Polski 
- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
Technical data for ER25 Ø4 mm precision collet, 0.008 mm
| Technical data | |
|---|---|
| Hole diameter d | 4-3 mm |
| Outside diameter D | 26 mm |
| Overall length L | 34 mm |
| Max. runout | 0.008 mm |
ER25 Ø4 mm precision collet – professional tool clamping, DIN 6499
The ER25 Ø4 mm collet is a precision clamping component designed for professional CNC machining applications. Made from chromium-manganese spring steel, carburized and hardened to 58±2 HRC, it ensures reliable clamping of tools with straight shanks measuring 3-4 mm in diameter.
Key benefits of the ER25 4 mm collet for precision machining
- Minimal radial runout of 0.008 mm – ensures stable tool operation and a high-quality surface finish
- Spring steel carburized to a depth of 0.7 mm – ensures durability and resistance to repeated clamping
- Surface hardness of 58±2 HRC – protects against wear and deformation during intensive use
- Compliance with DIN 6499 – verified quality and interchangeability with ER25 holders
- Clamping tolerance of 1 mm – allows clamping of tools with a diameter of 3-4 mm
The ER25 precision collet accommodates milling cutters, drills, taps, countersinks, and reamers. It is used in machining centers, CNC milling machines, engraving machines, and high-speed machines. Collet dimensions: outside diameter 26 mm, height 34 mm.
A reliable solution for shops and production departments where clamping accuracy and durability matter. Order now and improve your machining precision.
Frequently asked questions
The ER25 system allows clamping of tools from 1 mm to 16 mm. The clamping tolerance is 1 mm, allowing flexible shank selection.
Insert the collet into the nut at an angle and engage the groove with the eccentric projection. Then press the collet into place and tighten the nut with a wrench.
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 designation is marked on the body in accordance with DIN 6499.
Reviews
No customer reviews for the moment.
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 |
Recommended for you
This website uses its own and third-party cookies to improve our services and show you advertising related to your preferences by analyzing your browsing habits. To give your consent to its use, press the Accept button.
Cookie preferences
Functional cookiesTechnical
Functional cookies are strictly necessary to provide the services of the shop, as well as for its proper functioning, so it is not possible to refuse their use. They allow the user to browse through our website and use the different options or services that exist on it.
Advertising Cookies
These are cookies that collect information about the advertisements shown to users of the website. They can be anonymous, if they only collect information about the advertising spaces shown without identifying the user, or personalised, if they collect personal information about the user of the shop by a third party, for the personalisation of these advertising spaces.
Analytics cookies
Collect information about the user's browsing experience in the shop, usually anonymously, although sometimes they also allow the user to be uniquely and unequivocally identified in order to obtain reports on the user's interests in the products or services offered by the shop.