ULTIMATE CHUCKS
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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” | 20” | 25” | |
---|---|---|---|---|---|---|---|---|
UC3-180-53 | UC3-215-66 | UC3-260-81 | UC3-315-104 | UC3-400-128 | UC2-500-155 | UC2-630-167 | ||
Chuck outside diameter | A | 7.09 | 8.46 | 10.24 | 12.40 | 15.75 | 19.69 | 24.80 |
Through hole | B | 2.09 | 2.59 | 3.18 | 4.00 | 5.04 | 6.10 | 6.57 |
C | 4.13 | 4.68 | 5.43 | 5.75 | 6.14 | 7.08 | 7.07 | |
(UC2B) C | 5.89 | 5.89 | 7.24 | 7.19 | ||||
Direct mount spindle sizes | A5, A6 | A6, A8 | A6, A8 | A8, A11 | A11, A15 | A11, A15 | Z-520 | |
Max. thread with adapter | D | M60 | M75 | M90 | M100 | M138 | M170 | M180 |
E max | 1.63 | 1.93 | 2.04 | 2.54 | 3.40 | 3.97 | 4.74 | |
F | 2.56 | 3.35 | 4.09 | 4.52 | 4.92 | 6.29 | 7.87 | |
(UC2B) F | 4.72 | 5.83 | 6.53 | 7.99 | ||||
Piston stroke - max | 0.83 | 0.94 | 1.10 | 1.10 | 1.18 | 1.38 | 1.57 | |
Stroke per jaw - max. | 0.27 | 0.30 | 0.35 | 0.36 | 0.39 | 0.45 | 0.50 | |
Stroke per jaw with most commoncylinder stoke* | *see note | 0.23 | 0.28 | 0.31 | 0.30 | 0.30 | 0.45 | 0.43 |
Jaw adjustment pitch | 0.19 | 0.19 | 0.22 | 0.22 | 0.22 | 0.28 | 0.28 | |
Drawbar pull - max. | lbs. | 7,400 | 11,900 | 16,410 | 22,480 | 29,900 | 39,000 | 39,000 |
Total grip force | lbs. | 13,480 | 22,480 | 30,350 | 40,466 | 53,954 | 68,000 | 68,000 |
Max RPM - UC2 | 6,300 | 6,000 | 4,700 | 4,000 | 3,500 | 2,200 | 1,700 | |
Max RPM - UC2B | 2,800 | 2,450 | 1,400 | 1,000 | ||||
Weight without jaws | lbs. | 39 | 54 | 110 | 161 | 269 | 518 | 926 |
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
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