAL

60

20

60

20

70

25

70

25

Auto Switches/Proper Mounting Position for Stroke End Detection

Auto Switch Mounting

Correct Incorrect

0 to 1 A B

Flat headwatchmakers screw driver

Switch spacer

Switch mounting screw(M2.5 x 4 l)Accessory

When mounting an auto switch, first hold the switch spacer between your fingers and press it into the groove. Then confirm that it is seated in the proper mounting position, and correct if necessary. Next insert the auto switch into the groove and slide it under the switch spacer.After setting in the desired mounting position, tighten the switch mounting screw, which is included, using a flat head watchmakers screw driver.

Auto switch models

Note) When tightening the auto switch mounting screw use a watchmakers screw driver with a handle about 5 to 6mm in diameter. Also tighten with a torque of about 0.05 to 0.1N⋅m. As a rule, it should be turned about 90° past the point at which tightening can be felt. (1N·m = 0.7375ft·lb)

1in = 25.4mm

9®


D-Z76D-Z73 D-Z80

D-Y59A, Y69A

D-Y59B, Y69B

D-Y7P (V)

D-Y7NW (V)

D-Y7BW (V)

D-Y7PW (V)

D-Y7BAL

Indicator light

Optimum operating position

Operatingrange OFF

ON

RedIndication

Green Red

Reed Switch Internal Circuits

Solid State Switch Internal Circuit

Contact Protection Boxes/CD-P11, CD-P12

Contact protection box dimensions

Contact Protection Box Connection

4.4

3846

ø3.4

189

3.4 CD-P

VOLT SW

ITC

H

15.5

Contact protection box internal circuitsLead wire colors inside ( ) are those prior to conformity with IEC standards.

Part No.Load voltageMax. load current

∗ Lead wire length ......... Switch connection side 0.5m Load connection side 0.5m

Surgeabsorber

Chokecoil

OUTBrown [Red]

OUTBlue [Black]

ChokecoilZener

diode

CD-P11 CD-P12

CD-P11 CD-P1224VDC50mA

200VAC12.5mA

100VAC or less25mA

Contact protection box specifications

OUT (+)Brown [Red]

OUT (–)Blue [Black]

LED

Ree

d sw

itch

Resistor

Zener diode

Contactprotectionbox

CD-P11

CD-P12

Brown (Red)

Blue (Black)

OUT (+)Brown (Red)

OUT (–)Blue (Black)

LED

Ree

d sw

itch

Resistor

Reversecurrentpreventiondiode

OUTBlack (White)

DC (+)Brown (Red)

DC (–)Blue (Black)

Load

(+)

(–)

DCpower

Ree

d sw

itch Contact

protectionbox

CD-P11

CD-P12

OUT (±)Brown (Red)

OUT ( )Blue (Black)

±

OUT (+)Brown (Red)


OUTBlack (White)

DC (+)Brown (Red)


DC (+)Brown (Red)

OUTBlack (White)


OUT (+)Brown (Red)


OUTBlack (White)

DC (+)Brown (Red)


DC (+)Brown (Red)


OUTBlack (White)

OUT (+)Brown (Red)


Mai

nsw

itch

circ

uit

<Applicable auto switches>D-Z7, Z8Auto switches shown above do not have internal contact protection circuits.

1. The operated load is an induction load.2. The length of wiring to the load is 5m or more.3. The load voltage is 100VAC.

A contact protection box should be used in any of the above cases.

To connect a switch unit to a contact protection box, connect the lead wires from the side of the contact protection box marked SWITCH to the lead wires coming out of the switch unit. Further, the switch unit should be kept as close as possible to the contact protection box, with a lead wire length of no more than 1 meter.

Mai

nsw

itch

circ

uit

Mai

nsw

itch

circ

uit

Mai

nsw

itch

circ

uit

Mai

nsw

itch

circ

uit

Mai

nsw

itch

circ

uit

Mai

nsw

itch

circ

uit

10®


Selection Graphs to (Vertical Upward Mounting)

Selection graph to 300mm/s Selection graph to 500mm/s

Selection graph to 700mm/s Selection Example: Vertical Upward Mounting

1. Confirmation of allowable load weight by application

Caution Theoretical output must be confirmed separately. Refer to the theoretical output table on page 5.

