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QCS WORKHOLDING LLC
18611 WEST WINDHAVEN TERRACE TRAIL
CYPRESS TEXAS 77433
888-869-2424
AUTHORIZED PRATT BURNERD/ATLAS DISTRIBUTOR
PRATT BURNERD/ATLAS 4-JAW INDEPENDENT VTL CHUCKS

Sizes 24″ to 120″
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Forged Steel Body
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2 Piece American Standard Master & Hard Top Jaws
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Hardened Operating Screws and Thrust Bearings
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Reduced Maintenance
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Master Jaw Wiper Blade
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Extra Length Master Jaws for internal Chuck component protection
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Thru-Hole Cover Plate
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Custom T-Slots available
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Available in straight recess, A Type Spindles or Custom Mounting
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Larger sizes are available, consult the factory for special quotations
Chuck Size | Recess Mount | A Mount | Part Number | Max. rpm | Min. Clamping | Approx. Weight |
|---|---|---|---|---|---|---|
600/23.6 | 2443-2000VTL | A-8 | 2443-2A8VTL | 970 | 180/7.08 | 530 lbs |
600/23.6 | A-11 | 2443-2A11VTL | 970 | 180/7.08 | 530 lbs | |
700/27.5 | 2843-2000VTL | A-8 | 2843-2A8VTL | 873 | 180/7.08 | 838 lbs |
700/27.5 | A-11 | 2843-2A11VTL | 873 | 180/7.08 | 838 lbs | |
800/31.5 | 3243-2000VTL | A-11 | 3243-2A11VTL | 764 | 180/7.08 | 1125 lbs |
800/31.5 | A-15 | 3243-2A15VTL | 764 | 180/7.08 | 1125 lbs | |
900/35.5 | 3643-2000VTL | A-11 | 3643-2A11VTL | 679 | 180/7.08 | 1380 lbs |
900/35.5 | A-15 | 3643-2A15VTL | 679 | 180/7.08 | 1380 lbs | |
1000/39.4 | 4043-2000VTL | A-11 | 4043-2A11VTL | 611 | 200/7.87 | 1874 lbs |

Size A | B | C | D | H | F | J | L | T-Slot | M |
|---|---|---|---|---|---|---|---|---|---|
(mm/inch) | |||||||||
600/23.6 | 135/5.31 | 235/9.25 | 300/11.81 | 8xM20 | 74/2.91 | 130/5.12 | 60/2.36 | 4x22/.866 | 40/1.575 |
700/27.5 | 135/5.31 | 235/9.25 | 300/11.81 | 8xM20 | 74/2.91 | 130/5.12 | 60/2.36 | 4x22/.866 | 40/1.575 |
800/31.5 | 135/5.31 | 330/12.99 | 380/14.96 | 8xM24 | 74/2.91 | 130/5.12 | 60/2.36 | 4x22/.866 | 40/1.575 |
900/35.4 | 135/5.31 | 330/12.99 | 380/14.96 | 8xM24 | 74/2.91 | 130/5.12 | 60/2.36 | 4x22/.866 | 40/1.575 |
1000/39.4 | 150/5.90 | 330/12.99 | 380/14.96 | 8xM24 | 78/3.07 | 130/5.12 | 75/2.95 | 4x22/.866 | 50/1.968 |
1200/47 | 160/6.30 | 463.6/18.25 | 520/20.47 | 8xM24 | 78/3.07 | 130/5.12 | 75/2.95 | 4x22/.866 | 50/1.968 |
1400/55 | 170/6.69 | 463.6/18.25 | 520/20.47 | 8xM24 | 78/3.07 | 130/5.12 | 75/2.95 | 4x22/.866 | 50/1.968 |
1500/59 | 175/6.89 | 647.6/25.50 | 720/28.35 | 8xM30 | 78/3.07 | 130/5.12 | 75/2.95 | 4x22/.866 | 50/1.968 |
1600/63 | 185/7.28 | 647.6/25.50 | 720/28.35 | 8xM30 | 102/4.01 | 180/7.09 | 90/3.54 | 4x28/1.10 | 64/2.519 |
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