Sandvik Coromant 5853217 Indexable Boring Bar Left Hand

Product Description

The SANDVIK COROMANT 5853217 is a solid carbide indexable boring bar in the CoroTurn 107 series, designed for internal turning operations on CNC lathes and turning centers. It features a left-hand cut orientation with a -5 degree lead angle and a neutral rake angle of 0 degrees. The shank measures 1/2 inch in diameter with an overall length of 8 inches, and the minimum bore diameter is 0.5984 inches. Insert retention uses a screw-clamp holding method, providing rigid clamping for consistent depth-of-cut control. Coolant-through capability is built in, supporting chip evacuation and tool life in deep-bore applications. This bar is installed by machinists and CNC operators in precision turning environments.

This boring bar suits internal diameter finishing and semi-finishing in small-bore applications where bore entry clearance is tight. The 0.5984-inch minimum bore diameter makes it appropriate for close-tolerance bore work in production and job-shop settings. The multi-use designation allows it to transition between turning applications without tool changes. It is engineered for use with CCMT 06 02 04 inserts, which are a standard size stocked by most industrial tooling suppliers. The CoroTurn 107 series is a recognized toolholder family used across a broad range of material types and cut depths in CNC turning.

Key Features

• Solid carbide construction for rigidity in small-diameter boring operations
• Left-hand cut with -5 degree lead angle for specific approach requirements
• Coolant-through design for chip evacuation in deep or blind bores
• Screw-clamp insert retention for repeatable insert positioning
• Neutral rake angle (0 degrees) for compatibility across a wide range of workpiece materials
• Multi-use tool designation supports varied internal turning applications

Compatibility

Accepts CCMT 06 02 04 inserts. Toolholder style is E..SCLCR/L-R. Designed for CNC turning centers and lathes equipped to accept a 1/2-inch shank boring bar within the CoroTurn 107 toolholder system.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Disengage the machine spindle and confirm the turret is fully indexed and locked before mounting or removing the boring bar. Use the correct torque driver for the insert screw to avoid stripping the clamping mechanism — refer to the SANDVIK COROMANT insert tightening specification sheet for this series. Verify coolant-through passages are clear and aligned with the machine coolant supply before initiating a cut.