Vertical upward: Lifter

Maximum speed mm/s (in/s)

to 300 (11.8) to 500 (19.7) to 700 (27.6) to 300 (11.8) to 500 (19.7) to 100 (3.9) to 200 (7.9) to 300 (11.8)

Graph

∗ l: The dimension for the load center of gravity position is that when the cylinder is retracted.

Graph Graph Graph Graph Graph Graph Graph

Maximum speed mm/s (in/s) Load center of gravity position l mm (in)

Vertical downward: Press Horizontal: Chucking

L

m

m

F

m

l

F

Continuous line: Operating pressure 0.4MPa or more

Dotted line: Operating pressure 0.5MPa or more

Continuous line:Operating pressure 0.4MPa or more

Continuous line: Operating pressure 0.4MPa or more

Dotted line: Operating pressure 0.5MPa or more

300

100

50

10

510 30 50 70 100 200 300

ø63

ø50

ø40

Eccentric distance L (mm)

Load

wei

ght

m (

kg)

100

50

10

5

110 30 50 70 100 200 300

ø63

ø50

ø40


Load

wei

ght

m (

kg)

200

100

50

10

2

5

10 30 50 70 100 200 300

ø63

ø50

ø40


Load

wei

ght

m (

kg)

[example q]

Selection conditions Mounting: Vertical upward (lifter)Maximum speed: 500mm/sLoad weight: 40kgEccentric distance: 80mm

Determine the selection conditions in order from the top of the table below, and choose one of the selection graphs to be used.Selection Conditions:

Refer to graph based on vertical mounting and speed of 500mm/s.Find the intersection of load weight 40kg and eccentric distance 80mm in graph , and determine bore size ø63.

Note: 1kg = 2.2046lb1in = 25.4mm1MPa = 145psi

11®


Selection Graphs (Vertical Downward Mounting)Selection Example:Horizontal Mounting

Selection Graphs to (Horizontal Mounting)

2. Confirmation of allowable rotary torque 3. Confirmation of non-rotating accuracy

Graph to 300mm/s Graph to 500mm/s

Graph l: 100mm or less Graph l: 101 to 200mm Graph l: 201 to 300mm

Bore size (mm)

Allowable rotary torque Non-rotating accuracy Deflection angle for eccentric load

3-1 Rolling direction 3-2 Pitching direction

40

50

63

Non-rotating accuracy (±θ°)

± 0.3° or less

Bore size (mm)

40

50

63

Non-rotating accuracy (± θ°)

± 0.12° or less

Bore size (mm)

40

50

63

Allowable rotary torque T (N⋅m)

7

15

20

+θ°–θ°

+θ°

+θ°

–θ°

–θ°

Selection conditions Mounting: Horizontal (chucking)Stroke: 300mmLoad center of gravity position: 100mmLoad weight: 10kgOperating pressure: 0.5MPa

Refer to graph based on horizontal mounting and load center of gravity position. Find the intersection of load weight 10kg and stroke 300mm in graph , and determine bore size ø50.The theoretical output for extension is 1924N, from the theoretical output table on page 5.

20

40

60

80

100

120

0

ø63

ø50

ø40

Operating pressure P (MPa)

Load

wei

ght

m (

kg)

0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

5

10

20

50

80

1

ø63

ø50

ø40

Stroke (mm)

Load

wei

ght

m (

kg)

70 100 300 500 1000

5

10

20

50

1

ø63

ø50

ø40

Stroke (mm)

Load

wei

ght

m (

kg)

70 100 300 500 1000

5

10

20

40

1

ø63

ø50

ø40

Stroke (mm)

Load

wei

ght

m (

kg)

70 100 300 500 1000

ø63

ø50

ø40

Operating pressure P (MPa)

Load

wei

ght

m (

kg)

0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

70

60

50

40

30

20

10

80

0

[Example ]

T

Note: 1kg = 2.2046lb1in = 25.4mm1MPa = 145psi

12®


Note 1) ISO 4414: Pneumatic fluid power -- Recommendations for the application of equipment to transmission and control systems

Note 2) JIS B 8370: General Rules for Pneumatic Equipment

Warning

Caution : Operator error could result in injury or equipment damage.

