Parlec C50-25SF315-9 Shrink-fit Tool Holder CAT50

Product Description

The PARLEC C50-25SF315-9 is a shrink-fit tool holder adapter designed for CNC machining centers requiring a CAT50 taper shank interface. It accepts a 0.25-inch bore diameter and delivers a 3.15-inch projection length, making it well-suited for operations that demand extended reach without sacrificing rigidity. The adapter supports through-coolant delivery, directing coolant directly to the cutting zone for improved chip evacuation and tool life. Balanced to 15,000 RPM, this holder is appropriate for high-speed machining applications. It weighs 8 pounds and is installed by machinists and toolroom technicians in production and job-shop environments.

This adapter is used in horizontal and vertical CNC machining centers equipped with a CAT50 spindle. The 0.25-inch hole diameter accommodates small-diameter cutting tools such as end mills, drills, and reamers. With a 1.33-inch clamping depth and a 0.83-inch nose diameter, it provides a secure shrink-fit grip on tooling shanks. Through-coolant capability makes it a practical choice for deep-bore drilling, hard-material milling, and other applications where flood coolant alone is insufficient.

Key Features

• CAT50 taper shank for direct spindle mounting on compatible machining centers
• 0.25-inch bore diameter with 1.33-inch clamping depth for secure shrink-fit tool retention
• 3.15-inch projection length for extended-reach tooling setups
• Through-coolant design channels coolant directly to the cutting edge
• Balanced to 15,000 RPM for high-speed machining compatibility
• 0.83-inch nose diameter for reduced interference in tight-clearance applications

Compatibility

Designed as an OEM-style shrink-fit tool holder adapter for CNC machining centers with a CAT50 taper spindle interface accepting 0.25-inch shank tooling.

Installation Notes

Shrink-fit holders must be heated using a dedicated induction shrink-fit unit to expand the bore before tool insertion and removal - never use open flame or improvised heat sources. Ensure the spindle and machine are fully powered down and the spindle has cooled before removing or installing the holder. Verify taper cleanliness and freedom from burrs or contamination before seating the CAT50 shank. Through-coolant fittings and machine-side coolant lines should be inspected and confirmed compatible before operation.