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Description
Technical data for the ER16 Ø9 mm collet
| Technical Data | |
|---|---|
| Bore Diameter d | 9-8 mm |
| Outside Diameter D | 17 mm |
| Overall Length L | 27.5 mm |
ER16 9 mm collet – reliable clamping for larger diameters with a 1 mm collapse range
The ER16 collet with a 8-9 mm range is designed for tools with larger shank diameters that require increased stability during machining. Hardened 65Mn steel construction with a hardness of 44-48 HRC and precision to DIN 6499B ensure radial runout does not exceed 0.015 mm. The wide 1 mm collapse range eliminates the need for separate collets for each tenth of a millimeter.
Key advantages of the ER16 9 mm collet
- Maximum radial runout of 0.015 mm – maintains dimensional accuracy when milling pockets and deep holes
- Clamping range of 8-9 mm with a 1 mm collapse range – twice the tolerance of ER11 simplifies inventory management
- Hardened 65Mn steel with a consistent hardness of 44-48 HRC – resistance to deformation under increased torque
- 16 slots arranged symmetrically around the axis – eliminates uneven clamping pressure, protecting tools from microcracks
- Compliance with international standards DIN 6499B and ISO 15488-B – universal fit for milling machine holders and grinding spindles
Used for machining structural steels, aluminum alloys, and difficult-to-machine materials. The 9 mm diameter is standard for cylindrical roughing cutters and drills for mounting holes. The greater mass of the ER16 system compared with ER11 effectively stabilizes the tool under high cutting forces, reducing the risk of dislodging or deflection. Chosen by manufacturing plants that require process repeatability and minimal downtime.
Frequently asked questions
The collet secures end mills and cylindrical milling cutters, drills for mounting holes, reamers, and roughing tools with shank diameters of 8-9 mm. Excellent for operations under high loads.
The use of 65Mn steel and a geometry with 16 slots ensures that elastic properties are maintained through tens of thousands of clamping cycles. With regular use and proper maintenance, the collet provides many years of service without requiring replacement.
The ER16 system provides a collapse range that is 100 percent wider (1 mm compared with 0.5 mm), greater component mass to reduce vibration, and increased clamping rigidity at torque levels typical of this diameter class.
The compact ER11 measures 11.5 mm in diameter and 18 mm in length, the popular ER16 measures 17×28 mm, the reinforced ER32 measures 33×40 mm, and the largest ER40 measures 41×46 mm. The system designation is always engraved on the 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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