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Description
Technical data for ER25 Ø12 mm precision collet, 0.008 mm
| Technical data | |
|---|---|
| Hole diameter d | 12-11 mm |
| Outside diameter D | 26 mm |
| Overall length L | 34 mm |
| Max. runout | 0.008 mm |
ER25 12 mm precision collet – highly repeatable clamping with minimal runout of 0.008 mm
The ER25 precision collet with a 11-12 mm range is a solution for applications requiring greater tool positioning accuracy. Radial runout limited to 0.008 mm provides nearly twice the accuracy of the standard version. Hardened 65Mn spring steel with a hardness of 44-48 HRC and compliance with DIN 6499 ensure repeatable results throughout its service life.
Key benefits of the ER25 12 mm precision collet
- Radial runout reduced to 0.008 mm – a critical parameter when manufacturing components requiring strict control of geometric tolerances
- Clamping range of 11-12 mm – accommodates shank diameters within the 1 mm compensation range
- System dimensions of 26×34 mm – a balance between clamping rigidity and the compact size needed in confined workspaces
- 65Mn material heat-treated to 44-48 HRC – resistance to plastic deformation during repeated clamping cycles
- Interchangeability in accordance with ISO 15488 – trouble-free compatibility with holders from different manufacturers without additional modifications
A solution designed for finishing operations on milling machines and machining centers where surface quality and dimensional accuracy are priorities. The 12 mm shank is a size commonly found in tools for machining medium-sized machine components. The dimensions of ER25 provide capabilities exceeding those of smaller ER11, ER16, and ER20 systems while maintaining moderate weight. The choice of toolrooms and precision production departments in the automotive and aerospace industries.
Frequently asked questions
The version with 0.008 mm runout is essential for finishing operations, mold and die making, and manufacturing components with tolerances on the order of hundredths of a millimeter. A standard collet with 0.015 mm runout is sufficient for roughing and semi-finishing.
The ER25 precision collet fits any standard holder meeting ISO 15488 requirements. The improved accuracy results from tighter collet manufacturing tolerances, rather than a change in clamping system geometry.
The smallest ER11 measures 11.5×18 mm, the common ER16 measures 17×28 mm, the medium ER20 measures 21×31 mm, the intermediate ER25 measures 26×34 mm, the large ER32 measures 33×40 mm, and the largest ER40 measures 41×46 mm. The system type is always marked on the collet body.
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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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