Parlec ERS40-0787 ER40 Collet 20 Mm

Product Description

The PARLEC ERS40-0787 is an ER40 series collet designed for use in ER40-compatible collet chucks on CNC machining centers, manual mills, and other rotating spindle setups. It accepts a 20 mm shank diameter tool and features an overall length of 1.811 inches and an overall diameter of 1.614 inches. The collet applies clamping pressure at 1800 units to grip cutting tools, drills, reamers, and end mills securely during operation. Machinists and CNC operators install this collet as a precision workholding component in production and job-shop environments.

This ER40 collet is suited for use in both high-volume production machining and general-purpose shop applications where a 20 mm tool shank must be held concentrically in an ER40 chuck. It fits standard ER40 collet chucks used on vertical machining centers, horizontal machining centers, and manual knee mills. The collet is appropriate for milling, drilling, reaming, and tapping operations where consistent clamping force and runout control are required.

Key Features

• ER40 collet series with 20 mm collet size for direct tool shank fitment
• Overall length of 1.811 inches for standard ER40 chuck depth compatibility
• Overall diameter of 1.614 inches for proper seating in ER40 chuck bore
• 1800 clamping pressure rating for secure tool grip during cutting operations
• Compact, lightweight design at 0.4 pounds for easy handling and storage

Compatibility

Designed as an OEM-style replacement or direct-fit collet for use with standard ER40 collet chucks accepting a 20 mm tool shank diameter.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Before installing or removing the collet, ensure the spindle is fully stopped and the machine is powered down or in a safe lockout state per facility lockout/tagout procedures. Insert the collet into the ER40 nut before threading the nut onto the chuck body, and tighten using the appropriate ER collet wrench to the chuck manufacturer's specified torque. Do not exceed the rated clamping force or use damaged collets, as this can compromise tool grip and concentricity.