Accupro QCK-1 BT-40 Rigid Tapping Chuck BT40 M3-M12

Product Description

The ACCUPRO QCK-1 BT-40 is a rigid tapping chuck designed for CNC machining centers using a BT40 taper shank interface. It accepts taps ranging from M3 to M12 (up to 9/16 inch) and features a quick-change design that reduces tool change time at the spindle. Projection measures 2.835 inches, placing the tap at a consistent working distance from the spindle face. Through-coolant capability directs coolant directly to the cutting zone, supporting longer tap life and chip evacuation in blind and through-hole applications. This chuck is intended for use by machinists and CNC toolroom professionals in production and job-shop environments.

This tapping chuck is suited for rigid tapping operations on vertical and horizontal machining centers equipped with a BT40 spindle taper. The Size 1 tap adapter accommodates the specified M3 to M12 tap range, making it appropriate for general-purpose thread-cutting in steel, aluminum, and similar materials. Through-coolant support makes it a practical choice for high-volume production tapping where heat and chip buildup are concerns. The quick-change interface allows adapters to be swapped without removing the chuck body from the spindle.

Key Features

• Rigid tapping style for synchronized CNC tapping cycles without floating compensation
• BT40 taper shank for direct mounting to BT40 spindle interfaces
• M3 to M12 tap capacity (up to 9/16 inch) via Size 1 adapter
• 2.835-inch projection from gauge line to nose
• Through-coolant compatible for directed coolant delivery to the cutting zone
• Quick-change design for fast adapter swaps at the machine
• Nose diameter of 1.2598 inches (32.00 mm) with a 19.00 mm through-hole diameter

Compatibility

Designed for use with BT40 spindle taper machining centers. Accepts Size 1 tap adapters for M3 to M12 taps. Specific machine compatibility should be verified against the spindle taper standard and draw-bar pull force requirements of the host machine.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. Power down and lock out the machine spindle before mounting or removing the chuck. Ensure the BT40 taper and retention knob are clean and free of chips or coolant deposits before seating. Verify drawbar torque requirements per the machine tool builder specifications before running the spindle.