Warning : Operator error could result in serious injury or loss of life.

Danger : In extreme conditions, there is a possible result of serious injury or loss of life.

These safety instructions are intended to prevent a hazardous situation and/or equipment damage. These instructions indicate the level of potential hazard by a label of "Caution", "Warning" or "Danger". To ensure safety, be sure to observe ISO 4414 Note 1), JIS B 8370 Note 2) and other safety practices.

1. The compatibility of pneumatic equipment is the responsibility of the person who designs the pneumatic system or decides its specifications.Since the products specified here are used in various operating conditions, their compatibility for the specific pneumatic system must be based on specifications or after analysis and/or tests to meet your specific requirements.

2. Only trained personnel should operate pneumatically operated machinery and equipment.Compressed air can be dangerous if an operator is unfamiliar with it. Assembly, handling or repair of pneumatic systems should be performed by trained and experienced operators.

3. Do not service machinery/equipment or attempt to remove components until safety is confirmed.

1. Inspection and maintenance of machinery/equipment should only be performed after confirmation of safe locked-out control positions.

2. When equipment is to be removed, confirm the safety process as mentioned above. Cut the supply pressure for this equipment and exhaust all residual compressed air in the system.

3. Before machinery/equipment is restarted, take measures to prevent shooting-out of cylinder piston rod, etc. (Bleed air into the system gradually to create back pressure.)

4. Contact SMC if the product is to be used in any of the following conditions:1. Conditions and environments beyond the given specifications, or if product is used outdoors.2. Installation on equipment in conjunction with atomic energy, railway, air navigation, vehicles, medical

equipment, food and beverages, recreation equipment, emergency stop circuits, press applications, or safety equipment.

3. An application which has the possibility of having negative effects on people, property, or animals, requiring special safety analysis.

Safety Instructions

13®

Actuator Precautions 1 Series MGZ

1. Confirm the specifications.The products advertised in this catalog are designed according touse in industrial compressed air systems. If the products are used inconditions where pressure, temperature, etc., are out of specifica-tion, damage and/or malfunction may be caused. Do not use inthese conditions. (Refer to specifications.)

Consult SMC if you use a fluid other than compressed air.

2. Intermediate stopsWhen intermediate stopping of a cylinder piston is performed with a3 position closed center type directional control valve, it is difficult toachieve stopping positions as accurate and minute as with hydraulicpressure due to the compressibility of air.

Furthermore, since valves and cylinders, etc., are not guaranteed forzero air leakage, it may not be possible to hold a stopped positionfor an extended period of time. Contact SMC in case it is necessaryto hold a stopped position for an extended period.

1. Operate within the limits of the maximumusable stroke.The piston rod will be damaged if operated beyond the maximumstroke. Refer to the air cylinder model selection procedure for themaximum useable stroke.

2. Operate the piston within a range such thatcollision damage will not occur at the strokeend.Operate within a range such that damage will not occur when thepiston having inertial force stops by striking the cover at the strokeend. Refer to the cylinder model selection procedure for the rangewithin which damage will not occur.

3. Use a speed controller to adjust the cylinderdrive speed, gradually increasing from a lowspeed to the desired speed setting.

4. Provide intermediate supports for long strokecylinders.Provide intermediate supports for cylinders with long strokes to pre-vent rod damage due to sagging of the rod, deflection of the tube,vibration and external loads, etc.

Precautions on Design Selection

Warning Warning

Caution

1. There is a danger of sudden action by aircylinders if sliding parts of machinery aretwisted, etc. and, changes in forces occur.In such cases, human injury may occur; e.g., by catching hands orfeet in the machinery, or damage to the machinery itself may occur.Therefore, the machine should be designed to avoid such dangers.

