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Description
Technical data for the ER16 Ø8 mm collet
| Technical Data | |
|---|---|
| Bore Diameter d | 8-7 mm |
| Outside Diameter D | 17 mm |
| Overall Length L | 27.5 mm |
ER16 8 mm collet – precision clamping for the most versatile diameters in CNC machining
The ER16 collet with a 7-8 mm range is a solution for the most popular tool diameter in industrial machining. Hardened 65Mn steel with a hardness of 44-48 HRC and manufacturing in accordance with DIN 6499B ensure a maximum radial runout of 0.015 mm under intensive use. The 1 mm collapse range allows tools with slightly different shank diameters to be clamped without changing the collet.
Key advantages of the ER16 8 mm collet
- Radial runout accuracy ≤0.015 mm – guarantees surface quality and dimensional tolerances during milling and drilling
- Versatile 7-8 mm range with a 1 mm tolerance – twice the flexibility of ER11 reduces shop tooling costs
- Durable 65Mn steel hardened to 44-48 HRC – the material retains its elastic properties through tens of thousands of clamping cycles
- Design with 16 slots featuring precise geometry – uniform stress distribution eliminates the risk of damage to delicate tools
- Full compliance with DIN 6499B and ISO 15488-B – guaranteed compatibility with holders from all reputable manufacturers
Ideal for machining steel, aluminum, plastics, and composite materials. The 8 mm diameter is the most popular drill and milling cutter size in machine shops, making this collet an essential tooling item. The greater rigidity of ER16 compared with the compact ER11 results in improved stability at increased rotational speeds and cutting forces. Professionals value the ability to clamp repeatedly without any loss of performance.
Frequently asked questions
It is used to secure twist drills, cylindrical milling cutters and end mills, countersinks, reamers, and machine taps in the 7-8 mm range. Maximum versatility in CNC applications.
The use of hardened 65Mn steel and a design with 16 slots ensures full performance through tens of thousands of clamping operations. In regular shop use, the collet provides many years of service without losing its properties.
Choosing ER16 provides twice the collapse range (1 mm compared with 0.5 mm for ER11), greater component mass to reduce vibration, and increased clamping rigidity under high loads.
The smallest ER11 system measures 11.5×18 mm, the medium ER16 measures 17×28 mm, the larger ER32 measures 33×40 mm, and the largest ER40 measures 41×46 mm. The system identifier is engraved on each collet in accordance with DIN 6499B.
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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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