TOLL FREE 888-869-2424

MK4 3-JAW SELF-CENTERING SELF-CONTAINED AIR CHUCKS

MK4 3-Jaw Self-Contained Air Power Chucks & Accessories 
 
  • One-year warranty
  • Precision manufactured to fit types A and D spindles and adapter mounting
  • Repetitive gripping within .001" TIR
  • Safe, Chuck operates independently of air supply when gripping
  • No separate actuating cylinder
  • No draw tube to restrict thru-hole
  • Sizes 61/2", 8", 10", 12", and 14"
  • Suitable for chucking or bar work
  • Less overhang. Lighter in weight
  • Minimum maintenance
  • Quick, simple Lever or Foot Pedal Operation
  • Easy installation
  • Optional top jaws 
  • 1.5 MM" x 60° serrated master jaws standard with T-nut

Lever Control Unit - Part Number 1157-12800
Foot Pedal Control Unit - Part Number 1157-12801 (Not Shown)

This unit is essential in order to operate MK3 Self-Contained Power Chucks. It is designed to be interlocked with the machine spindle so that the chuck cannot be actuated while the spindle is under power. Care must be taken not to actuate the chuck while the spindle is decelerating. Units are supplied complete with pressure gage, pressure regulator, oil mist lubricator, air filter and lines with fittings. Unit is operated by air and 110 volt/60 cycle (24 volt DC on request).
Top Jaws for MK3 Self-Contained Chucks — 1/16" x 90º Serrations


Type 611 - Hardened and ground reversible jaws with serrated gripping faces. (Supplied in sets of 3 for 3 jaw chucks only)
Type 612 - Soft blank jaws, case hardening quality steel. (Supplied as single units only)
Dimensional Data
Chuck Size Jaw Type Part Number A B C D F Bolt Size Step Height
6-1⁄2" 611 8130-17611 2.56" 1.56" 1.18" .475" .67" M8 .39"
6-1⁄2" 612 8140-17512 2.75" 1.50" 1.25" .475" .787" M8 -
8"/10" 611 8130-21611 3.00" 1.97" 1.57" .670" .75" M12 .47"
8"/10" 612 2860-21512 3.50" 2.00" 1.50" .670" 1.00" M12 -
12"/14" 611 8130-31611 4.92" "2.36" 2.36" .830" 1.25" M16 .55"
12"/14" 612 2860-32512 4.50" 2.50" 2.00" .830" 1.25" M16 -




 

PRATT BURNERD POWER CHUCK INDEX
PRATT BURNERD MANUAL CHUCK INDEX
HOME

OTHER WORKHOLDING RELATED WEBSITES:

WWW.J-LOC.COM

 QUICK CHANGE CHUCK JAWS,  QUICK CHANGE MILL VISE JAWS AND EXPANDING MANDREL COLLETS
WWW.WORKHOLDING.COM MANUAL AND POWER CHUCKS, COLLET CHUCKS, VISES, TOOLING COLUMNS AND MORE!
WWW.ECOLLETCHUCKS.COM WEBSITE DEVOTED ENTIRELY TO COLLETS AND COLLET CHUCKS
WWW.FINDCENTERS.COM WEBSITE DEVOTED ENTIRELY TO LIVE AND DEAD CENTERS
WWW.MILLVISES.COM WEBSITE DETICATED TO PRECISION MILL VISES