High precision ER collets are essential components in modern CNC tool holding systems and machining centers. Manufactured according to the international standard DIN ISO 15488 (DIN 6499), these clamping collets ensure highly accurate and repeatable gripping of cylindrical cutting tools, significantly contributing to machining stability and the dimensional accuracy of the finished workpiece.

The HP (High Precision) version is specifically designed for applications requiring superior runout performance. With a maximum concentricity of 0.005 mm, these collets help reduce vibration, geometric deviations and premature tool wear, while improving machining quality and surface finish. This precision level is guaranteed when the collet is used with a tool of nominal diameter, ensuring optimal clamping stability and maximum repeatability during machining operations.

The collet body features 12 precision slots, dividing the elastic structure into multiple segments that allow controlled and uniform deformation during tightening. This configuration ensures an even distribution of clamping forces along the entire tool surface, improving concentricity and preventing slippage even during demanding machining conditions.

ER20 HP collets provide a clamping range with 0.5 mm increments, offering excellent flexibility in tool selection. The typical clamping capacity ranges from 1 mm up to 13 mm, making them suitable for milling, drilling, reaming and precision machining operations across a wide range of metallic materials and engineering alloys.

The collets feature a surface finish with roughness Rz 1.6, ensuring optimal contact surfaces between collet, tool and clamping nut. This characteristic is critical for maintaining long-term precision and preventing micro-movements that could lead to dimensional inaccuracies or vibration during high-speed machining operations.

Thanks to their precision and reliability, HP ER collets are widely used in high-technology sectors such as automotive manufacturing, aerospace machining, mold and die production, precision engineering and medical component manufacturing. They are particularly valuable in quality control departments, tool maintenance operations and high-tolerance production environments, where tool clamping precision directly influences machining results.

For companies operating in advanced manufacturing environments, choosing high-precision ER collets represents a strategic solution to improve machining stability, reduce machine setup times and extend the service life of cutting tools.