2. Install a protective cover when there is a riskof human injury.If a driven object and moving parts of a cylinder pose a danger ofhuman injury, design the structure to avoid contact with the humanbody.

3. Securely tighten all stationary parts andconnected parts so that they will notbecome loose.Especially when a cylinder operates with high frequency or isinstalled where there is a lot of vibration, ensure that all partsremain secure.

4. A deceleration circuit or shock absorber,etc., may be required.When a driven object is operated at high speed or the load isheavy, a cylinder’s cushion will not be sufficient to absorb theimpact. Install a deceleration circuit to reduce the speed beforecushioning, or install an external shock absorber to relieve theimpact. In this case, the rigidity of the machinery should also beexamined.

5. Consider a possible drop in operating pres-sure due to a power outage, etc.When a cylinder is used in a clamping mechanism, there is a dan-ger of work pieces dropping if there is a decrease in clampingforce due to a drop in circuit pressure caused by a power outage,etc. Therefore, safety equipment should be installed to preventdamage to machinery and/or human injury. Suspension mecha-nisms and lifting devices also require consideration for drop pre-vention.

6. Consider a possible loss of power source.Measures should be taken to protect against human injury andequipment damage in the event that there is a loss of power toequipment controlled by air pressure, electricity or hydraulics, etc.

7. Design circuitry to prevent sudden lurchingof driven objects.When a cylinder is driven by an exhaust center type directionalcontrol valve or when starting up after residual pressure isexhausted from the circuit, etc., the piston and its driven object willlurch at high speed if pressure is applied to one side of the cylin-der because of the absence of air pressure inside the cylinder.Therefore, equipment should be selected and circuits designed toprevent sudden lurching because, there is a danger of humaninjury and/or damage to equipment when this occurs.

8. Consider emergency stops.Design so that human injury and/or damage to machinery andequipment will not be caused when machinery is stopped by asafety device under abnormal conditions, a power outage or amanual emergency stop.

9. Consider the action when operation isrestarted after an emergency stop or abnor-mal stop.Design the machinery so that human injury or equipment damagewill not occur upon restart of operation. When the cylinder has tobe reset at the starting position, install safe manual control equip-ment.

Be sure to read before handling.

14®

Series MGZ

1. Be certain to align the rod shaft center withthe load and direction of movement whenconnecting.When not properly aligned, the rod and tube may be twisted, anddamage may be caused due to wear on areas such as the innertube surface, bushings, rod surface and seals.

2. When an external guide is used, connect therod end and the load in such a way that thereis no interference at any point within thestroke.

3. Do not scratch or gouge the sliding parts ofthe cylinder tube or piston rod, etc., by strik-ing or grasping them with other objects.Cylinder bores are manufactured to precise tolerances, so thateven a slight deformation may cause malfunction. Also, scratchesor gouges, etc., in the piston rod may lead to damaged seals andcause air leakage.

4. Prevent the seizure of rotating parts.Prevent the seizure of rotating parts (pins, etc.) by applying grease.

5. Do not use until you can verify that equipmentcan operate properly.Verify correct mounting by suitable function and leakage inspec-tions after compressed air and power are connected followingmounting, maintenance or conversions.

6. Instruction manualThe product should be mounted and operated after thoroughlyreading the manual and understanding its contents.

Keep the instruction manual where it can be referred to as need-ed.

1. Preparation before pipingBefore piping is connected, it should be thoroughly blown out withair (flushing) or washed to remove chips, cutting oil and otherdebris from inside the pipe.

2. Wrapping of pipe tapeWhen screwing together pipes and fittings, etc., be certain thatchips from the pipe threads and sealing material do not get insidethe piping.

Also, when pipe tape is used, leave 1.5 to 2 thread ridgesexposed at the end of the threads.

Lubrication

1. Lubrication of non-lube type cylinderThe cylinder is lubricated at the factory and can be used withoutany further lubrication.

However, in the event that it will be lubricated, use class 1 turbineoil (without additives) ISO VG32.

