Iscar 3601276 Indexable Boring Bar Right Hand

Product Description

The ISCAR 3601276 is a right-hand indexable boring bar designed for internal turning operations on CNC lathes and manual turning centers. Built to Isoturn series specifications, it accepts WB.. 520L trigon inserts held by screw or clamp and delivers consistent performance on small-bore applications. The steel shank measures 0.375 inches in diameter with an overall length of 4 inches, allowing reach into bores as small as 0.276 inches at depths up to 0.937 inches. Negative radial and neutral axial rake geometry suits general-purpose ferrous and non-ferrous internal turning. This tool is installed by machinists and toolroom technicians in production and job-shop environments.

The 3601276 targets small-bore internal turning where minimal bore diameter clearance is critical. With a center-to-cutting-edge measurement of 0.14 inches, it maintains precise geometry in tight bore profiles. The 3/8-inch shank is compatible with standard boring bar holders and quick-change tooling systems designed for that shank diameter. Typical applications include finish boring of hydraulic components, valve bodies, and precision-machined housings where bore diameter tolerance and surface finish are tightly controlled. This is a single-use, non-modular tool intended for dedicated boring setups.

Key Features

• Minimum bore diameter of 0.276 inches suits tight, small-bore internal turning applications
• Maximum bore depth of 0.937 inches with a 4-inch overall length for reach and rigidity balance
• Accepts WB.. 520L trigon inserts via screw or clamp holding for secure, repeatable insert indexing
• Right-hand cutting direction with negative radial and neutral axial rake geometry
• Steel shank construction at 0.375 inches diameter for compatibility with standard boring bar holders
• Conforms to ISO 13399 tooling data standards for use with CAM and tool management software

Compatibility

Designed to accept WB.. 520L compatible inserts in a trigon shape. Insert size code 520L. Compatible with standard boring bar holders accepting a 3/8-inch shank diameter. Part of the ISCAR Isoturn series.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. The machine spindle must be fully stopped and the turret de-energized before mounting or indexing inserts. Confirm the shank is properly seated and clamped to the specified holder torque per the machine tool manufacturer guidelines before initiating a cut. Do not exceed the maximum bore depth of 0.937 inches, as overhang beyond design limits increases deflection and risk of insert fracture.