Guhring 303559352 GT110.4791.020.25.95.R.U1 20mm Carbide Internal Grooving Bar

This is a new Guhring GT110.4791.020.25.95.R.U1 (item# 303559352) solid carbide internal grooving boring bar from the Guhring GT110 Grooving Systems line, manufactured in Germany. Decoding the part number: GT110 = product family (GT110 solid carbide internal grooving bar); 4791 = Guhring geometry/series code for the GT110 line; 020 = 20 mm shank diameter; 25 = 25 mm minimum bore diameter; 95 = 95 mm overall usable/projection length; R = right-hand cut; U1 = uncoated (bright) carbide grade (submicron carbide substrate). The bar features a full-round cylindrical shank with an integrated solid carbide cutting tip ground to a single-point internal grooving geometry, visible in the photos as a relieved flat face with a sharp leading edge suitable for internal grooving, undercutting, and recessing operations on CNC lathes and turning centers. The black oxide finish on the shank body provides corrosion resistance, while the uncoated (U1) carbide tip is optimized for non-ferrous, aluminum, and precision finishing applications where a sharp, uncoated edge is preferred. Compatible with standard 20 mm round-shank boring bar holders and quick-change tooling systems accepting Ø20 mm shanks.

Product Specifications