Collet ER25
The ER collet is the most common and popular equipment for clamping a cutting axial tool with a cylindrical shank in a collet chuck of drilling, milling and other machines. It is manufactured in accordance with DIN 6499-B in a wide range of standard sizes, has a through hole and two clamping zones that ensure reliable tool fastening with minimal radial runout. The ER25 collet, which we offer for sale in this part of the catalog, is designed for collet-type chucks with an internal diameter of 25 mm.
ER25 collets, what size can I buy in Stancomplect
Our online store offers for sale collets ER 25 for tools with different shank diameters, which have:
- inner diameter 3.175, 4, 6, 8, 10, 12, 12.7 and 16 mm;
- outer diameter 26 mm;
- length 34 mm.
The presence of a through hole in the ER25 collet allows it to be used to clamp a tool with a shank longer than 34 mm.

Why ER 25 collets should be ordered from the Stancomplect store
If you need ER25 collets, it is best to buy them in our online store. The main advantages of such a purchase:
- Guaranteed quality of each product. We offer for sale high-precision collets with runout level ≤ 0.01, ≤ 0.015, ≤ 0.008 mm from HD Woodworking Tools in Taiwan - an ideal choice for use in CNC machines and processing centers;
- affordable prices – we are the official representative of the Taiwanese brand HD, and can afford a loyal pricing policy;
- provision of manufacturer's warranty;
- prompt order fulfillment and fast delivery.
To make a purchase, leave a request on the cart, and our manager will call you back to agree on the terms of payment and delivery!