Ultimate Chuck™
To purchase, or for more information
Model UC2
High performance quick jaw change chuck for the shop running small batches
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
Model UC2 B-Model
Model UC2B allows using existing custom wide top jaws
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 Dimensions
NOMINAL CHUCK SIZE | 7” | 8” | 10” | 12” | 16” | 20” | 25” | |
---|---|---|---|---|---|---|---|---|
Model UC2 | 180-53 | 215-66 | 260-81 | 315-104 | 400-128 | 500-155 | 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 |