Precise 10″ Dia. 3 Jaw Plain Back Zero-Set Self Centering Lathe Chuck – 3900-4580

• Run true “0” set.
• Made of high grade tool steel.
• Hardened and ground to the highest T.I.R. with 0.0005″ repeatability on duplicate parts.
• 2 piece top master jaws are American Standard tongue groove.
• 2 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 – Plain Back
• D1: 6.374
• D2: 4.375
• D3: 2.835
• H: 6.06
• H1: 3.49
• h: 0.803
• Z-D: 7/16-14
• Max. RPM: 2,700
• Weight: 70 lbs.

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