BH-D
High precision power chuck Ø 500 - 800 mm
Big diameters INCH SERRATION
■ Large through-hole ■ 3 jaws
Application/customer benefits • For open center or partial open center clamping • Large through-hole BH-D: Master jaws with INCH SERRATION 3/32”x 90° Technical features • Gripping force transmission via wedge hook Standard equipment
Ordering example 3-jaw chuck BH-D 500 / A15
3-jaw chuck
1 set T-nuts with bolts 1 set soft top jaws
or
3-jaw chuck BH-D 800 / Z520
Blank ring-nut Mounting bolts
Actual gripping force diagram
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 diagram refers 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.
120 100 140 160 180 220 200 240
800
630
500
80 60 40 20
F G
F
0
500
1000
1500
2000
Speed (r.p.m.)
Technical data
BH-D 500
BH-D 630
BH-D 800
SMW-AUTOBLOK Type Number of jaws Through-hole
3
3
3
mm mm mm
180
230
230
Radial jaw stroke Axial piston stroke Max. draw pull* Max. gripping force*
6.5
9
9
31 70
34
34
kN kN
100 240
100 240
210
Max. speed
r.p.m.
1800
1500
1200
kg
140
280
530
Weight (without top jaws)
Moment of inertia
kg·m 2
5
16
47
Recommended actuating cylinders
SIN-S 150 / 200 VSG 450-165
SIN-S 150 / 200 VSG 550-205
SIN-S 150 / 200 VSG 550-205
Id. No. BH-D 3 jaws (Center mounting) * For internal clamping reduce the draw pull by 30%.
77152750
77152763
77152780
SMW-AUTOBLOK 470
SMW-AUTOBLOK 472
SMW-AUTOBLOK 335
104 SMW-AUTOBLOK
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