Parlec C40-20ERP612 ER20 Collet Chuck CAT40 Taper

Product Description

The PARLEC C40-20ERP612 is an ER20 collet chuck with a CAT40 taper shank, designed for use in CNC machining centers where precision workholding and through-spindle coolant delivery are required. It accepts ER20 collets with a capacity range of 1 mm to 13 mm (0.0394 to 0.5118 inches), covering a wide range of tool shank diameters. The chuck features a 6.12-inch projection and holds a total indicator runout (TIR) of 0.0002 inches, making it well-suited for close-tolerance milling, drilling, and tapping operations. At 4 pounds, it is balanced to 25,000 RPM for high-speed spindle applications.

This collet chuck is intended for CNC vertical and horizontal machining centers equipped with CAT40 spindles. The 6.12-inch projection suits applications requiring reach into deep pockets or clearance around fixtures. Through-spindle coolant capability directs cutting fluid directly to the tool tip, improving chip evacuation and tool life in demanding cutting operations. Wrench actuation is used for collet engagement and release. This tool is a fit for job shops, production machining environments, and aerospace or precision manufacturing applications where runout and balance are critical factors.

Key Features

• ER20 collet system accepts tool shanks from 1 mm to 13 mm (0.0394 to 0.5118 inches)
• 0.0002-inch TIR for tight runout control in precision cutting applications
• CAT40 taper shank for compatibility with standard CAT40 CNC spindles
• Through-spindle coolant delivery channels fluid directly to the cutting zone
• Balanced to 25,000 RPM for high-speed machining operations
• 6.12-inch projection provides reach for deep-pocket and fixture-clearance work

Compatibility

Designed for use with CAT40-spindle CNC machining centers using the ER20 collet system. Accepts standard ER20 collets within the 1 mm to 13 mm capacity range.

Installation Notes

Installation and removal should be performed by a qualified CNC machinist or tooling technician with the spindle fully powered down and the machine in a safe, locked-out state. Use the appropriate ER20 collet nut wrench and collet nut torque procedure per the machine tool builder and collet manufacturer guidelines. Verify coolant passages are clear before use and confirm the taper shank seating is clean and free of chips or burrs before mounting. Inspect TIR with a dial indicator after mounting to confirm runout is within tolerance for the application.