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    12 2155 Traversefield Dr Traverse City, MI 49686 WWW.BUCKCHUCKUSA.COM 1-800-228-BUCK WARNING: Since chuck performance depends on a wide range of variables beyond the control of BUCK CHUCK COMPANY, we recommend that each chuck application be careful-ly evaluated under your production conditions. ...

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    2 Table of Contents Parts Breakdown…………………………3 Safety Information……………………… 4 Suggestions for Operation……………… 5 Chuck Specifications…………………… 6 How to Change Jaws…………………….7 Master Jaw Specifications……………...

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    10 Jaw Clamping Force and Torque Specifications Chuck Size Max Pinion Torque (ft. lbs.) Jaw Force Per Jaw (3-Jaw) (lbs.) Jaw Force Per Jaw (6-Jaw) (lbs.) Chuck Mounting Bolt Size Tightening Torque ( ft. lb.) Jaw Mount-ing Bolt Size Tightening Torque (ft. lb.) 6” 20 380 255 1/4”-20 1...

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    4 Safety Information Please read and keep this manual for future reference To ensure the safe and correct use of this product, please read and pay close attention to all instructions. Indicates an imminently hazardous situation which will result in serious injury or death. 1. Always disconnect ...

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    8 Chuck Size TJ-37 TJ-38 TJ-40 TJ-41 TJ-42 TJ-81 Max Min TJ-83 Max Min TJ-85 Max Min TJ-86 Max Min TJ-43 TJ-85 Max Min 6” 1.078 1.406 0.765 1.00 0.500 2.438 0.125 6.000 3.625 4.125 1.750 6.125 3.750 0.313 4.000 1.625 8.25” 1.656 1.875 0.750 1.50 0.625 2.875 ...

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    6 Dimensional Specifications Chuck Size A B C D E F G H J K L N Max RPM 3-Jaw 6-Jaw Wt. 3-Jaw 6-Jaw 6” 6.00 2.32 3.13 5.34 1.54 0.69 (6) 1/4-20 2.58 1.00 1.56 0.31 (4) 1/2-20 3400 2500 16 25...

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