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Description
Technical data for the ER25 Ø12 mm collet
| Technical Data | |
|---|---|
| Hole diameter d | 12-11 mm |
| Outside diameter D | 26 mm |
| Overall length L | 34 mm |
ER25 collet 12 mm – secure clamping of medium diameters with the extended allowance of the intermediate system
The ER25 collet with a clamping range of 11-12 mm offers secure clamping of tools in a common size range used in the production of structural and machine components. Manufactured from hardened 65Mn steel with a hardness of 44-48 HRC and complying with DIN 6499, it ensures radial runout limited to 0.015 mm. A clamping allowance of 1 mm guarantees greater flexibility in tool selection than smaller ER systems.
Key advantages of the ER25 12 mm collet
- Radial runout not exceeding 0.015 mm in accordance with DIN 6499 – positioning accuracy essential for precision machining of mounting holes
- Clamping range of 11-12 mm with 1 mm compensation – versatility covering a common diameter used in mechanical structures
- ER25 system dimensions of 26×34 mm – balanced design combining moderate mass with enhanced vibration resistance
- Hardened 65Mn steel with a hardness of 44-48 HRC – durability ensuring stable performance over many thousands of operating cycles
- Compliance with the international ISO 15488 standard – full interchangeability with holders from leading CNC machine tool manufacturers
The collet is designed to clamp end mills, drills for mounting holes, machine taps, and reamers used for machining structural steels, aluminum alloys, and engineering plastics. The 12 mm diameter is among the most frequently used sizes in the production of machine components and steel structures. The ER25 system bridges the gap between the compact ER20 and the reinforced ER32, providing an optimal ratio of overall size to clamping capacity while maintaining an allowance of 1 mm. A proven solution for production facilities and machine shops.
Frequently asked questions
Used to secure end mills, drills for mounting holes, machine taps, reamers, and other tools with straight shanks in the 11-12 mm range. An allowance of 1 mm permits fitting of shanks with slightly varying diameters.
The ER25 collet, measuring 26×34 mm, has greater mass and rigidity than ER20, which measures 21×31 mm. Its clamping allowance of 1 mm exceeds the allowance of ER20 (0.9 mm), permitting a wider selection of tools while absorbing vibrations more effectively during machining.
The smallest ER11 measures 11.5×18 mm, the popular ER16 measures 17×28 mm, the medium ER20 measures 21×31 mm, the intermediate ER25 measures 26×34 mm, the reinforced ER32 measures 33×40 mm, and the industrial ER40 measures 41×46 mm. The system designation appears on each collet in accordance with the requirements of 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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