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Description
| Technical Data | |
|---|---|
| Bore Diameter d | 4-3 mm |
| Outside Diameter D | 11.5 mm |
| Overall Length L | 18 mm |

ER11 4 mm collet – versatile clamping for small-diameter tools
The ER11 4 mm collet is a precision solution for clamping cutting tools with diameters of 3-4 mm in accordance with DIN 6499B. Made from 65Mn spring steel with a hardness of 44-48 HRC, it provides secure, repeatable clamping in CNC machines and compact milling machines.
Key features of the ER11 4 mm collet
- Radial runout ≤0.015 mm – ensures cutting stability and surface quality in finishing operations
- Clamping range of 3-4 mm with a tolerance of 0.5 mm – accommodates many common tool diameters without requiring a collet change
- Construction from 65Mn steel hardened to 44-48 HRC – resists deformation during repeated clamping and release
- System of 16 evenly spaced slots – uniform distribution of clamping force eliminates the risk of tool shank damage
- Compliance with DIN 6499B and ISO 15488-B – fully compatible with ER11 clamping nuts and spindles from various manufacturers
The ER11 4 mm collet is used for machining parts with medium dimensional tolerances, precision engraving, and prototype production. Recommended for machine shops requiring flexibility in tool selection while maintaining high workmanship quality.
Frequently asked questions
The clamping range covers shanks from 3 to 4 mm. The collapse range is half a millimeter, allowing secure clamping of tools with different diameters.
The collet is suitable for CNC machines, compact milling machines, and engraving machines. Ideal for precision machining of parts.
Radial runout does not exceed 0.015 mm in accordance with DIN 6499B. This ensures dimensional repeatability and a high-quality finish on machined surfaces.
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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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