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Description
Technical data for the ER25 Ø9 mm collet
| Technical Data | |
|---|---|
| Hole diameter d | 9-8 mm |
| Outside diameter D | 26 mm |
| Overall length L | 34 mm |
ER25 collet 9 mm – reliable clamping of medium-sized shanks in a system with enhanced dynamic stability
The ER25 collet with a clamping range of 8-9 mm provides secure clamping of tools with medium shank diameters in a system with enhanced vibration resistance. Manufactured from hardened 65Mn spring steel with a hardness of 44-48 HRC in accordance with DIN 6499, it guarantees radial runout not exceeding 0.015 mm. A clamping allowance of 1 mm allows flexible tool fitting across a wide range of sizes.
Key advantages of the ER25 9 mm collet
- Maximum radial runout of 0.015 mm according to DIN 6499 – positioning precision essential for accurate milling and drilling of components with tight tolerances
- Clamping range of 8-9 mm with a 1 mm collapse range – flexibility in mounting tools with slightly different cylindrical shank dimensions
- Dimensions of 26×34 mm providing optimal mass – effective vibration absorption during intensive machining operations with tools of medium diameters
- 65Mn steel hardened to 44-48 HRC – strength that guarantees consistent clamping properties throughout the service life
- Compliance with ISO 15488 – full interchangeability with holders from leading tooling system manufacturers
The collet is designed to secure end mills, twist drills, machine taps, and reamers used for machining structural steels, aluminum alloys, and engineering plastics. The 9 mm diameter is a common shank size used in the production of medium-sized machine components. With dimensions of 26×34 mm, the ER25 system offers greater mechanical rigidity than the compact ER11 and ER16 systems, providing more stable operation at higher cutting parameters. A proven solution for workshops and production facilities requiring a versatile clamping system.
Frequently asked questions
Used to mount end mills, twist drills, machine taps, reamers, and other tools with a cylindrical shank in the 8-9 mm range. The 1 mm collapse range allows shanks with slightly different diameters to be clamped.
The ER25 design, with dimensions of 26×34 mm, has greater mass and rigidity than ER20 (21×31 mm). The more robust construction dampens vibrations more effectively during machining, improving surface finish and extending tool life.
The miniature ER11 is identified by its dimensions of 11.5×18 mm, the popular ER16 by 17×28 mm, the versatile ER20 by 21×31 mm, the intermediate ER25 by 26×34 mm, the heavy-duty ER32 by 33×40 mm, and the largest ER40 by 41×46 mm. The system designation is printed on the collet body in accordance with DIN 6499.
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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