Iscar 4550303 Indexable Boring Bar 22mm Bore Through Coolant

Product Description

The ISCAR 4550303 is an IHAXF-style indexable boring bar designed for precision internal turning and boring operations on CNC lathes and turning centers. With a 22mm minimum bore diameter, a 16mm shank diameter, and a 90mm overall length, this bar is built for tight-bore applications where rigidity and repeatability matter. It accepts TPGX 73.. series triangular inserts secured by screw clamping, and features through-coolant capability to manage chip evacuation and heat at the cutting zone. Licensed machinists and CNC operators working in production or job-shop environments will find this bar suited to close-tolerance internal diameter work.

The 4550303 is intended for boring operations where bore diameters range from 22mm up to 30mm, with a maximum bore depth of 60mm. Its IHAXF toolholder style and ISO 13399 compliance make it compatible with standard tooling management systems. This bar is a fit for both roughing and finishing passes in small-bore internal turning where through-coolant delivery improves tool life and surface finish. It is part of the Itsbore series, which targets compact, high-precision boring applications in metalworking environments.

Key Features

• IHAXF toolholder style with screw-clamp insert holding for secure, repeatable edge positioning
• Accepts TPGX 73.. triangular inserts for versatile grade and geometry selection
• Through-coolant design directs fluid directly to the cutting zone for improved chip control and tool life
• Bore range of 22mm to 30mm with a maximum depth of 60mm suits small-bore production work
• ISO 13399 compliant for integration with digital tooling data and presetter systems
• 16mm shank diameter fits standard boring bar holders and quick-change tooling systems

Compatibility

Designed for use with TPGX 73.. series triangular inserts, insert size code 73, secured via screw clamping. Compatible with standard 16mm boring bar holders and tooling blocks on CNC lathes and turning centers.

Installation Notes

Installation and setup should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the machine is in a safe, locked-out state before mounting or removing the boring bar. Verify shank clamping torque against the machine tool manufacturer specifications for 16mm boring bars. Confirm through-coolant passages are clear and the coolant supply line is properly connected before running the first part.