The L91 adjustable belt grinder with three-phase motor and bench support is designed for production departments and workstations where the grinding area needs to be closer to the operator while preserving structural rigidity, workpiece control and consistent performance. The dedicated bench support replaces the standard base and makes the machine especially suitable for technical work on small parts, mechanical components, tools, turned pieces and applications that require frequent transitions between dimensional inspection and surface finishing. The adjustable arm extends the working range and allows accurate belt contact on edges, profiles, dimensions and shaped surfaces. The 400 V three-phase motor delivers 2/3 HP and runs at 1400 or 2800 rpm, generating belt speeds of 15 or 30 m/s. This dual-speed arrangement makes the L91 effective both for fast burr removal and for more controlled operations where surface regularity and repeatability matter. The 50 mm belt with 2000/2500 mm development and the Ø200 x 50 mm wheel provide stable abrasive action, good heat dissipation and proper workpiece support. A 72 dB noise level helps integrate the machine into organised industrial environments. This bench-supported configuration suits industrial maintenance, precision workshops, automotive lines and machine builders looking for a compact yet capable grinding station. Dimensions of 60x90x105 cm and a weight of 85 kg ensure solid installation.