HSK63 or HSK63-ER25: which do I order?

Q: HSK63 or HSK63-ER25: which do I order?

Short answer: Order `HSK63-ER25` when you already know the shank size you run (1–16 mm). Order a bare HSK63 holder when you will change collet sizes between jobs. 1:10 hollow taper, DIN 69893, flange-contact. Buying the assembled HSK63-ER25 saves matching a nut and collet yourself.

Question

Accepted Answer

Short answer: Order `HSK63-ER25` when you already know the shank size you run (1–16 mm). Order a bare HSK63 holder when you will change collet sizes between jobs.

1:10 hollow taper, DIN 69893, flange-contact. Buying the assembled HSK63-ER25 saves matching a nut and collet yourself.