ATORN Precision collet chuck SK40 (ISO 7388-1) ER25 A=70 mm

Application

For clamping tools with straight shanks without loss of concentricity or clamping force up to shank tolerance h10, for economic machining of individual and series parts with extremely high-precision machining results. Ideal for HPC and HSC machining.

Execution

• 30° trapezoidal thread with polished, extra-long double guide with special anti-friction coating for less friction
• Clamping forces are evenly distributed across the entire cylindrical shell surface and perfect surfaces are achieved due to optimally absorbed radial forces
• Precise centring when tightening the clamping nut
• Suitable torque wrench attachments 23360 960-966, torque wrench recommended, suitable ER collets no. 23323 617-658

Advantage

• Resistant to fluctuations in temperature and entirely suitable for drying processes and hard milling up to 200 °C
• Reinforcement of the chuck body over the diameter of the clamping nut ensures outstanding stability with an optimum interference contour
• Extremely low system concentricity of < 3 µm with the 2 µm ATORN UP collets. With Fahrion sealed collets 2 µm HPD to 80 bar for internal cooling (without sealing washer)
• Completely enclosed in the chuck cone for optimum stability and even distribution of clamping forces
• Retention force twice that of conventional collet chucks

Notes

The previous standard DIN 69871-1 was superseded by ISO 7388-1.

Delivery

1x precision SK40 collet chuck (ISO 7388-1); incl. clamping nut