Stopping lubrication later may lead to malfunction due to the lossof the original lubricant. Therefore, lubrication must be continuedonce it has been started.

Caution

Caution

Mounting

Wrapping direction

Pipe tape

Expose Approx. 2 threads

1. Use clean air.Do not use compressed air which includes chemicals, syntheticoils containing organic solvents, salt or corrosive gases, etc., as itcan cause damage or malfunction.

1. Install air filters.Install air filters at the upstream side of valves. The filtrationdegree should be 5µm or finer.

2. Install an after cooler, air dryer or DrainCatch, etc.Air that includes excessive drainage may cause malfunction ofvalves and other pneumatic equipment. To prevent this, install anafter cooler, air dryer or Drain Catch, etc.

3. Use the product within the specified rangeof fluid and ambient temperature.Take measures to prevent freezing, since moisture in circuits canbe frozen under 5°C, and this may cause damage to seals andlead to malfunction.

Refer to SMC’s “Air Cleaning Equipment” catalog for furtherdetails on compressed air quality.

Warning

Air Supply

Caution

Caution

Piping

Actuator Precautions 2Be sure to read before handling.

15®

Actuator Precautions 3 Series MGZ

1. Do not use in environments where there is adanger of corrosion.Refer to the construction drawings regarding cylinder materials.

2. In dusty locations or where water, oil, etc.,splash on the equipment, take suitable mea-sures to protect the rod.

3. When using auto switches, do not operate inan environment with strong magnetic fields.

Operating Environment

WarningMaintenance

Warning1. Maintenance should be performed accord-

ing to the procedure indicated in theinstruction manual.If handled improperly, malfunction and damage of machinery orequipment may occur.

2. Removal of equipment, and supply/exhaustof compressed air.When equipment is removed, first check measures to preventdropping of driven objects and run-away of equipment, etc. Thencut off the supply pressure and electric power, and exhaust allcompressed air from the system.

When machinery is restarted, proceed with caution after confirm-ing measures to prevent cylinder lurching.

1. Drain flushingRemove drainage from air filters regularly.

(Refer to specifications.)

Caution


16®

Series MGZ Auto Switch Precautions 1

1. Confirm the specifications.Read the specifications carefully and use this product appropri-ately. The product may be damaged or malfunction if it is usedoutside the range of specifications of current load, voltage, tem-perature or impact.

2. Take precautions when multiple cylindersare used close together.When multiple auto switch cylinders are used in close proximity,magnetic field interference may cause the switches to malfunc-tion. Maintain a minimum cylinder separation of 40mm. (When theallowable separation is indicated for each cylinder series, use thespecified value.)

3. Pay attention to the length of time that aswitch is ON at an intermediate stroke posi-tion.When an auto switch is placed at an intermediate position of thestroke and a load is driven at the time the piston passes, the autoswitch will operate, but if the speed is too great the operating timewill be shortened and the load may not operate properly. The max-imum detectable piston speed is:

V(mm/s) = x 1000

4. Keep wiring as short as possible.<Reed switch>As the length of the wiring to a load gets longer, the rush currentat switching ON becomes greater, and this may shorten the prod-uct’s life. (The switch will stay ON all the time.)

1) For an auto switch without a contact protection circuit, use a con-tact protection box when the wire length is 5m or longer.

2) Even if an auto switch has a built-in contact protection circuit,when the wiring is more than 30m long, it is not able to adequatelyabsorb the rush current and its life may be reduced. It is againnecessary to connect a contact protection box in order to extendits life. Please contact SMC in this case.

<Solid state switch>3) Although wire length should not affect switch function, use wiring

100m or shorter.

5. Take precautions for the internal voltagedrop of the switch.<Reed switch>

1) Switches with an indicator light (Except D-Z76)

• If auto switches are connected in series as shown below, takenote that there will be a large voltage drop because of internalresistance in the light emitting diodes. (Refer to internal volt-age drop in the auto switch specifications.)

[The voltage drop will be “n” times larger when “n” auto switch-es are connected.]

Even though an auto switch operates normally, the load maynot operate.

