ER Collet Nut – Multiple Types Available We supply full range ER collet nuts for CNC spindles & milling holders. 7 types for your selection: Type-A, Type-OZ, Type-UM, Type-M, Type-GER, Type-MS, Type-SK.

✅ Factory direct supply, competitive price

✅ High precision alloy steel, quenched treatment

✅ High balance grade G2.5 for high speed operation

✅ Multiple sizes: ER11, ER16, ER20, ER25, ER32, ER40

✅ OEM & ODM custom service available, support drawing customization

Material: 40Cr Alloy Steel Surface: Black Oxide

Polished Balance: G2.5

Application:With spindle tool holder,For CNC machining centers, CNC lathes, high-speed spindles, engraving machines, mold processing, metal and wood cutting.

Our Advantage We are professional manufacturer of CNC spindle accessories. Strict quality control before delivery. If you have special requirements, please send us your technical drawing for custom production.

Multi-type ER collet nuts: Type A, OZ, UM, M, GER, MS, SK. Alloy steel high precision CNC spindle nuts, factory supply with custom service.