Global Cnc Industries 8835 .750 Boring Bar Sleeve

Product Description

The GLOBAL CNC INDUSTRIES 8835 .750 is a steel boring bar sleeve designed to adapt and support boring bars in lathe and machining center applications. It features a 0.75-inch bore diameter and a 2-inch shank diameter, allowing it to mount a smaller boring bar into a larger tool holder or spindle. At 9 inches overall length with a 2.75-inch bore depth, this sleeve provides rigid support and accurate positioning during internal boring operations. It is typically installed by machinists and CNC technicians working with ferrous and non-ferrous materials on production or job-shop turning equipment.

This boring bar sleeve fits into setups where a 2-inch shank is required but a 0.75-inch boring bar is in use. Common applications include production turning, manual lathe work, and CNC turning centers where tooling adaption is necessary to match available spindle or turret bore sizes. The 1/2-inch thread size accommodates standard set screw retention. Steel construction provides the rigidity and mass needed to minimize chatter and maintain dimensional accuracy over extended runs.

Key Features

• 0.75-inch bore diameter accepts standard 3/4-inch boring bars
• 2-inch shank diameter fits larger tool holders and turret bores
• 9-inch overall length provides extended reach for deep-bore applications
• 2.75-inch bore depth for secure tool engagement and support
• Steel construction for high rigidity and chatter resistance
• 1/2-inch thread size for set screw retention and positive tool locking

Compatibility

Designed as an OEM-style adapter sleeve for use with 0.75-inch boring bars in machine tool setups requiring a 2-inch shank mount. Verify spindle and turret bore dimensions before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and locked out before inserting or removing the sleeve. Clean mating bores and shank surfaces before assembly to ensure proper seating and alignment. Torque set screws to the tooling manufacturer's specification using appropriate hex keys; do not over-tighten, as this can distort the bore and affect tool runout.