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The HORN R105182345TN35 is a solid carbide profile boring bar designed for internal turning and boring operations on CNC lathes and machining centers. It features a right-hand cutting direction and a TiN (titanium nitride) finish coating for improved wear resistance and extended tool life. With a minimum bore diameter of 0.197 inches and a maximum bore depth of 0.984 inches, this bar handles tight-bore profiling work where rigidity and dimensional accuracy are critical. The 4.00 mm shank diameter and 1.378 inch overall length make it well suited for small-bore applications. Machinists and toolroom technicians are the primary installers.
This profile boring bar is used in precision machining environments where small internal diameters and controlled corner radii are required. It is appropriate for both production and job-shop settings on ferrous and non-ferrous workpiece materials. The 0.008 inch corner radius provides a defined edge geometry for profiling grooves, chamfers, and contoured internal features. It is typically run on CNC turning centers or Swiss-style lathes where small-bore tooling is required. Minimum order quantity is 2 units; package quantity is 1.
Designed as an OEM-style replacement or direct tooling selection for small-bore profile boring applications requiring a 4.00 mm shank diameter and right-hand cut geometry.
Installation should be performed by a qualified machinist or toolroom technician. Secure the shank fully in a compatible boring bar holder and verify runout before cutting. Confirm spindle and coolant are off before handling or adjusting the tool. Do not exceed the rated maximum bore depth of 0.984 inches, as deeper cuts increase deflection risk in solid carbide tooling.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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