ER-Collet chuck SK 30 - 2/13 - 70 | ER 20Application: For mounting straight shank tools in collets. Delivery: With balanced clamping nut All holders are made of forged steel Specific, low warpage hardened Surface hardened HRC 58~60 Hardening depth 0,8mm~0,9mm Taper angle tolerance < AT 3 according to DIN 2080 Surface roughness Ra < 0,4 m Tensile strength in the core of min. 800 N mm after DIN All functional surfaces fine machined

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance1

Surface roughness Ra < 0

Ring gauge accuracy according to DIN 2250Delivery:

Instruction manual

- After mounting

For mounting straight-shank tools in collet chucks ISO 15488 (ex

- Honed collet boring

Sprayer nozzles for cooling by VDI toolholders

Only nominal size d can be clamped with sealing plug for internal cooling (applicable up to 21 bar) In order to achieve an optimum sealing the tool must be clamped on the complete length of the ground drill of the collet

Spray nozzle can be closed

For mounting straight-shank tools in collets according to ISO 10897 (formerly DIN 6388) OZ

Coolant pressure up to 100 bar