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Description
Technical data for the ER25 Ø2 mm collet
| Technical Data | |
|---|---|
| Hole diameter d | 2-1 mm |
| Outside diameter D | 26 mm |
| Overall length L | 34 mm |
ER25 2 mm collet – precision clamping of small diameters in a system with enhanced mechanical stability
The ER25 collet with a range of 1-2 mm provides secure clamping of tools with small shank diameters in a system featuring reinforced construction. Manufactured from hardened 65Mn steel with a hardness of 44-48 HRC in accordance with DIN 6499, it ensures maximum radial runout of 0.015 mm. A collapse range of 1 mm provides fitting flexibility unavailable in the compact ER11 and ER16 systems.
Key advantages of the ER25 2 mm collet
- Radial runout not exceeding 0.015 mm in accordance with DIN 6499 – positioning accuracy essential for precision micromachining and engraving
- Clamping range of 1-2 mm with a tolerance of 1 mm – a wide collapse range facilitates mounting of tools with slightly different shank diameters
- Dimensions of 26×34 mm providing increased mass – effective vibration damping when working with delicate small-diameter tools
- 65Mn spring steel hardened to 44-48 HRC – durability ensuring stable clamping properties over a long service life
- Compliance with ISO 15488 – full interchangeability with holders from reputable toolholding system manufacturers
The collet is designed to secure micro end mills, diamond engraving tools, precision drills, and miniature countersinks used for machining electronic components, jewelry parts, and model-making components. The ER25 system, with dimensions of 26×34 mm, exceeds the smaller ER11 (11.5×18 mm) and ER16 (17×28 mm) systems in mass and rigidity, resulting in better vibration reduction during micromachining. A proven solution for professional toolrooms requiring maximum stability when working with small-diameter tools.
Frequently asked questions
It is used to clamp micro end mills, diamond engraving tools, precision drills, miniature countersinks, and other straight-shank tools within the 1-2 mm range. A tolerance of 1 mm provides mounting flexibility for shanks with slightly different diameters.
The ER25 design, with dimensions of 26×34 mm, has significantly greater mass than ER11 (11.5×18 mm) and ER16 (17×28 mm). The more substantial construction provides better vibration absorption during micromachining, improving finish quality and extending precision tool life.
The smallest ER11 measures 11.5×18 mm, the common ER16 is defined by its 17×28 mm size, the versatile ER20 is identified by its 21×31 mm dimensions, the intermediate ER25 measures 26×34 mm, the heavy-duty ER32 is identified by dimensions of 33×40 mm, and the large ER40 measures 41×46 mm. The system designation is marked on the collet body 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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