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Hex bore: smooth ≤ Ø 12
Application: For self-help with special diameters or shapes when standard collets are not suitable
mm increment mm Ø d mm Ø D mm L mm α ° 14
Hex bore: smooth ≤ Ø 10
0 < DIN (31
ER20 (428E) Kl.2 (15-20µm) Diameter in mm:9.5 Hex bore: smooth ≤ ØFeatures: ER collet according to DIN ISO 15488B class 2 (15 20m run out) Application : For clamping tools with cylindrical shanks in ER chucks according to DIN ISO 15488 (formerly DIN 6499). For clamping up to a maximum of 0. 5 mm below the nominal diameter Spring steel, hardened and ground Technical data Clamping range mm increment mm D mm L mm 1. 0 13. 0 0. 5 21. 0 31. 5