BP-C
High precision power chuck Ø 220 - 320 mm ■ Large through-hole ■ 3 jaws ■ proofline ® chucks = fully sealed - low maintenance Application/customer benefits • General use on standard lathes due to the through-hole, but with advantage of minimum maintenance and use also in extreme environments • Longer life at high precision due to less wear • Fully sealed, ideal for dry machining of castings and forgings or if high pressure coolant is used BP-C: TONGUE & GROOVE master jaws (American Standard) Technical features
TONGUE & GROOVE
• Constant gripping force with permanent grease lubrication • Large through-hole compatible with the standard machines • 3-jaw version available in all diameters • Proofline ® chucks = fully sealed - low maintenance Standard equipment
Ordering example 3-jaw chuck BP-C 220 / Z170
3-jaw chuck
s
Mounting bolts
a l e
m a i
Actual gripping force diagram
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.
110 100 130 120 150 140 170 160 175
320
260
60 50 40 30 20 10 70 80 90
Safety advice / danger of damage: When using taller / heavier jaws and / or clamping on a bigger diameter reduce draw pull / rotating speed accordingly.
220
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500
Speed (r.p.m.)
Technical data SMW-AUTOBLOK Type Number of jaws Through-hole
BP-C 220
BP-C 260
BP-C 320
3
3
3
mm mm mm
52
66
95
4
5
5
Radial jaw stroke Axial piston stroke Max. actuation force* Max. gripping force*
16 44
19 60
19 68
kN kN
110
150
175
5500
4500
3500
Max. speed
r.p.m.
22
35
59
Weight (without top jaws)
kg
0.14
0.34
0.85
Moment of inertia
kg·m 2
SIN-S 100 / 125 VNK-T2 130-52
SIN-S 125 / 150 VNK-T2 150-67
SIN-S 125 / 150 VNK-T2 225-95
Recommended actuating cylinders without hole Recommended actuating cylinders with hole
77189322
77189326
77189332
Id. No. BP-C 3 jaws (Center mounting)
* For internal clamping reduce the draw pull by 30%.
SMW-AUTOBLOK 466
SMW-AUTOBLOK 468
SMW-AUTOBLOK 325
110 SMW-AUTOBLOK
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