Accupro 1527330 Hydraulic Chuck CAT40 1/4 in Bore

Product Description

The ACCUPRO 1527330 is a hydraulic tool holder chuck with a CAT40 taper shank, designed for precision milling and machining operations on CNC machining centers. It accepts a 1/4 inch bore and delivers a total indicator runout (TIR) of 0.000010 inches, making it suitable for high-accuracy finish work. The holder is balanced to 25,000 RPM and supports through-coolant delivery, keeping cutting tools cool during extended operations. With a clamping depth of 37.00 mm and a nose diameter of 19.80 mm, it provides a secure, vibration-dampening grip on end mills, reamers, and other straight-shank tooling. Machinists and CNC programmers in production and job-shop environments rely on this style of holder for tight-tolerance work.

This hydraulic chuck is suited for use on CNC vertical and horizontal machining centers with CAT40 spindle interfaces. It is appropriate for finishing passes, fine boring, and reaming operations where runout control is critical. The through-coolant feature makes it compatible with flood and high-pressure coolant systems. Typical applications include aerospace, die and mold, and general precision machining where tool runout directly affects surface finish and part tolerance.

Key Features

• CAT40 taper shank for direct mounting on CAT40 spindles
• 0.000010 inch TIR for high-accuracy, low-runout tool holding
• Balanced to 25,000 RPM for high-speed machining compatibility
• Through-coolant capable for flood and high-pressure coolant delivery
• 1/4 inch bore with 37.00 mm clamping depth for secure straight-shank tool grip
• Hydraulic clamping mechanism dampens vibration during cutting

Compatibility

Designed for use in CAT40 spindle interfaces on CNC machining centers that accept standard CAT40 taper toolholders.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or tooling technician following the machine tool manufacturer's spindle and drawbar torque procedures. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before mounting or removing the holder. Clean the spindle taper and holder taper thoroughly before seating to avoid runout errors. Confirm through-coolant port alignment with the machine spindle coolant supply before tightening the drawbar.