DIN6499-D&E ER NUT
1.Material:spring steel
2.Type: A,M,UM/RD,KM/RD
3.Model:ER11,ER16,ER20,ER25,ER32,ER40,ER50

Mounting instruction for ER collets and nuts
1.Put the collet into the nut,turn the collet slightly,push it into the nut at the offered direction evenly when the offset flange sinks into the undercut of the collet
2.Fix the nut and the collet on the spindle rotate the nut until the collet in pressing.Wipe the straight shank of cotter,and instert it into the pilot hole.Tighten the nut with a wrench till the cutter is clamped heavily(Caution:never tighten the nut wither in it for it will break)
3.When changing the tool,loosen the nut and it shall bring out the collet and the cutter together,and then draw the cutter out push out slightly the collet in the offered direction,it shall be ready for any change of the cutter.