ER-Collet chuck BT 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

dust or oil

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance5

For clamping nuts KPS-system

clamping depth = 58

Parallels are widely used as a tool for tensioning and positioning

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

Direction & Accuracy : C

For mounting straight-shank tools in 2 µm-collets

For individual combination of T-bolts in conjunction with T-nuts and tenons

One turning toolholder - four possibilities:

thin thread and pitch diameter oversize