ER25 collet

An ER25 collet is a type of clamping device commonly used in milling machines and CNC routers to hold tools and workpieces securely. It features a cylindrical design with a series of slots cut along its length, allowing it to expand or contract when a nut is tightened or loosened.

Key features of an ER25 collet:

1. Size Range: It typically accommodates tool shank diameters up to 16 mm (or about 0.625 inches), making it versatile for various applications.

2. Precision: ER25 collets are designed for high precision, providing excellent concentricity and minimal runout, which is crucial for machining operations.

3. Material: Usually made from hardened steel, ER25 collets are durable and resistant to wear.

4. Easy to Use: They are user-friendly, allowing for quick tool changes without the need for complex setups.

5. Compatibility: ER25 collets fit into ER25 collet chucks, which can be mounted on various machines.

Overall, ER25 collets are popular in both hobbyist and industrial settings due to their reliability and versatility in holding a wide range of tooling.