Precise8″ Plain Back Zero-Set Self-Centering Lathe Chuck – 3900-4561

• Run true “0” set.
• Hardened and ground to the highest T.I.R. with 0.0005″ repeatability on duplicate parts.
• 3 piece top jaws can be reversed for clamping and jamming.
• Provides increased gripping force with less jaw distortion.
• Opposing adjusting screws for “dead true” accuracy.
• Fine adjustment.
• Semi-steel body.
• Chuck body is made of high quality cast iron.
• All guide ways and bearing surfaces are precisely machined.
• Scroll plate is drop forged of fine alloy steel and carefully case hardened.
• Thread flanks are ground on both sides.
• The jaws teeth and guide ways are hardened and fully ground on both sides.
• Pinions are also hardened and ground.
• 6 M10 mounting screws are included.
• Shipping Weight: 48 lbs

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