ER-Collet with cooling channels ER40 | 472ECC | < 15µm | Ø 14Application: For mounting straight shank tools in collet chucks DIN 6499. Note: Only nominal size d can be clamped, with cooling channels. In order to achieve an optimum sealing the tool must be clamped on the complete length of the ground drill of the collet. (applicable up to 21 bar)

Heat-treated steel

For sealing tools with internal cooling in collet chucks

Bearing edge ground

Clamping accuracy at the centre 0

Chrome vanadium steel main body

Torque range : 20-110 Nm

Low material loss

For measuring the groove diameter of shafts

Delivery with test certificate

Minimal length compensation on compression and expansion balances very small pitch differences between synchro spindle and tap

For mounting straight-shank tools

All functional surfaces fine machined