BT50 ER collet chuck BT50-ER25-135L BT50 ER25 Collet Chuck 135mm length
Material:40Cr or 20CrMnTi
Hardess:HRC52-58
Runout ≤0.003mm
Bright finishing . G6.3 15000rpm or G2.5 25000rpm can also be provided .
Both Form AD and AD/B can be provided .




What is an ER collet chuck?
The "ER" collet system, developed and patented by Rego-Fix in 1973, and standardized as DIN 6499, is the most widely used clamping system in the world and today available from many producers worldwide. The standard series are: ER-8, ER-11, ER-16, ER-20, ER-25, ER-32, ER-40, and ER-50.
What size are ER50 collets?
ER50 series collets have a capacity of . 218-1.339 inches. Each ER50 collet has a range of . 078 inches(2mm).