Kyocera OTM87663 Indexable Boring Bar Right Hand Steel

Product Description

The KYOCERA OTM87663 is a steel-body indexable boring bar engineered for internal boring and facing operations on CNC lathes and turning centers. It carries a DCLN toolholder style with a 1 inch shank diameter and an overall length of 12 inches. The bar accepts CNMG 43 series inserts secured by screw clamping and runs a negative rake angle of -12 degrees, a lead angle of 5 degrees, and a center-to-cutting-edge dimension of 0.64 inches. A coolant-through design delivers cutting fluid directly to the insert tip, supporting higher speeds and longer insert life in deep-bore applications. Licensed KYOCERA part number A16TDCLNR4 in the DBCB series.

This boring bar is sized for right-hand cut applications requiring a minimum bore diameter of 1.25 inches and a maximum bore depth of 1.575 inches. It is a single-insert toolholder suited for finish and semi-finish boring of steel, cast iron, and similar workpiece materials on production turning equipment. The combination of screw clamping and a 0.5 inch inscribed-circle insert provides rigid insert seating with straightforward indexing during setup. Machinists working in production shops, job shops, and maintenance environments will find this bar useful for tight-tolerance internal diameter work.

Key Features

• DCLN toolholder style accepts CNMG 43 series diamond-shaped inserts with 0.5 inch inscribed circle
• Screw clamping insert retention for rigid, repeatable positioning
• Coolant-through capability for temperature control and chip evacuation in deep bores
• Negative rake angle of -12 degrees suitable for interrupted cuts and hard materials
• Right-hand cut orientation; single insert design simplifies setup and indexing
• Steel body construction balances rigidity and machinability for standard bore diameters

Compatibility

Compatible with CNMG 43 series diamond inserts featuring a 0.5 inch inscribed circle and 0.1875 inch thickness. Designed for use on CNC lathes and turning centers with boring and facing capability requiring a right-hand cut toolholder in the DCLN style.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down the spindle and engage the machine lockout before mounting or removing the boring bar from the turret or tool block. Use the appropriate torque specifications supplied by the machine tool manufacturer when securing the shank. Follow insert manufacturer guidelines for insert indexing and replacement, and verify coolant-through line connections before returning the machine to operation.