Sandvik Coromant 6074003 Er Collet Chuck CAT40 ER11

Product Description

The SANDVIK COROMANT 6074003 is an ER collet chuck with a CAT40 taper shank, designed for use in CNC machining centers and milling applications that demand precision toolholding. It accepts ER11 series collets and features a 2.7559-inch projection with an overall length of 5.4488 inches. The chuck is balanced to 18,000 RPM, making it suitable for high-speed spindle applications where runout and vibration control are critical. Through-coolant capability, including through-spindle and DIN flange coolant delivery, allows directed coolant flow directly to the cutting zone. Machinists and CNC setup technicians are the primary installers for this toolholder.

This collet chuck is suited for production machining environments using CAT40-spindle CNC mills and machining centers. The ER11 collet series accommodates small-diameter tooling, making this chuck well-matched for drilling, reaming, and light milling operations where compact nose diameter and high rotational accuracy are required. The 0.7480-inch nose diameter supports use in tight-clearance setups. The through-coolant design is especially relevant in applications involving deep holes or materials that generate significant heat at the cutting edge.

Key Features

• ER11 collet system for precise small-diameter tool clamping
• CAT40 taper shank for direct mounting to standard CAT40 spindles
• Balanced to 18,000 RPM for high-speed machining compatibility
• Through-coolant support via through-spindle and DIN flange coolant paths
• 2.7559-inch projection for controlled tool reach
• Nose diameter of 0.7480 inches for clearance in confined workpiece geometry

Compatibility

Designed for use with CAT40-spindle CNC machining centers that support ER11 collet toolholders with through-spindle or DIN flange coolant delivery.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician. Power down and lock out the machine spindle before installing or removing the toolholder. Use a calibrated torque wrench with the appropriate ER11 collet nut spanner to secure the collet nut — do not overtighten by hand. Verify spindle taper cleanliness and inspect the CAT40 interface for debris or damage before seating the chuck.