Accupro 778462 Shell Mill Holder HSK63A 1 Inch Pilot

Product Description

The ACCUPRO 778462 is an HSK63A taper shank shell mill holder designed for use on CNC machining centers. It accepts a 1 inch pilot diameter and provides a 3 inch projection from flange to nose end, giving machinists the clearance needed for face milling and similar operations. The holder runs balanced to 15,000 RPM and holds a total indicator reading (TIR) of 0.003 mm, supporting precision milling at high spindle speeds. A 1/2-20 lock screw thread secures the shell mill. This tool is installed by machinists and CNC setup technicians in production and job-shop environments.

The 778462 is suited for face milling, shoulder milling, and general material removal applications on horizontal and vertical CNC machining centers equipped with HSK63A spindle interfaces. The HSK63A connection provides high rigidity and repeatability, making it appropriate for high-speed and high-feed operations in ferrous and non-ferrous materials. The 3 inch flange-to-nose projection accommodates workpiece geometries that require additional reach from the spindle face.

Key Features

• HSK63A taper shank interface for rigid, repeatable spindle connection
• 1 inch pilot diameter for standard shell mill mounting
• 3 inch projection from flange to nose end for extended reach
• Balanced to 15,000 RPM for high-speed machining compatibility
• TIR of 0.003 mm for precision runout control
• 1/2-20 lock screw thread for secure shell mill retention

Compatibility

Designed as a direct-fit shell mill holder for CNC machining centers equipped with HSK63A spindle interfaces accepting a 1 inch pilot shell mill.

Installation Notes

Installation and removal should be performed by a qualified machinist or CNC toolroom technician. Always power down and lock out the machine spindle before mounting or dismounting toolholders. Use the correct torque and lock screw tools specified by the machine manufacturer for HSK tooling. Inspect the HSK taper and spindle bore for contamination or damage before seating the holder.