Global Cnc Industries 8822 .375 Boring Bar Sleeve

Product Description

The GLOBAL CNC INDUSTRIES 8822 .375 is a steel boring bar sleeve designed to reduce the bore diameter of a machine tool holder, allowing a smaller boring bar shank to seat securely in a larger spindle or turret pocket. With a 0.375-inch bore diameter and a 1.5-inch shank diameter, this sleeve bridges the size gap between a standard tool holder and a smaller boring bar. The overall length of 7 inches and a 2-inch bore depth give machinists the clearance needed for typical turning and boring operations on CNC lathes and machining centers. Installation is performed by qualified machinists or toolroom technicians.

This boring bar sleeve is suited for use in CNC turning centers, engine lathes, and machining centers where a 1.5-inch shank tool holder must accept a 0.375-inch boring bar. It is a direct fit for shops running standard imperial tooling setups. The 7-inch overall length accommodates applications that require reach into deeper bores while maintaining rigid bar support. The steel construction handles the cutting forces and vibration typical of internal diameter turning and boring operations in production and job-shop environments.

Key Features

• 0.375-inch bore diameter accepts standard 3/8-inch boring bars
• 1.5-inch shank diameter fits common CNC lathe and machining center tool holders
• 7-inch overall length provides reach for deeper boring applications
• 2-inch bore depth ensures secure bar engagement and reduces chatter
• Steel construction delivers rigidity and durability under continuous cutting loads
• Thread size of 3/8 inch for clamping or set-screw retention

Compatibility

Designed as an OEM-style replacement or retrofit sleeve for CNC lathes and machining centers equipped with 1.5-inch shank tool holders requiring a 0.375-inch bore reduction.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine powered down, spindle locked, and all stored energy released per the facility lockout/tagout procedure. Ensure the sleeve bore and shank mating surfaces are clean and free of chips or burrs before seating. Use the appropriate set-screw or clamping torque per your tool holder manufacturer specifications. Verify tool runout with a dial indicator before returning the machine to production.