High Precision CAT40 ER40 4″ Collet Chuck Tool Holder G2.5 25000rpm

Use:– CAT40 ER40 4 ” For all CAT40 Spindle Machine

Finishing & Rough Cutting:– High-Speed Cutting (G2.5 25000rpm) Balance Available

Precision:–  High Precision Runout: TIR  3μm or 0.00015 ”

Hardened:– Outside: HRC58  Inside: HRC45, Neck ： HRC45

Gage length: 4 ”

Rear Thread:5/8-11

For all ER40 collet 

Protection:– Silver Ni Coated  (will never rusty ever）