-
BBT30 Tooling SystemBBT30 Tooling SystemBBT30 Tooling SystemBBT30 Tooling System
Firm contacting of flange surface achieves stable high accuracy for fitting.
Duplex-holding prevents fretting.
Even if the spindle is expanded during high speed rotation, the taper and flange surface contacts firmly, Sustaining balancing of duplex-holding achieves high efficient machining.
<Adopting BIG-PLUS Spindle System>With the duplex-holding by taper and flange surface, the bending stiffness is stronger and the high speed cutting and feeding is available. Since the flange surface contacts with the spindle surface, sinking of the holder is prevented during high speed rotation and heavy cutting. The Z-direction dimension stability is firmer.
BIG-PLUS Spindle System is a licensed product of BIG DAISHOWA SEIKI CO LTD.
Comparison with conventional holders
No Sinking of HolderZ-direction Dimension Stability andWorking Face Accuracy Improved
Prevention of Z-dimension variation in high speed rotation
Bending Stiffness Improved by Duplex-Holding
Anti-vibration Improved by Duplex-Holding
High Efficient Machining in High Speed Rotation/Feeding
Long life of cutting tools
Repeating Accuracy of On/Off-Spindle Improved
Conventional BT shank system BBT Duplex-Holding system
Surface ContactGap
BIG-PLUS Spindle System is a licensed product of BIG DAISHOWA SEIKI CO LTD.
◆The above Maxlof tapered is the length when Length Adjustment Bolt (APM) is used.◆Dimensions of tapered shank are in accordance with the standard of BIG-PLUS spindle.◆Collet, Spanner, Coolant-Sealing Back-up Screw, Length Adjustment Bolt and retention knob are not included in the above. They are separate accessories.※For the collets and spanners, please refer to page 43.
0.50.60.70.50.60.70.50.60.80.50.70.90.50.80.71.0
47
52
46
51
38
62
̶68̶73
457510545751054575105457510545756090
BBT30
BBT30
BBT30
BBT30
BBT30
BBT30
-SGC6-45-SGC6-75-SGC6-105-SGC8-45-SGC8-75-SGC8-105-SGC10-45-SGC10-75-SGC10-105-SGC12-45-SGC12-75-SGC12-105-SGC16-45-SGC16-75-SGC20-60-SGC20-90
93.4123.4153.493.4123.4153.493.4123.4153.493.4123.4153.493.4123.4108.4138.4
APM6
APM8-2
APM10-2
APM12-2
̶APM16-2 ̶APM20-2
FS20
FS26
FS33
FS36
FS42
FS50
CSH6
CSH8
CSH10
CSH12
CSH16
CSH20
SGN6
SGN8
SGN10
SGN12
SGN16
SGN20
SG6
SG8
SG10
SG12
SG16
SG20
BBT307/24
M8×0.75
M10×1.5
M12×1.5
M14×1.5
20
26
31
36
42
50
1.0~6.0
1.0~8.0
2.0~10.0
3.0~12.5
3.0~16.0
3.0~20.0
̶M18×1.5̶
M22×1.5
■Ultra High PrecisionGuaranteeing the integrated runout accuracy of within 5μm.
Highest precision in this industrial field.
■Super Rigidity・Super Grip ForceMost effectively usable for machining work by the end-mill.
■Super BalancingFor high rotation machining, even the standard model can be used
for rotation up to 25,000min-1
■SafetyLocknut and Safety Cover (PAT.) ensuring
safety in high rotation machining.
BBT30 Super G1 Chucks
g ℓ
φD
φd
L 2
L 1
BBT30 New Drill Mill Chucks
※Coolant seal screw cannot be used. ◆Dimensions of the Taper Shank are in accordance with the standard of BIG-PLUS spindle. ◆Dimensions of Max. l are those when length adjustment bolt -APM type is used. ◆Collet, spanner, retention knob, coolant sealing back up screw, length adjustment bolt are not included the above. They are separate accessories.※For the collets and spanners, please refer to page 45.
