BIG BORE® Front-end pneumatic power chuck

EXTRA large through-hole Ø 140 - 560 mm

BB-N-ES ■ Chuck size 400 - 1000
■ Extended jaw stroke
INCH SERRATION ■ 3 jaws
Application/customer benefits
• End machining of long pipes with upset ends
• Rapid and clamping stroke for short clamping cycles
• Full spindle bore can be used
Technical features
• Air chuck for external clamping with built-in pneumatic cylinder
• Rapid and clamping stroke
• Air feed via distributor ring and SMW-profile seals at stopped spindle
• Built-in non-return valves maintain the air pressure during machining
• Clamping pressure level constantly checked by a safety control system
(only for external clamping)
• Clamping stroke control (no clamping in rapid stroke) is monitored
Standard equipment Ordering example
3-jaw chuck BIG BORE BB-N-ES 400 / Z310
2 elbow unions G 1/2“ (4 for BB-N-ES 1000)
12 mounting bolts (9 for the BB-N-ES 400) Accessories
1 lifting eye bolt Control unit AC-BB / AC-XN
1 set T-nuts with bolts (see general catalog pages 378-381)
1 set soft top jaws
without distributor ring bracket

The principle invented by SMW: Air supply via distributor ring and SMW-profile seal rings
Pressure control prox. sensor
(M8 x 1)

Rapid and clamping stroke control

Picture 1 Picture 2 Picture 3 prox. sensors (M8 x 1)
Open / close movement (only possible at The SMW-profile seals lift to the expanded Safety pressure control: If the pressure is
stopped spindle). The profile seals deform position, not touching the chuck body less than a pre-set safety level, the switch
radially under the pneumatic pressure, anymore. ring moves into the proximity switch field,
sealing on the chuck body and filling the The clamping pressure is maintained by the sending an alarm signal.
cylinder chamber. twin non-return valve. Jaw stroke control: If the part is clamped
When the clamping pressure is reached, the The chuck can start to rotate. in a not correct jaw stroke position, the
air feed is stopped, closing the twin non- switch ring moves into the proximity switch
return valve. field sending an alarm signal.
Rapid stroke / jaw

Clamping stroke / jaw

Rapid stroke Clamping stroke

End machining of pipe with front and rear chucks

Technical data
SMW-AUTOBLOK Type BB-N-ES 400-140 470-191 500-205 500-230 600-275 630-325 850-375 1000-560
Id. No. 052330 053536 052651 052652 052990 052653 052654 052655
Through-hole mm (inch) 140 (5.51“) 191 (7.52“) 205 (8.07“) 230 (9.06“) 275 (10.83“) 325 (12.80“) 375 (14.76“) 560 (22.05“)
Total stroke per jaw mm (inch) 20 (0.79“) 20 (0.79“) 25.4 (1“) 25.4 (1“) 25.4 (1“) 25.4 (1“) 25.4 (1“) 25.4 (1“)
Rapid stroke per jaw* mm (inch) 13 (0.51“) 13 (0.51“) 16.9 (0.67“) 16.9 (0.67“) 16.9 (0.67“) 17.2 (0.67“) 13.4 (0.53“) 15 (0.59“)
Clamping stroke per jaw mm (inch) 7 (0.28“) 7 (0.28“) 8.5 (0.33“) 8.5 (0.33“) 8.5 (0.33“) 8.2 (0.32“) 12 (0.47“) 10.4 (0.41“)
Operating pressure min. / max. bar (psi) 2 / 10 (29 / 145)
Piston area cm2 705 565 1004 895 954 1192 1340 1090
Gripping force at 6 bar kN (lbf) 130 (29225) 115 (25853) 190 (42714) 170 (38218) 185 (41590) 200 (44962) 200 (44962) 170 (38218)
Max. speed r.p.m. 1300 1300 1100 1300 1100 900 750 450
Air consumption / jaw stroke at 6 bar liter 29 22 41 37 39 48 79 57
Weight (without top jaws) kg (lbs) 200 (441) 190 (419) 340 (750) 325 (717) 360 (794) 630 (1389) 970 (2138) 960 (2116)
Moment of inertia kg·m2 6.5 9.83 16.4 16.1 19 36 105 160
* May not be used for clamping.

SMW-AUTOBLOK SMW-AUTOBLOK
361 360
358 SMW-AUTOBLOK
 BIG BORE®
BB-N-ES
■ Main dimensions and technical data INCH SERRATION
Jaw position: Open for external clamping

α H
a
J

c
b
Pressure
control β
ɣ

d
e
g
f
h
ØB
ØD
ØF

ØA
ØC

ØE
ØK

G
Jaw stroke
control G1 L N M
O P
H1
* All hoses / piping must be at least 1/2“ ID and min 3/4“ ID from chuck size 630 on.