Design & Selection

WarningWarning

Auto switch operating range (mm)____________________________Time load applied (ms)

• In the same way, when operating under a specified voltage,although an auto switch may operate normally, the load maynot operate. Therefore, the formula below should be satisfiedafter confirming the minimum operating voltage of the load.

2) If the internal resistance of a light emitting diode causes a prob-lem, select a switch without an indicator light (Model D-Z80).<Solid state switch>

3) Generally, the internal voltage drop will be greater with a 2 wiresolid state auto switch than with a reed switch. Take the same pre-cautions as in 1).

Also, note that a 12VDC relay is not applicable.

6. Pay attention to leakage current.<Solid state switch>With a 2 wire solid state auto switch, current (leakage current)flows to the load to operate the internal circuit even when in theOFF state.

If the criteria given in the above formula are not met, it will notreset correctly (stays ON). Use a 3 wire switch if this specificationwill not be satisfied.

Moreover, leakage current flow to the load will be “n” times largerwhen “n” auto switches are connected in parallel.

7. Do not use a load that generates surge volt-age.<Reed switch>If driving a load such as a relay that generates a surge voltage,use a switch with a built-in contact protection circuit or use a con-tact protection box.

<Solid state switch>Although a zener diode for surge protection is connected at theoutput side of a solid state auto switch, damage may still occur ifthe surge is applied repeatedly. When a load, such as a relay orsolenoid valve, which generates surge is directly driven, use atype of switch with a built-in surge absorbing element.

8. Cautions for use in an interlock circuitWhen an auto switch is used for an interlock signal requiring highreliability, devise a double interlock system to avoid trouble by pro-viding a mechanical protection function, or by also using anotherswitch (sensor) together with the auto switch. Also perform peri-odic maintenance and confirm proper operation.

9. Ensure sufficient clearance for maintenanceactivities.When designing an application, be sure to allow sufficient clear-ance for maintenance and inspections.

Load

Supplyvoltage

Internal voltagedrop of switch

Minimum operatingvoltage of load

– >

Operating current of load (OFF condition) > Leakage current


17®

Auto Switch Precautions 2 Series MGZ

5. Do not allow short circuit of loads.<Reed switch>If the power is turned ON with a load in a short circuit condition,the switch will be instantly damaged because of excess currentflow into the switch.

<Solid state switch>Model J51 and all models of PNP output type switches do nothave built-in short circuit protection circuits. If loads are short cir-cuited, the switches will be instantly damaged, as in the case ofreed switches.

Take special care to avoid reverse wiring with the brown (red)power supply line and the black (white) output line on 3 wire typeswitches.

6. Avoid incorrect wiring.<Reed switch>A 24VDC switch with indicator light has polarity. The brown (red)lead wire or terminal no. 1 is (+), and the blue (black) lead wire orterminal no. 2 is (–).

1) If connections are reversed, a switch will operate, however, thelight emitting diode will not light up.

Also note that a current greater than that specified will damage alight emitting diode and it will no longer operate.

Applicable models: D-Z73

2) However, in the case of a 2 color indicator type auto switch (D-A59W), note that the switch will be in a normally ON condition ifconnections are reversed.

<Solid state switch>1) If connections are reversed on a 2 wire type switch, the switch will

not be damaged if protected by a protection circuit, but the switchwill be in a normally ON state. However, note that the switch willbe damaged if reversed connections are made while the load is ina short circuited condition.

2) If connections are reversed (power supply line + and power sup-ply line –) on a 3 wire type switch, the switch will be protected bya protection circuit. However, if the power supply line (+) is con-nected to the blue (black) wire and the power supply line (–) isconnected to the black (white) wire, the switch will be damaged.

1. Do not drop or bump.Do not drop, bump or apply excessive impacts (300m/s² or morefor reed switches and 1000m/s² or more for solid state switches)while handling.

Although the body of the switch may not be damaged, the insideof the switch could be damaged and cause a malfunction.

2. Do not carry a cylinder by the auto switchlead wires.Never carry a cylinder by its lead wires. This may not only causebroken lead wires, but it may cause internal elements of theswitch to be damaged by the stress.

