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Description
Technical data for the ER25 Ø6 mm collet
| Technical Data | |
|---|---|
| Hole diameter d | 6-5 mm |
| Outside diameter D | 26 mm |
| Overall length L | 34 mm |
ER25 6 mm collet – stable clamping of standard shanks in a system with a balanced design
The ER25 collet with a 5-6 mm range provides secure clamping of tools with one of the most common shank diameters in a system offering optimum mechanical rigidity. Hardened 65Mn steel construction with a hardness of 44-48 HRC according to DIN 6499 guarantees a maximum radial runout of 0.015 mm. A collapse range of 1 mm enables flexible tool selection across the entire size range.
Key advantages of the ER25 6 mm collet
- Maximum radial runout of 0.015 mm according to DIN 6499 – positioning accuracy essential for precision milling and drilling operations
- Clamping range of 5-6 mm with a tolerance of 1 mm – wide compensation range allows tools with slightly different shank diameters to be fitted
- Overall dimensions of 26×34 mm provide balanced mass – effective vibration damping during machining with tools of standard diameters
- 65Mn spring steel hardened to 44-48 HRC – durability that guarantees stable clamping performance over many years of service
- Compliance with ISO 15488 – full interchangeability with holders from leading CNC tooling system manufacturers
This collet is designed to secure end mills, twist drills, machine taps, and reamers used to machine structural steels, aluminum alloys, and engineering plastics. The 6 mm diameter is one of the basic shank sizes offered by most cutting tool manufacturers. The ER25 system with a 26×34 mm design exceeds the compact ER11 and ER16 systems in rigidity, providing more effective vibration reduction during heavy machining operations. A proven solution for professional shops requiring process reliability and repeatability.
Frequently asked questions
It holds end mills, twist drills, machine taps, reamers, and other tools with straight shanks in the 5-6 mm range. A tolerance of 1 mm provides flexibility in fitting shanks with slightly different dimensions.
The ER25 system with overall dimensions of 26×34 mm has greater mass and rigidity than ER16 (17×28 mm). The heavier construction absorbs vibration more effectively during machining, improving surface finish and extending the service life of the tools used.
The smallest ER11 measures 11.5×18 mm, the common ER16 measures 17×28 mm, the versatile ER20 has overall dimensions of 21×31 mm, the intermediate ER25 measures 26×34 mm, the heavy ER32 is identified by its 33×40 mm dimensions, and the large ER40 measures 41×46 mm. The system designation is marked on the collet body according to 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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