The ER40 SSC solid sealed collets are designed for high-performance tool clamping applications in ER toolholding systems according to DIN ISO 15488 (DIN 6499), specifically developed for machining processes requiring high-pressure internal coolant supply.

These collets feature a solid sealed construction, enabling coolant to be delivered directly through the cutting tool. This design significantly improves cooling efficiency at the cutting zone and enhances chip evacuation during machining operations.

The coolant sealing system is achieved through short collet slots, which maintain internal coolant pressure and prevent leakage while allowing the coolant to flow directly through the lubrication holes of the tool. As the coolant exits through the cutting edges, it effectively cools the cutting area and assists in chip removal, improving tool life and machining stability.

The collet structure incorporates a 4 + 4 clamping segment configuration, ensuring high structural rigidity and uniform clamping force distribution around the tool shank. This design allows the collet to achieve an average runout accuracy of 0.008 mm, which is critical for high-precision machining operations and for minimizing vibration and tool wear.

The ER SSC collets are capable of operating with coolant pressures up to 120 bar, making them particularly suitable for demanding machining environments on CNC machining centers, CNC lathes and automated production systems where efficient cooling and chip evacuation are essential.

The collet provides a clamping range from 3 to 30 mm, with a clamping capacity of -0.1 mm, ensuring a precise and secure tool interface.

For proper coolant sealing performance, these collets must be used with solid shank tools having the same nominal diameter as the collet size, inserted fully along the clamping length.

Thanks to their high precision, structural rigidity and ability to manage high-pressure coolant supply, ER40 SSC collets are an ideal solution for milling, drilling and high-precision machining applications, improving machining stability and overall process reliability.