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Description
Technical data for the ER40 Ø25 mm collet
| Technical data | |
|---|---|
| Hole diameter d | 25-24 mm |
| Outside diameter D | 41 mm |
| Overall length L | 46 mm |
ER40 25 mm collet – maximum performance in machining large components
The ER40 Ø25 mm collet is a high-performance component of the ER40 clamping system, designed for use with cutting tools with large shank diameters. Made from 65Mn spring steel with a hardness of 44-48 HRC, it offers secure, precise clamping of cylindrical milling cutters, roughing tools, and specialized milling heads with a 25 mm shank.
Key features of the ER40 Ø25 mm collet
- Maximum clamping force for large tools – construction designed to transmit high torque
- Premium-grade 65Mn spring steel – hardening to 44-48 HRC guarantees long-term use without loss of properties
- Manufactured to DIN 6499 – universal compatibility with ER40 holders and nuts from leading manufacturers
- Clamping tolerance 25-24 mm – the 1 mm range allows flexible selection of tools with similar diameters
- Optimized for heavy machining – suitable for gantry milling machines, large machining centers, and special-purpose machines
ER40 25 mm collet is one of the two largest sizes in the ER40 system, designed for the most demanding cutting operations. Chosen by die manufacturers, industrial toolrooms, and companies specializing in machining large components. Invest in an ER40 collet – a reliable foundation for working with the largest tools.
Frequently asked questions
The ER40 series allows clamping of tools with straight shanks in the 3-26 mm range. Each size offers a clamping tolerance of 1 mm, increasing application versatility.
Insert the collet into the nut at an angle, engage its groove with the eccentric lip, and press until it clicks into place. Then fit the nut onto the tool holder and tighten it to the recommended torque using the dedicated wrench.
ER sizes differ in external dimensions: ER11 measures 11.5×18 mm, ER16 measures 17×28 mm, ER20 measures 21×31 mm, ER25 measures 26×34 mm, ER32 measures 33×40 mm, and ER40 measures 41×46 mm. The size designation is marked on the 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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