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Description
Technical data for ER40 Ø8 mm collets
| Technical data | |
|---|---|
| Hole diameter d | 8-7 mm |
| Outside diameter D | 41 mm |
| Overall length L | 46 mm |
ER40 8 mm collet – a versatile solution for the most popular shank diameter
The ER40 Ø8 mm collet is one of the most frequently used sizes in the ER40 clamping system, matching the most popular cutting tool shank diameter. Made from 65Mn spring steel hardened to 44-48 HRC, it provides secure clamping of shank-type milling cutters, standard drills, machine taps, and reamers with a 8 mm shank.
Main advantages of the ER40 Ø8 mm collet
- Ideal fit for standard tools – the 8 mm diameter is among the most common shank sizes in industrial machining
- Durable 65Mn spring steel – a hardness of 44-48 HRC guarantees clamping stability and resistance to repeated clamping cycles
- Manufactured to DIN 6499 – full compatibility with ER40 tool holders and nuts from all reputable manufacturers
- Clamping range of 8-7 mm – a tolerance of 1 mm allows clamping of tools with similar shank diameters
- Versatility of applications – essential for milling, drilling, tapping, and reaming on any machining center
ER40 8 mm collet is an essential item for every workshop using the ER40 system. Recommended for maintenance departments, series production plants, and professional toolrooms performing everyday machining operations. Invest in an ER40 collet – a basic size in every CNC operator's toolkit.
Frequently asked questions
ER40 collets accommodate tools with straight shanks in the 3-26 mm range. Each collet has a clamping tolerance of 1 mm, providing flexibility in tool selection.
Insert the collet into the nut at an angle, engage its groove with the eccentric lip, and press until it clicks into place. Then fit the nut onto the tool holder and tighten it to the recommended torque using a wrench.
Each series has characteristic dimensions: 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 size designation appears on the collet body.
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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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