• 12.00” (300mm) chuck diameter
  • 3 jaw and 2 jaw models
  • QC precision change jaw system
  • Standard and long stroke models
  • 4.17” (106mm) through hole
  • Precision fit master jaws to minimize jaw lift
  • Hardened chuck body, actuators, and master jaws, for long term accuracy and performance
Repeating Accuracy
  • .0002” (0.005mm) TIR
Unit of Measure

Item No.

N/A 14 512 005
Accuracy1 N/A .0002 in0.005 mm

No. of Jaws

N/A 3

Through Hole

N/A 4.170 in106 mm
Jaw Stroke2 N/A .250 in6.3 mm

Actuator Stroke

N/A .710 in18.0 mm

Max Draw Tube Force

N/A 8,270 lbs36.8 kN

Min. Draw Tube Force

N/A 750 lbf3.3 kN
Max. Clamp Force3 N/A 21,580 lbs95.9 kN
Max Speed4 N/A 2,800 rpm
Chuck Weight5 N/A 100.8 lb45.7 kg
Moment of Inertia6 N/A 14.5 lb-ft²0.61 kg-m²


  • Blank draw tube adapter
  • Blank top jaws, chuck lubricant, and grease guns are sold separately.

  • N/A

  • Threaded draw tube adapters are furnished on request
  • A2-8, A2-11 as well as other spindle mounting plates are available on request.

    • 1 Accuracy is the total indicator reading (radial and lateral runout) of a master gage measured 1.00” (25.4mm) from the top face of the standard top jaw at 1/2 max draw tube force.
    • 2 Total jaw stroke.
    • 3 Total clamping force.
    • 4 Maximum speed with standard top jaw at max draw tube force.
    • 5 Without top jaws and spindle mounting plate.
    • 6 Without top jaws and spindle mounting plate.