
Bt50 Fmb Face Mill Tool Holder, Exquisite Workmanship, Diamond Arc Fillet, Stable Clamping for CNC Milling Machine. Complies with JIS MAS 403 BT taper shank standard, perfectly matched with BT50 CNC machining center spindles. Uses ER elastic collet for clamping, compatible with end mills, drills and taps for multi-scene machining. High-rigidity alloy steel body with heat treatment, high hardness, wear-resistant and long service life. Ultra-low runout accuracy, ensures stable cutting and excellent workpiece surface finish. Fine dynamic balance performance, effectively reduces vibration during high-speed machining. Strict assembly sequence for safe clamping: install collet into nut first, then insert cutting tool and lock onto the holder body. Requires special spanner for tightening, avoids damage to tool holder caused by improper tools. Multiple lengths and specifications available, including extended type to meet deep cavity machining demands. Precise taper grinding with smooth surface, reliable positioning and strong clamping force. Wide applicability for heavy-duty milling, drilling and tapping in mold, mechanical parts processing.