Browning BK50X V-Belt Sheave Pulley 1-Groove 1-1/8-Inch Keyed Bore

The Browning BK50X 1-1/8 in V-Belt Pulley is a finished-bore, cast-iron, single-groove Browning BK sheave designed for A, 4L, B, and 5L belt sections with a 1-1/8 in bore and a 0.25 in keyway. It features a 4.75 in outside diameter, a spoked construction, and an overall width of 1.2813 in with a face width of 0.875 in. The bore length through the pulley is 1.1563 in, and the pitch diameter is 4.2000 in (A) or 4.7000 in (B), reflecting its compatibility across belt configurations. This BK50X model, catalog number BK50X 1 1/8, is built for reliable power transmission in compact drives, and the finished bore means no separate bushing is required for mounting. It weighs about 2.18 lb, making it a sturdy, rigid option for motor-driven systems that demand precise alignment and durable cast-iron construction.