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Round hole: smooth ≤ Ø 8
square size max
Features: Emergency dead-length collet according to DIN 6343
double-serrated (radial and axial grooves)
Hex bore: smooth ≤ Ø 12
Spannzange 351E (K20) rund Diameter in mm:4.0 Round hole: smooth ≤ ØFeatures: Draw in collet according to DIN 6341. Spring steel, hardened and ground. Application: For clamping workpieces in dividing heads, grinding machines or second operation lathes. The draw in collets are closed by being drawn back into the collet seating by means of a draw bar. Technical data Clamping range mm increment mm d mm D mm L mm GA 1. 0 17. 5 0. 5 20. 0 28. 0 83. 0 20 Tr20x1. 5 Round smooth bore only the nominal size can be clamped. 0. 5