Regal Beloit NAK30 Idler Pulley

Regal Beloit NAK30 Idler Pulley is a compact V-belt idler used in Browning/Regal Beloit drive systems, with a 1/2 in bore and a 3.05 in outside diameter, optimized for 4L/A-section belt configurations and designed to ride with standard Regal/Browning idler bushings. It uses a needle-roller bearing set in a cast-iron housing to provide smooth belt guidance and withstand radial loads in small-to-medium power-transmission assemblies, helping maintain belt alignment over time. This NAK30 pulley is specified for 4L/A-section belts and is engineered to fit H-1 1/2 and P1-5/8 idler bushings, which facilitates OEM replacements and field retrofit. The unit typically weighs about 0.88 lb, a factor in the dynamic behavior of belt drives without adding excessive inertia. Catalogs from multiple distributors reference NAK30 Idlers, confirming its role as a standard 1/2-in bore, 3.05-in OD pulley for 4L belt pitches in Browning/Regal Beloit equipment, and this compatibility underpins straightforward cross-reference in repair and maintenance scenarios.