BB-N-ES 1000 needs 2 hoses per function open / close (see installation manual). Jaw stroke control Pressure control
(O.D. clamping only)

R
T

To determine the exact position of the jaw stroke control and the pressure control please
U

ask for a customer drawing.

enlarged illustration

Subject to technical changes.

For more detailed information please ask our customer service.

SMW-AUTOBLOK Type BB-N-ES 400-140 470-191 500-205 500-230 600-275 630-325 850-375 1000-560
Id. No. 052330 053536 052651 052652 052990 052653 052654 052655
Mounting Z310 Z310 Z415 Z415 Z450 Z510 Z700 Z700
A mm 467 470 570 570 605 685 850 1000
B mm 140 191 205 230 275 325 375 560
C mm 467 467 570 570 605 685 850 925
D H6 mm 310 310 415 415 450 510 700 700
E mm 400 400 500 500 535 610 775 850
Fixing bolts circle F mm 374 374 474 474 508 580 745 815
G mm M12 M12 M12 M12 M12 M16 M16 M16
G1 mm 26 26 25 25 25 30 30 30
H mm 240 240 282 282 282 307.5 354 332
H1 mm 238 238 280 280 280 305.5 352 330
J mm 8 8 8 8 8 8 8 10
Thread circle 6 x M8 K
L
mm
mm
448
20
448
20
550
20
550
20
585
20
666
20
830
25
910
33
9
M mm - - - - - - - 224
Pneumatic connection N inch G 1/2" G 1/2" G 1/2" G 1/2" G 1/2" G 1/2" G 1/2" G 1/2"
O mm 37 37 37 37 37 39.5 44.5 52.5
P mm 26 26 26 26 26 33 33 33
R mm 35 35 35 35 35 42 35 42
S mm 374 374 474 474 508 580 745 815
T mm 35 35 35 35 35 35 35 35
U mm 374 374 474 474 508 580 745 815
a mm 57 57 57 57 57 75 75 75
b mm 25.5 25.5 25.5 25.5 25.5 30 30 30
Serration c inch 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90°
Bolt ISO 4762 12.9 d mm M20 M20 M20 M20 M20 M24 M24 M24
Min. e mm 14 14 14 14 14 16 16 16
T-nuts distance min. / max. f mm 38 / 90 38 / 85 38 / 104 38 / 92 38 / 79 47 / 100 47 / 140 47 / 125
Serration length g mm 121 106 140 127.5 116.5 138 182 166
Min. / max. h mm 104 / 124 127 / 147 145.6 / 171 158 / 182.5 179.1 / 204.5 204.6 / 230 242.6 / 268 334.6 / 360
α deg. 20 20 15 15 15 15 15 15
β deg. 9 x 40 9 x 40 12 x 30 12 x 30 12 x 30 12 x 30 12 x 30 12 x 30
(Pressure control) γ deg. 83 83 60 60 60 60 60 60

SMW-AUTOBLOK 359
 BIG BORE®
BB-N-ES
INCH SERRATION ■ Top jaws
MHB-D Chuck 400-140 470-191 500-205 500-230 600-275 630-325 850-375 1000-560
Hard reversible top jaws BB-N-ES
Jaw type MHB-D 500 MHB-D 500 MHB-D 500 MHB-D 500 MHB-D 500 MHB-D 630 MHB-D 800 MHB-D 800
a Id. No. 12084546 12084546 12084546 12084546 12084546 12086446 12088046 12088046
b B 60 60 60 60 60 75 75 75
c
H 75 75 75 75 75 85 85 85
T
H L 140 140 140 140 140 160 220 220
T 2 x 19 2 x 19 2 x 19 2 x 19 2 x 19 30 30 30
N 25.5 25.5 25.5 25.5 25.5 30 30 30
Serration 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90°
L N a 46 46 46 46 46 30 51 51
B b 38 38 38 38 38 50 62 62
c 38 38 38 38 38 50 62 62
Gripping ranges kg / set 6.6 6.6 6.6 6.6 6.6 13.5 19.5 19.5

A1 78-264 113-270 175-388 200-388 252-422 295-500 320-610 470-760

S S S A2 125-310 160-315 225-435 250-435 376-546 295-500 330-620 480-770
A3
A3 310-495 345-500 410-620 435-620 475-645 495-700 590-865 745-1030
J2
A1 A2 J1 J1 - - - - - - - -
J2 - - - - - - - -
S 635 640 765 765 765 870 1070 1250

GAB Chuck 400-140 470-191 500-205 500-230 600-275 630-325 850-375 1000-560
Hard top jaws BB-N-ES
Jaw type GAB 500 GAB 500 GAB 500 GAB 500 GAB 500 GAB 630 GAB 800 GAB 800
B
Id. No. 12085146 12085146 12085146 12085146 12085146 12086546 12089046 12089046
L B 55 55 55 55 55 75 75 75
c
b H 73 73 73 73 73 82 82 82
a
H L 195 195 195 195 195 245 320 320
N 25.5 25.5 25.5 25.5 25.5 30 30 30
Serration 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90°

