Precise Precision Chuck with Adapter, 3″ Size, 3-Jaw Chuck, R8 Shank – 202-445

3 Jaw Chuck

• Self centering 0.003″TIR.
• It has a set of inside jaws and a set of outside

Features:

• R8 arbor allow to use the chuck in horizontal or vertical position
• Self Centering lathe chuck will open and close all 3 jaws simultaneously
• Semi-steel chuck body made from high quality cast iron
• 3 pinion available around the chuck body to allow easy access for the lathe chuck key to open or close the jaws
• Each pinion is ground and hardened to HRC 43
• Both sides of the jaw teeth and guides are ground and hardened to HRC 58-62
• Each set of jaws are serialized in their own set
• A serialized set of jaws are then finished, ground, and lapped on their designated chuck body which will be the same chuck body on the final assembly to achieve a greater accuracy
• Before assembling the jaws to its designated chuck body, the jaws finish machining is performed on a close tolerance state of the art CNC machine from Japan
• The scroll plate’s thread flank are ground on both sides to achieve tighter contact with the master jaw
• Each chuck has gone through rigorous accuracy and repeatability inspection by clamping and jamming multiple random testing rods or rings

Accuracy is maintained for the entire clamping range

Internal Jaw:

• Clamping Range A-A1:0.079 – 0.866″
• Jamming Range B-B1:0.984 – 2.756″

External Jaw:

• Clamping Range C-C1:0.866 – 2.480″

Chuck Center Hole: 0.630″
Chuck Body Thickness: 1.969″
Runout: 0.003″

Included:

• One set of inside jaws (3 pcs per set) for internal holding
• One set of outside jaws (3 pcs per set) for external holding
• Lathe chuck key

Specifications:

See all Precise Precision Chucks with Adapter