ER20 (428E) übergroß Standard Kl.2 (15-20µm) 450e Square bore: smooth ≤ Ø

Square bore: smooth ≤ Ø 11

increment mm Ø d mm Ø D mm L mm α ° 42

Clamping range mm increment mm Ø D mm L mm 4

5 30 65 20 8

increment mm Ø d mm Ø D mm L mm α ° 22

ER20 (428E) übergroß Standard Kl.2 (15-20µm) 450e Square bore: smooth ≤ ØFeatures: Oversized collet similar 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. 1 mm below the nominal diameter Length L < DIN (shortened clamping length) Spring steel, hardened and ground Technical data Clamping range mm increment mm D mm L mm 13. 5 16. 0 0. 5 21. 0 < DIN (31. 5)