N
a 96 96 96 96 96 113 165 165
b 38 38 38 38 38 50 60 60
Gripping ranges c 38 38 38 38 38 50 60 60
kg / set 16.5 16.5 16.5 16.5 16.5 31.5 40.5 40.5
S

A1 25-160 60-165 75-290 100-290 135-306 130-335 95-385 245-535

A1 S 635 640 765 765 740 870 1060 1210

WBSA-D / WBC-D Chuck 400-140 470-191 500-205 500-230 600-275 630-325 850-375 1000-560
Soft top jaws BB-N-ES
Jaw type WBSA-D 500 WBSA-D 500 WBSA-D 500 WBSA-D 500 WBSA-D 500 WBC-D 630 WBC 800 WBC-D 800
Id. No. (pc.) 12075050 12075050 12075050 12075050 12075050 12076440 12078040 12078040
c B 60 60 60 60 60 80 80 80
b
a H 60 60 60 60 60 80 80 80
H
L 170 170 170 170 170 240 320 320
N 25.5 25.5 25.5 25.5 25.5 30 30 30
N
L Serration 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90°
B a 69 69 69 69 69 110 165 165
b 38 38 38 38 38 50 60 60
Gripping ranges c 38 38 38 38 38 50 60 60
kg / piece 3.6 3.6 3.6 3.6 3.6 11 15 15
S

A1 35-220 70-225 130-335 155-335 189-360 135-340 95-385 245-535

A1 S 590 595 720 720 740 865 1060 1210

JAWS-CATALOG
Request or
download:
www.smw-autoblok.de

360 SMW-AUTOBLOK
 BIG BORE®
■ Top jaws
■ T-nuts BB-N-ES
■ Spindle adapters INCH SERRATION

WBC-D, WBCL-D Chuck 400-140 470-191 500-205 500-230 600-275 630-325 850-375 1000-560
Soft top jaws long version BB-N-ES
Jaw type WBC-D 502 WBC-D 502 WBC-D 502 WBC-D 502 WBC-D 502 WBC-D 800 WBCL-D 800 WBCL-D 800
Id. No. (pc.) 12075140 12075140 12075140 12075140 12075140 12078040 12079040 12079040
c
b B 60 60 60 60 60 80 80 80
a
H H 60 60 60 60 60 80 80 80
L 205 205 205 205 205 320 390 390
N N 25.5 25.5 25.5 25.5 25.5 30 30 30
L
B Serration 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90° 3/32" x 90°
a 104 104 104 104 104 165 230 230
Gripping ranges b 38 38 38 38 38 60 60 60
c 38 38 38 38 38 60 60 60
S kg 4.5 4.5 4.5 4.5 4.5 15 18 18

A1 - 0-150 60-275 85-275 119-290 25-210 25-255 115-405

A1
S - 595 720 720 740 895 1070 1220

NST Chuck 400-140 470-191 500-205 500-230 600-275 630-325 850-375 1000-560
T-nuts BB-N-ES
T-nut type NST NST NST NST NST NST NST NST
Id. No. (pc.) 12065020 12065020 12065020 12065020 12065020 13063900 13063900 13063900
G N 25.5 25.5 25.5 25.5 25.5 30 30 30
H 34 34 34 34 34 44 44 44
N h 15 15 15 15 15 18 18 18
G M 20 M 20 M 20 M 20 M 20 M 24 M24 M 24
H Bolt
h M20 x 40 M20 x 40 M20 x 40 M20 x 40 M20 x 40 M24 x 60 M24 x 60 M24 x 60
ISO 4762 12.9

Spindle adapters for BIG BORE chucks

ISO-A DIN 55026
Spindle adapters
Ø
Ø

BB-N-ES 400-140/470-191 500-205/500-230 600-275 630-325 850-375 1000-560

Spindle nose A8 A11 A15 A11 A15 A20 A11 A15 A20 A11 A15 A20 A15 A20 A15 A20
Id. No. 24184020 24114020 24124020 24115030 24125020 24175020 24116020 24126020 24176020 24116320 24126320 24176320 24128020 24178020 on request
A mm 40 40 40 40 40 40 40 40 40 50 50 50 50 50
B mm 139.719 196.869 285.775 196.869 285.775 412.775 196.869 285.775 412.775 196.869 285.775 412.775 285.775 412.775 265.775 412.775
C mm 171.4 235 330.2 235 330.2 463.6 235 330.2 463.6 235 330.2 463.6 330.2 463.6 330.2 463.6
Bayonet and camlock spindle adapters are available on request.

JAWS-CATALOG
Request or

9
download:
www.smw-autoblok.de

SMW-AUTOBLOK 361