ER 25 CNC Collets

Designed to deliver exceptional accuracy and reliability for demanding machining operations. ER 25 CNC Collets are engineered to provide secure, concentric clamping of cutting tools and workpieces with tolerances as tight as 0.0002" TIR (Total Indicated Runout), making them essential components for high-precision CNC machining centers, lathes, and milling machines.

The ER 25 collet system features a robust 25mm external diameter with a comprehensive size range covering both metric and imperial dimensions. These collets accommodate shank diameters from 1mm to 16mm (approximately 1/32" to 5/8"), providing versatility for a wide array of cutting tools including end mills, drill bits, reamers, and tapping tools. The spring steel construction ensures consistent clamping force while maintaining the flexibility needed for precise tool centering.

Each ER 25 collet incorporates precision-ground internal surfaces and strategically positioned longitudinal slots that enable uniform radial compression. This design ensures optimal tool grip while minimizing stress concentrations that could lead to premature tool or collet failure. The standard 35mm overall length provides excellent tool support and stability during high-speed machining operations.

ER 25 collets are compatible with a wide range of spindle systems from leading manufacturers including Perske, Elte, Colombo, and HSD. This universal compatibility makes them ideal for retrofit applications and standardization across diverse machine tool fleets. The collets excel in applications requiring high-speed operation, where centrifugal forces demand secure tool retention without compromising balance.

These precision components are particularly well-suited for aerospace, automotive, medical device manufacturing, and precision engineering applications where dimensional accuracy and surface finish quality are paramount. The robust construction enables reliable performance in both light finishing operations and heavy roughing cuts, making them versatile solutions for complete machining cycles.

When selecting ER 25 collets, consider factors including tool shank diameter tolerance, required clamping force, coolant compatibility, and spindle speed requirements. High-frequency spindle applications may benefit from dynamically balanced collets, while flood coolant environments require sealed variants for optimal performance and longevity.

Wurth Baer Machinery's selection of ER 25 CNC collets combines proven engineering with competitive pricing, ensuring that precision manufacturers have access to the workholding solutions needed for competitive advantage in today's demanding manufacturing environment.