3. Mount switches using the proper tighteningtorque.When a switch is tightened beyond the range of tightening torque,the mounting screws, mounting bracket or switch may be dam-aged. On the other hand, tightening below the range of tighteningtorque may allow the switch to slip out of position. (Refer to page5 regarding switch mounting, moving, and tightening torque, etc.)

4. Mount a switch at the center of the operatingrange.Adjust the mounting position of an auto switch so that the pistonstops at the center of the operating range (the range in which aswitch is ON). (The mounting positions shown in the catalog indi-cate the optimum positions at stroke end.) If mounted at the endof the operating range (around the borderline of ON and OFF),operation may be unstable.

Mounting & Adjustment Wiring

Wiring

Warning

1. Avoid repeatedly bending or stretching leadwires.Broken lead wires will result from repeatedly applying bendingstress or stretching force to the lead wires.

2. Be sure to connect the load before power isapplied.<2 wire type>If the power is turned ON when an auto switch is not connected toa load, the switch will be instantly damaged because of excesscurrent.

3. Confirm proper insulation of wiring.Be certain that there is no faulty wiring insulation (contact withother circuits, ground fault, improper insulation between terminals,etc.). Damage may occur due to excess current flow into a switch.

4. Do not wire with power lines or high voltagelines.Wire separately from power lines or high voltage lines, avoidingparallel wiring or wiring in the same conduit with these lines.Control circuits containing auto switches may malfunction due tonoise from these other lines.

Warning

∗ Lead wire color changes

OldRed

Black

NewBrownBlue

Output (+)Output (–)

2 wireOldRed

BlackWhite

NewBrownBlueBlack

Power supplyGNDOutput

3 wire

OldRed

BlackWhiteYellow

NewBrownBlueBlack

Orange

Power supplyGNDOutputDiagnostic output

Solid state with diagnostic output

OldRed

BlackWhite

Yellow

NewBrownBlueBlack

Orange

Power supplyGNDOutputLatch typediagnostic output

Solid state with latchtype diagnostic output

Lead wire colors of SMC switches and related products have been changed in order to meet NECA (Nippon Electric Control Equip-ment Industries Association) Standard 0402 for production begin-ning September, 1996 and thereafter. Please refer to the tables provided.Special care should be taken regarding wire polarity during the time that the old colors still coexist with the new colors.

Warning


18®

Series MGZ Auto Switch Precautions 3

1. Never use in an atmosphere of explosivegases.The structure of auto switches is not intended to prevent explo-sion. Never use in an atmosphere with an explosive gas since thismay cause a serious explosion.

2. Do not use in an area where a magnetic fieldis generated.Auto switches will malfunction or magnets inside cylinders willbecome demagnetized. (Consult SMC regarding the availability ofa magnetic field resistant auto switch.)

3. Do not use in an environment where theauto switch will be continually exposed towater.Although switches satisfy IEC standard IP67 construction (JIS C0920: watertight construction), do not use switches in applicationswhere continually exposed to water splash or spray. Poor insula-tion or swelling of the potting resin inside switches may causemalfunction.

4. Do not use in an environment with oil orchemicals.Consult SMC if auto switches will be used in an environment withcoolant, cleaning solvent, various oils or chemicals. If auto switch-es are used under these conditions for even a short time, theymay be adversely affected by improper insulation, malfunctiondue to swelling of the potting resin, or hardening of the lead wires.

5. Do not use in an environment with tempera-ture cycles.Consult SMC if switches are used where there are temperaturecycles other than normal temperature changes, as they may beadversely affected.

6. Do not use in an environment where there isexcessive impact shock.<Reed switch>When excessive impact (300m/s2 or more) is applied to a reedswitch during operation, the contact will malfunction and generateor cut off a signal momentarily (1ms or less). Consult SMC regard-ing the need to use a solid state switch depending upon the envi-ronment.

