Skip to content
See Our Machine Tool Accessories and Solutions

ULTIMATE CHUCKS

Ultimate Chuck™

Ultimate Chuck

High performance quick jaw change chuck for the shop running small batches

  • The Solution for First Operation Chucking
    • A few sets of jaws quickly adjust to cover a wide diameter range
    • Change, adjust or reverse all three jaws in one minute
    • 1/4 turn wrench, no T-nuts or bolts
    • Adjust hard jaws in and out to any diameter
    • Only three sets of "Deep Bite Job Shop" hard jaws cover full grip range OD and ID
      • Stop using inadequate grip soft jaws for roughing operations
      • "Deep Bite Job Shop Jaws" transmit torque for maximum metal removal

Ultimate Chuck Models & Specifications

NOMINAL CHUCK SIZE   7” 8” 10” 12” 16”
UC3   UC3-180-53 UC3-215-66 UC3-260-81 UC3-315-104 UC3-400-128
Chuck Outside Diameter A 7.09 8.46 10.24 12.40 15.75
Through-hole B 2.09 2.60 3.19 4.09 5.04
Chuck O.A.L. (No Plate) C 3.70 4.07 4.71 5.03 5.36
Plain Back Register   140mm  170mm 220mm  300mm 300mm
Mount Spindle Sizes   A5, A6 A6, A8 A6, A8 A8, A11 A11, A15
Max. thread with adapter D M60 M75 M90 M110 M138
Piston Stroke - Max   0.906 1.063 1.260 1.260 1.336
Stroke Per Jaw - Max.   0.267 0.276 0.315 0.315 0.336
Jaw Adjustment Pitch   0.19 0.19 0.22 0.22 0.22
Drawbar Pull - Max. lbs. 7,193 10,565 14,162 20,232 26,976
Total Grip Force lbs. 14,387 22,480 30,348 40,464 53,954
TIR   0.00059 0.00059 0.00059 0.00078 0.00078
Max RPM - UC3   6,300 6,000 4,700 4,000 3,500
Weight Without Jaws & Plate lbs. 28 46 54 126 238