0.50.60.70.50.60.70.50.70.90.50.70.90.70.91.10.71.01.21.01.7
6090120609012060901206090120751051207510512090120
55
52
50
62
68
60
73
80
BBT30
BBT30
BBT30
BBT30
BBT30
BBT30
BBT30
-NDC7S-60-NDC7S-90-NDC7S-120-NDC7-60-NDC7-90-NDC7-120-NDC10-60-NDC10-90-NDC10-120-NDC13-60-NDC13-90-NDC13-120-NDC16-75-NDC16-105-NDC16-120-NDC20-75-NDC20-105-NDC20-120-NDC25-90-NDC25-120
CSH7
CSH10
CSH13
CSH16
CSH20̶
̶̶
APM7-2
APM10-2
APM13-2
APM16-2
APM13-1
APM20-2
APM13-2
FS22
FS26
FS33
FS36
FS42
FS52
FS62
108.4138.4168.4108.4138.4168.4108.4138.4168.4108.4138.4168.4123.4153.4168.4123.4153.4168.4138.4168.4
NDN7S
NDN7
NDN10
NDN13
NDN16
NDN20
NDN25
YCC10
YCC7M8×0.75
M12×1.5
M15×1.5
M18×1.5
M15×1.5
M22×1.5
M15×1.5
YCC13
YCC16
YCC20
YCC25
33
22
25
36
42
52
62
0.5~10.0
0.5~7.0
0.5~13.0
2.5~16.0
3.5~20.0
5.0~25.0
BBT307/24
※
※※
g ℓ
φD
φd
Gauge line
L 2
L 1
TaperModelMaximumℓ
Length Adjustment ScrewLength from theGauge Line L2
Nut Outside DiameterD
Total LengthL1
Gripping Capacityd
Weight (kg)Length AdjustmentScrew (option)
Applicable Spanner(option)
Coolant SealScrew (option)
ApplicableLock Nut
Applicable Collet (option)
Unit: mm
●Dimensional Drawing
Gaug
e li
neTaper
●Dimensional Drawing
Taper
■Wide Range of UseVarious cutting tools including drill bits, tapping drills, reamers,
and end mills can be chucked.
■High Gripping ForceThat is an advantage of double taper collets.
■Applicable to high-pressure coolantCoolant of high pressure up to 7.0MPa is usable.
■High BalancingGrinding of the external surface of
the holder secures a high balancing.
Weight (kg)Length AdjustmentScrew (option)
TaperModelMaximumℓ
Length Adjustment Screw Applicable Spanner(option)
Coolant SealScrew (option)
ApplicableLock Nut
Applicable Collet (option)
Length from theGauge Line L2
Total LengthL1
Unit: mm
Nut Outside DiameterD
Gripping Capacityd
-
BBT30 Power Lock Milling Chucks
BBT30 Face Mill Arbors
●Dimensional Drawing
※ Special sizes are also available.
※ Retention knob is a separate accessory.
BBT30
BBT30
BBT30
-FMA22-40-FMA22-60-FMA22.225-40-FMA22.225-60-FMA22.225-90-FMA25.4-60-FMA25.4-90
40604060906090
0.700.900.700.901.301.001.50
D1 L1
22.0
22.225
25.4
B1
φ10
8
9.5
B2 D3 D4 H1 H2 W
5
3.5
5
G
M10
M8
M12
13
33
̶
23
8
10
̶
12
6
10
D2
45
45
50
BBT307/24
L2
18
18
22
(六角穴付ボルトM10×35ℓ)
φD1
φD2
φD4
φD3
B1
Taper
L1 L2
B2
Gauge line
GH2
H1W
●Dimensional Drawing
※Please use a tool of which shank diameter tolerance h7.
※Dimensions of tapered shank are in accordance with the standard of BIG-PLUS spindle.
※Straight collet and Spanner are not included in the above. They are separate accessories.
※For the collets and spanners, please refer to page 46.
BBT30-PMC20-75 FS55 0.96BBT307/2475SCR20SCA20SCC20
75123.45220
Super Keyless Drill Chucks with BBT30 Shank
●Dimensional Drawing
BBT30-SLC13-110 1.4051
D
110
L1
122.5
L2
BBT300.5~13 FS13LC
46.775
φ20φ52
56~66
28.31
BBT30
φD
L1
L2
■High gripping torqueGripping torque was increased by making the tightening
collar thicker, and by strengthening tightening of the
opening by modifying chuck ID with straight slit.
■High Rigidity・High AccuracyHigh rigidity thanks to tightening collar end
holding system (duplex holding) and it is
manufactured with concentricity within 0.005mm
Unit: mm
ModelGrip Diameter
dNut OutsideDiameter D
Total LengthL1
Length from theGauge Line L2
Maximum ℓ TaperApplicable Collet
(option)Applicable Spanner
(option)Weight (kg)
Unit: mm
Model Weight (kg)Taper
■The sleeve-lock mechanism working
in reverse rotation.
■M16 tapping available.
■Run-out accuracy: smaller than
0.05mm
Unit: mm
Model TaperGrippingCapacity
ApplicableSpanner
Weight(kg)
CNC Keyless Drill Chucks with BBT30 Shank
BBT30-LC6.5F-70BBT30-LC13F-90
0.601.15
3450
D
7090
L1
76102
L2
BBT300.5~6.50.5~13
FS6.5LCFS13LC
●Dimensional Drawing
D1
Taper
L1
L2
■Integration of shank and chuck made
its compact size and safety.
■Re-tightening with hook spanner
prevents loosening at an emergency
stopping.
■Run-out accuracy: smaller
than 0.05mm
Model TaperGrippingCapacity
ApplicableSpanner
Weight(kg)
Unit: mm
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