BH-D
High precision power chuck Ø 130 - 450 mm
■ Large through-hole ■ 2, 3 and 4 jaws
INCH SERRATION
Application/customer benefits • For open center or partial open center clamping • Large through-hole BH-D: Master jaws with INCH SERRATION (1/16” x 90°) (400 and 450 3/32“ x 90°) Technical features • Gripping force transmission via wedge hook • Case hardened body to assure greatest precision and long chuck life
• 2-jaw version from diameter 130 to 315 • 3-jaw version available in all diameters • 4-jaw chuck available starting from diameter 165 mm Standard equipment
Ordering example 2-jaw chuck BH-D 210 / A6
2-, 3- or 4-jaw chuck 1 set T-nuts with bolts 1 set soft top jaws Mounting bolts
or
3-jaw chuck BH-D 250 / A8
Actual gripping force diagrams
110
120 100 140 160 180 210 200
100
90
70 80
60
450
210
400
50 40
315 320
80 60 40 20
250
F G
165
F G
30
130
F
20
F
10
0
1000
2000
3000
4000
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 K67 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.
Technical data SMW-AUTOBLOK Type Number of jaws Through-hole
BH-D 130 BH-D 165
BH-D 210
BH-D 250
BH-D 315
BH-D 320 BH-D 400 BH-D 450
23234234234234
3
3 4 3 4
mm mm mm
32
46
52
66
95
103
118
118
Radial jaw stroke Axial piston stroke Max. draw pull* Max. gripping force*
3.2
3.2
4
5
5
5
6.5
6.5
15
15
19
24
24
24
31
31
kN kN
15 22 17 25 25 25 38 38 34 50 50 40 60 60
60
70 70 70 70
42 60 48 70 70 72 110 110 98 145 145 115 175 175
175
210 210 210 210
Max. speed
r.p.m.
7000 7000 6000 6000 5000 5000 5000 4300 4000 4000 3400 3200 3200 2700
3200
2500 2000 2000 1700
kg
Weight (without top jaws)
5
9.5
19
30
46
52
86
135
Moment of inertia
kg·m 2
0.012
0.036
0.12
0.27
0.62
0.72
2
3.5
Recommended actuating cylinders
SIN-S 85 / 100 VNK-T2 70-37
SIN-S 100
SIN-S 100 / 125 SIN-S 125 / 150 SIN-S 125 / 150 SIN-S 125 / 150
SIN-S 150 / 175
VNK-T2 250-110
VNK-T2 102-46 VNK-T2 130-52 VNK-T2 150-67 VNK-T2 225-95
VNK-T2 320-127
Id. No. BH-D 2 jaws ( Center mounting ) Id. No. BH-D 3 jaws ( Center mounting ) Id. No. BH-D 4 jaws ( Center mounting )
77152513 77157916 77152713 77158016
77157921 77158021 77158121
77152525 77152725 77152925
77152531
-
-
-
77152731 77152732 77152740 77152745
-
77158116
77152931
-
77152940 77152945
* For internal clamping reduce the draw pull by 30%.
SMW-AUTOBLOK 466
SMW-AUTOBLOK 468
SMW-AUTOBLOK 325
100 SMW-AUTOBLOK
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