Meet the Omega ER40 Collet Standard Precision — a dependable, high-precision clamping solution built for ER40 collet chucks. With a tight 10 micron run-out, it delivers concentric grip that translates to cleaner cuts, longer tool life, and repeatable results across jobs.

• Exceptional run-out control: 10 µm run-out minimizes tool deflection and keeps your milling, drilling, and reaming operations aligned to tighter tolerances.
• Designed for ER40 chucks: Standard precision compatibility ensures quick, reliable tool changes without compromising gripping force.
• Compact, precise dimensions: 27mm body with a 26.8mm clamping diameter delivers a robust, space-efficient hold for round tooling and workpieces.
• Durable, accurate construction: Hardened and ground surfaces resist wear and maintain accuracy through demanding machining cycles.
• Versatile for everyday machining: Ideal for drilling, light milling, and general-purpose machining of round stock and end mills within the ER40 range.
• Consistent performance: Uniform clamping force along the entire length of the collet reduces vibration and improves surface finish.

Use this ER40 collet to achieve repeatable clamping when precision matters. For best results, pair it with a compatible ER40 chuck and nut, keep the bore and outer surfaces clean, and verify run-out with a dial indicator when tight tolerances are required. This single, high-precision tool is ideal for both professional workshops and serious hobbyists seeking reliable, predictable performance from their ER40 setup.