Parlec C40-75SM1 Shell Mill Holder CAT40 0.75 Inch Pilot

Product Description

The PARLEC C40-75SM1 is a CAT40 taper shank shell mill holder designed for use in CNC machining centers. It accepts shell mills with a 0.75 inch pilot diameter and features a 1.75 inch nose diameter with a 1.38 inch projection from flange to nose end. The holder is balanced to 30,000 RPM, making it suitable for high-speed milling operations where runout control is critical. Total Indicated Runout (TIR) is rated at 0.0002 inch, delivering the precision required for finish milling applications. A 3/8-24 lock screw thread secures the cutter. Licensed machinists and tooling specialists install this holder as part of a modular tooling setup on vertical or horizontal machining centers.

The C40-75SM1 is suited for use with shell mills in the 1.75 inch to 2 inch cutting diameter range. It is a direct-mount CAT40 toolholder appropriate for production machining environments where consistent tool runout and high spindle speed capability are required. The through coolant feature is not present on this holder, so coolant delivery must be handled externally or through the machine table setup. This holder is a practical choice for face milling, shoulder milling, and similar operations performed on CAT40-spindle machining centers in job shops and production facilities.

Key Features

• CAT40 taper shank for direct spindle mounting on CAT40 machining centers
• 0.75 inch pilot diameter accommodates shell mills in the 1.75 to 2 inch cutting diameter range
• TIR of 0.0002 inch for precise cutter positioning and finish quality
• Balanced to 30,000 RPM for high-speed milling applications
• 3/8-24 lock screw thread (lock screw model 75LS) secures shell mill reliably
• 1.38 inch projection from flange to nose end for tooling clearance planning

Compatibility

Designed for use with shell mills in the 1.75 inch to 2 inch cutting diameter range on CAT40-spindle machining centers. Lock screw size is 3/8-24, compatible with the PARLEC 75LS lock screw.

Installation Notes

Installation is performed by a machinist or tooling technician. Power down and lock out the machining center spindle before mounting or removing any toolholder. Seat the CAT40 taper fully into the spindle and torque the drawbar to the machine manufacturer specification before operating. Inspect the taper shank and spindle bore for contamination or damage prior to assembly, as foreign material on the taper interface directly degrades runout performance.