7. Do not use in an area where surges are gen-erated.<Solid state switch>When there are units (solenoid type lifter, high frequency induc-tion furnace, motor, etc.) which generate a large amount of surgein the area around cylinders with solid state auto switches, thismay cause deterioration or damage to internal circuit elements ofthe switch. Avoid sources of surge generation and disorganizedlines.

8. Avoid accumulation of iron debris or closecontact with magnetic substances.When a large amount of ferrous debris such as machining chipsor welding spatter is accumulated, or a magnetic substance(something attracted by a magnet) is brought into close proximitywith an auto switch cylinder, it may cause auto switches to mal-function due to a loss of the magnetic force inside the cylinder.

Operating Environment Maintenance

WarningWarning1. Perform the following maintenance periodi-

cally in order to prevent possible danger dueto unexpected auto switch malfunction.

1) Securely tighten switch mounting screws.

If screws become loose or the mounting position is dislocated,retighten them after readjusting the mounting position.

2) Confirm that there is no damage to lead wires.

To prevent faulty insulation, replace switches or repair lead wires,etc., if damage is discovered.

3) Confirm the lighting of the green light on a 2 color indicator typeswitch.

Confirm that the green LED is on when stopped at the establishedposition. If the red LED is on, the mounting position is not appro-priate. Readjust the mounting position until the green LED lightsup.

Other

Warning1. Consult SMC concerning water resistance,

elasticity of lead wires and usage at weldingsites, etc.


19®

Specific Product Precautions Series MGZ

1. Do not apply more than the allowable rotary torque to the piston rod.If more than the allowable rotary torque is applied, the slide keys for non-rotation will be deformed and non-rotating accura-cy will be lost. This may cause damage to machinery.

1. When mounting a cylinder, use mounting screws of a suitable length, and tighten them properly within the prescribed range of tight-ening torque.Particularly in cases of high operation frequency, or operation of a cylinder where there is a lot of vibration, employ measures to prevent loosening, such as the application of a thread locker.

2. Do not gouge or scratch the mounting surfa-ces of the rod cover and head cover.Parallelism of the mounting surfaces will be degraded, causing increased operating resistance and wear of the bearings, etc.

3. Mounting of work piece on rod endWhen screwing bolts into the threads of the table surface at the end of the piston rod, be sure the piston rod is fully retracted and use the wrench flats to hold the rod.

Furthermore, tighten the bolts in such a way that the tightening torque is not applied to the non-rotation slide keys.

Mounting

Caution

Selection

1. Operate loads within the range of the operat-ing limits.In accordance with the model selection method, operate within the operating limits for load weight, maximum speed, center of gravity position and rotary torque. Operation beyond the operat-ing limits can cause wear of the bearings and loosening of con-nections, etc., leading to damage of machinery.

2. Construct equipment so that reactive forces such as external stopper and press forces are applied to a cylinder's central axis.When a cylinder stops before the stroke end on a stopper or press, etc., design the external stopper or die so that the reac-tive force is applied to the cylinder's central axis. Off center operation can cause wear of the bearings and loosening of con-nections, etc., leading to damage of machinery.

3. Under horizontal or downward operating con-ditions, lurch prevention measures may be required for the cylinder's extending opera-tion.Because the output force of this cylinder in the extending direc-tion is at least double that in the retracting direction, start-up operation for extension may exceed the control speed of the speed controller. In this case, provide a lurch prevention circuit within the pneumatic circuitry.

4. Do not over throttle the meter-in speed con-troller of the lurch prevention circuit.The start-up time for output in the extending direction will be lengthened by throttling the meter-in speed controller.

Operating Precautions

Model Screws Proper tighteningtorque N⋅m L1

MGZ40MGZ50MGZ63

M6 x 1.0

M8 x 1.25

M8 x 1.25

4.1 to 6.4

8.8 to 13.8

8.8 to 13.8

12

15

15

L2

16

16

16

L1

L2

CautionCaution

Correct Incorrect

Be sure to read before handling.Refer to pages 12-18 for safety instructions, actuator precautions and auto switch precautions.

© 1978-2000 SMC Pneumatics, Inc. All Rights Reserved.April 2000

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