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Quick Change Jaw Power Chuck

Application

The power chuck attached to the spindle nose of a lathe is
actuated by a rotating hydraulic cylinder, its function is to
generate a gripping force to hold the workpiece to be
machined from the axial force generated by the actuating
cylinder. The power chuck is actuated by an axial movement
of the cylinder piston – transmitted by a draw tube (partly
open center or open center chucking) – to the chuck piston
of the chuck and is transmitted by the surfaces of the wedge
hook mechanism in the chuck piston to the correspondingly
shaped wedge guides in the master jaws which engage
during the gripping process.

drawing

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parameters
QPC175/3 QPC210/3 QPC250/3 QPC310/3 QPC400/3 QPC500/3 QPC630/3
Quter diameter A mm 180 206 257 315 400 500 630
Bore B mm 42 45 72 82 92 125 125
Chuck
mounting/Mounti
ng recess
C/E mm Z5/140 Z6/170 Z8/220 Z11/300 Z11/300 15/380 15/380
Jaw mounting D F160 F200 F250 F250 F315 F400 F400
Pitch of serration T 4,8 4,8 6,0 6,0 7,0 8,5 8,5
Actuator F mm 90 106 140 150 192 230 230
Mounting bolts G M10 M12 M16 M20 M20 M24 M24
Thread mounting G1 M50x2 M52x2 M80x2 M92x20 M100x2 M135x2 M135x2
Chuck width H mm 78 83 100 100 127 138 138
Thread length J1 mm 22 22 28 28 28 28 28
Thread length J3 mm 15 18 24 30 30 36 36
Actuator stroke K mm 20 20 23 23 28 33 33
Pitch circle L mm 104/8 133,4 171,4 235,0 235,0 330,2 330,2
Jaw stroke M mm 7,2 7,2 8,3 8,3 10,0 12,0 12,0
Jaw width Q mm 20 22 26 26 32 45 45
Mounting recess P mm 51 53 81 94 102 136 136
Width R mm 6 6 6 6 6 6 6
Weight G kg 11 15 24 37 68 115 200
Max.actuating Fma KN 300 450 600 600 1000 1200 1200
Max.gripping force Fma KN 550 840 1200 1200 1950 2400 2400
Max.speed rpm 7.000 6.300 4.500 4.500 3.300 2.200 1.700