Parlec B40-16ERP312 ER16 Collet Chuck BT40 Taper

Product Description

The PARLEC B40-16ERP312 is an ER16 collet chuck designed for CNC machining centers that use a BT40 taper spindle interface. It accepts ER16 collet series tooling and handles a clamping capacity range of 0.5 mm (0.0197 inches) to 10 mm (0.3937 inches), covering a wide range of small-diameter cutting tools. The chuck features through-coolant delivery, directing coolant directly to the cutting zone for improved chip evacuation and tool life. With a TIR of 0.0002 inches and a balanced rating of 25,000 RPM, this chuck is suited for high-speed, precision machining operations. CNC machinists and tooling technicians are the primary installers.

This collet chuck is intended for use on BT40-spindle vertical and horizontal machining centers in job shop, production, and precision manufacturing environments. The 3.12-inch projection from the gauge line provides clearance for workpiece features that require reach, making it a practical choice for deep-cavity milling and drilling operations. The ER16 collet series accommodates a broad selection of end mills, drills, and reamers in the sub-10 mm range. Through-spindle coolant compatibility allows integration with machine coolant systems that supply coolant through the spindle centerline.

Key Features

• BT40 taper shank for direct mounting to BT40 CNC spindles
• ER16 collet system with 0.5 mm to 10 mm clamping capacity
• 3.12-inch projection for extended reach into deep workpiece features
• 0.0002-inch TIR for high-precision, low-runout tool holding
• Through-coolant design routes coolant directly to the cutting tool
• Balanced to 25,000 RPM for high-speed machining compatibility
• Wrench-actuated collet nut for reliable, repeatable clamping

Compatibility

Designed for use with BT40 taper spindle machining centers and ER16 series collets. Compatible with through-spindle coolant systems.

Installation Notes

Installation is performed by CNC machinists or tooling setup technicians. Power down and lock out the machine spindle before inserting or removing the chuck. Verify the BT40 taper and spindle face are clean and free of chips or burrs before seating the chuck. Torque the retention knob and collet nut using the appropriate ER16 spanner wrench to manufacturer specifications; do not use makeshift tools that can damage the collet nut or chuck threads.