KNCS ® -NB
QUICK JAW CHANGE Wide master jaws
■ Main dimensions and technical data Actual gripping force diagrams
120 100 160 140 200 180 240 220 260
180
160
140
325-104 340-117
500-155
120
630-165
400-128
800-165
100
260-78
80
210-52
80 60 40 20
60
FG
F G
3
40
225-66
F
F
20
0 500
1500 2000
3000 3500
1000
2500
0 1000 2000 3000 4000 5000 6000 7000
Speed (r.p.m.)
Speed (r.p.m.)
Safety advice / danger of damage: When using taller / heavier jaws and / or clamping on a bigger diameter reduce draw pull / rotating speed accordingly.
The data in the diagrams refer to 3-jaw chucks, newly maintained according to their service manuals using SMW-AUTOBLOK K05 grease. The static and dynamic gripping forces have been measured using standard soft top jaws, placed in a position not exceeding the outer diameter of the chuck.
SMW-AUTOBLOK Type Mounting
KNCS-NB 340-117 KNCS-NB 400-128 KNCS-NB 500-155 KNCS-NB 630-165KNCS-NB 800-165 Z300 A8* A11 Z300 Z380 A11 A15 Z300 Z380 A11 A15 Z380 A11* A15 Z520 A15* A20 A 340 400 500 630 800 B 130 160 151 140 140 161 163 174 174 195 197 174 214 197 174 214 199 D H6 300 139.73 196.88 300 380 196.88 285.77 300 380 196.88 285.77 380 196.88 285.77 520 285.77 412.8 E 270 330 420 420 / 585 420 / 585 / 750 F 160 180 207 217 217 G1 M125 x 2 / 22 M138 x 2 / 22 M165 x 2 / 25 M175 x 2 / 25 M175 x 2 / 25 G2 M146 x 2 / 25 M160 x 2 / 25 M185 x 2 / 28 M195 x 2 / 28 M195 x 2 / 28 K 25 32 42 42 42 L 28 58 49 32 32 53 55 42 42 63 65 42 82 65 42 82 67 M 117 128 155 165 165 N 235 171.4 235 235 330.2 235 330.2 235 330.2 235 330.2 330.2 235* 330.2 463.6 330.2* 463.6 O M20 M16 M20 M20 M24 M20 M24 M20 M24 M20 M24 M24 M20* M24 M24 M24* M24 P 140 152 180 195 195 Q 380 455 554 650 817 R1 M10 / 16 M12 / 18 M16 / 25 M16 / 25 M16 / 25 R2 M10 / 16 M12 / 18 M12 / 18 M12 / 18 M12 / 18 S 6 8 8 8 8 a 50 50 62 75 75 - 5.5 5.5 7 7 7 r 49.5 60.5 77 91 91 9 11 11 13 13 60 / 35 60 / 35 20 / 9 x 40 20 / 9 x 40 20 / 9 x 40 60 / 35 60 / 35 20 / 9 x 40 20 / 9 x 40 20 / 9 x 40 7.0 25 8.0 32 10.0 42 10.0 42 10.0 42 95 115 120 120 120 teeth deg. deg. mm kN Size
Threaded ring / depth Piston thread / depth Piston stroke Max.
Fixing bolt circle Fixing bolt
Thread / thread depth Thread / thread depth
Base jaw tooth pitch Base jaw offset Number of teeth
α β
Stroke per jaw at piston stroke K max. Max. actuating force 3-jaw chuck Max. total gripping force 3-jaw chuck
180
240
250
250
250
kN
Max. speed 3-jaw chuck
3300 1200 77 88.5 82.5 111 111 116 116 225 225 231 231 390 411 398 620 660 635 1.24 2.5 6.5 18 27 SIN-S 150 / 175 / 200 SIN-S 175 / 200 SIN-S 175 / 200 SIN-S 175 / 200 SIN-S 175 / 200 VNK-T2 320-127 VNK-T2 320-127 VSG 450-165 VSG 450-165 VSG 450-165 2750 1800 1500
r.p.m.
Weight without jaws Moment of inertia
kg
kg·m 2
Rec. closed center cylinder Rec. open center cylinder
Type Type
* Indirect mounting by reducing flange.
Request or download: www.smw-autoblok.de JAWS-CATALOG
BASE JAWS
SMW-AUTOBLOK 466
SMW-AUTOBLOK 325
SMW-AUTOBLOK 158
SMW-AUTOBLOK 468
SMW-AUTOBLOK 157
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