Seco 02829667 Indexable Boring Bar 3/8 in Shank 6 in Oal

Product Description

The SECO 02829667 is a steel indexable boring bar designed for internal turning operations on lathes and turning centers. It accepts a diamond-shaped insert held by a screw-clamp mechanism, with a negative rake angle of 0 degrees and a lead angle of 95 degrees for stable, controlled cuts. The shank diameter measures 0.375 inches and the overall length is 6 inches, giving the bar a rigid cross-section suited for moderate-depth bores. Minimum bore diameter is 0.472 inches, making it appropriate for small-to-mid bore work. A coolant-through design helps clear chips and manage heat at the cutting zone. Licensed machinists, tool and die makers, and CNC lathe operators are the primary installers.

This boring bar is intended for right-hand cutting operations in CNC and manual turning applications. The 95-degree lead angle promotes axial cutting forces, which reduces deflection in deep-bore scenarios. With a center-to-cutting-edge distance of 0.25 inches and compatibility with insert size code 21.5 diamond inserts, the bar fits standard tooling setups on production lathes, tool room lathes, and turning centers used in industrial and job-shop environments. It is a single-application tool and is not rated for multi-use configurations.

Key Features

• Steel shank construction for rigidity during internal turning operations
• Screw-clamp insert holding method for secure, repeatable insert indexing
• Compatible with size code 21.5 diamond-shaped inserts
• Coolant-through design for improved chip evacuation and heat control
• Negative rake, 95-degree lead angle geometry reduces radial cutting forces
• Right-hand cutting direction; minimum bore diameter of 0.472 inches

Compatibility

Designed for use with size code 21.5 diamond-shaped indexable inserts. Confirm insert geometry and seating dimensions against your existing toolholder inventory before ordering.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before changing or indexing inserts. Use the correct torque driver for the screw-clamp insert fastener to avoid seat damage — refer to the insert manufacturer torque specification. Verify shank clamping length meets the machine toolholder minimum engagement requirement before beginning a cut.