Parlec C50-38SF315-9 Shrink-fit Holder CAT50 0.375 in

Product Description

The PARLEC C50-38SF315-9 is a shrink-fit tool holder adapter with a CAT50 taper shank, designed for precision CNC machining applications. It accepts a 0.375-inch bore diameter and delivers a 3.15-inch projection from the spindle face, making it suitable for deep-reach operations where clearance is critical. The nose diameter measures 0.94 inches and the clamping depth is 1.69 inches, providing a secure thermal interference fit around the cutting tool shank. This adapter supports through-coolant delivery and is balanced to 15,000 RPM, meeting the demands of high-speed machining centers. It is installed by CNC machinists and tooling specialists in production and job-shop environments.

This shrink-fit holder is intended for use on vertical and horizontal machining centers equipped with CAT50 spindle interfaces. The 0.375-inch bore accommodates solid carbide end mills, drills, and other round-shank tooling of the corresponding shank diameter. Through-coolant capability channels cutting fluid directly to the tool tip, which is especially useful in deep-cavity milling, drilling, and high-feed operations where chip evacuation and heat management are critical. The 15,000 RPM balance rating supports modern high-speed spindle applications in aerospace, die-mold, and general precision machining.

Key Features

• CAT50 taper shank for direct mounting in CAT50-interface machining center spindles
• 0.375-inch bore diameter accepts standard 3/8-inch round-shank cutting tools via thermal shrink fit
• 3.15-inch projection provides extended reach for deep-pocket and complex-geometry operations
• Through-coolant design directs cutting fluid to the tool tip for improved chip evacuation and tool life
• Balanced to 15,000 RPM for compatibility with high-speed spindle applications
• 1.69-inch clamping depth ensures a strong, concentric thermal grip on the tool shank

Compatibility

Designed as an OEM-style shrink-fit tool holder for machining centers with a CAT50 spindle interface, accepting 0.375-inch shank cutting tools.

Installation Notes

Shrink-fit holders require an induction heater or shrink-fit station to expand the bore before tool insertion and removal - never use open flame. Power down the machining center and allow the spindle to reach a safe state before changing tooling. Verify the tool shank is clean and free of burrs before insertion to ensure proper concentricity after cooling. Follow the machine tool builder and tooling manufacturer guidelines for pull-stud torque and drawbar force specifications.