Sharktools CAT 40 ER-25 Collet Chuck, 0.04″ – 0.630″ Range – ST40ER25275B

• Premium Balanced to G6.3 at 15,000 RPM to save spindle bearing life
• Taper-to-taper runout <0.0004".
• AD coolant thru the spindle.
• Hardened to 56-60 HRC.
• Taper shank ground to AT3 accuracy (or better).
• Taper manufactured in accordance with ANSI B5.50 / ISO 7388 specifications.
• CAT 40 Draw bar threads: 5/8″-11

Includes:
Stop screw.

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