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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

Model UC2 B-Model

    • Optional master base jaws available to fit common serrated and T&G top jaws
    • Note: the High Performance jaw system of the UC2 is not available for the UC2B
    • Better for vertical lathes with O-ring seal to prevent coolant entering between drawtube and spindle bore
    • Full custom packages installed on your lathe by ATS engineers
    • Two year warranty with ATS installation
    • Supported by local ATS Service Technician through the life span of the chuck.
    • Optional High-Low hydraulic systems available
    • The Solution for Second Operation Chucking
      • Eliminate Soft Jaw Reboring
      • Save 45 minutes of changeover downtime
      • Bore jaws only once, store for weeks or months, reinstall with 0.0005" TIR guaranteed without reboring (7" to 12" chucks, 16" chuck 0.0007" TIR)

Monoblock Soft Jaws

  • Double ended - bore each end for a different part
  • Premium alloy steel - lasts much longer
  • No bolts to interfere with gripping surface
  • Quick change
  • Additional Benefits
    • Ultimate Chuck™ wedge bar design allows 25% higher spindle speeds
    • Ultimate Chuck™ maintains 65% of starting grip force at maximum rated RPM.
      • Common chucks maintain only 30% even at their lower rated RPM
Ultimate Chuck™