ER Clamping Nut High Speed, for ER: 40 (Discontinued)

Thread and taper ground in a single setup for highest concentricity. Nut coated for: lower friction and increased clamping force coupled with high wear resistance and corrosion resistance. With slots. Suitable for: All standard ER collet chucks. Optional extras: ER clamping wrench, No. 309680 309740. Single open ended wrench for size 16, No. 613300 size 25. Note: Collet chuck and clamping nut are balanced separately! Balance quality G at rotational speed: G 2.5 at 25-000 rpm Overall length L: 26 mm External Dia D: 63 mm Thread: M50x1.5 maximum tightening torque: 240 Nm