ER Collet Chucks

Double tapered shape and multiple slots contribute to excellent concentricity and even gripping. Applicable for wide range of machine tools including chuck milling machines, machining centers, NC lathes, tool grinders, and drilling machines.
Multi-collet with large margin, maximum of 1mm, is economical and saves your collet stocks.

Options for ER collets

M nut: Smaller external dimension we designed is suitable for preventing interfering with a tool.
品番: Product number, 締付トルク: Tightening torque, 互換性のある他社の製品:Product number for compatible products, R社:Company R, A社: Company A

Wrench for M nut
品番: Product number, 適用ナット: Applicable nut, 互換性のある他社の製品:Product number for compatible products, R社:Company R, A社: Company A

S nut: For drill holder in tool clamping etc..
品番: Product number, 締付トルク: Tightening torque, 互換性のある他社の製品:Product number for compatible products, R社:Company R, A社: Company A

  1. Conformed to DIN6499, standard nut for NC Automatic Lathes such as CITIZEN, STAR, Miyano, and TSUGAMI, suitable for drill holders and rotary tools.
  2. Nuts are consumables and they run out. We recommend regular exchange.
  3. Defects in tapered part and wear of the threaded part cause approx. 30% of the center runout. Exchange nut before you even try to purchase expensive AR/RE collets.
  4. Tighten with gentle power than specified torque when using nut. M nut is, especially, thin-walled and hardening penetration is low. Tightening with exceeding torque specified may cause breakage.