Collets ER
ER collet is an important element of the equipment of router machines and CNC machining centers. It serves to fix the cutting tool in the spindle unit, and the cutting accuracy depends on its quality and balance. The Stancomplect online store offers for sale ER type collets - the most common of all collet chuck clamps, designed to fix cutters and drills with a cylindrical shank.
Main features of ER collets
ER collets are manufactured in accordance with DIN 6499B standard from 65Mn steel with a hardness of HRC 44-48. Their main feature is the presence of a through hole, which provides a more secure fixation due to the double clamping zone and allows the use of a tool with a shank of any length.
The ER collet chuck is a precision chuck with high accuracy and balance with a runout level of no more than 0.005, 0.008 and 0.015 mm. It can be used for various jobs:
- drilling;
- milling;
- engraving and others.

How to choose ER collet
In addition to the material of manufacture, its hardness and the level of runout of the chuck, when choosing an ER collet, its dimensions are also important: the outer and inner diameter. In our catalog you will find clamping sleeves in a wide variety of sizes:
- ER-11 (3.175-7 mm.);
- ER-16 (3.175-10 mm.);
- ER-20 (3.175-12.7 mm.);
- ER-25 (3.175-16 mm.);
- ER-32 (3.175-20 mm.);
- ER-40 (6-25 mm.).
If you want to buy ER collets for a router machine, order them in our online store. We offer high-quality products from the Taiwanese brand HD Woodworking Tools at an affordable price, since we are the official dealer of the manufacturer. Our specialists will help you choose the right ER collets for your equipment and cutting tool.
