Browning 1VL40-7 Variable Pitch Timing Belt Pulley

Browning 1VL40-7 is a cast-iron, single-groove variable-pitch pulley from Browning’s VL Series, designed for 3L/4L/5L/A/B belt sections and finished with a keyed bore for secure shaft mounting. It features a 7/8 inch bore and a 3.750 inch outside diameter, delivering a compact footprint suitable for space-constrained drive assemblies while maintaining Browning’s reliability in variable-pitch pulleys. In operation, the VL Series pulley shifts belt engagement along the groove to alter the effective pitch diameter, delivering adjustable drive ratios, smoother speed transitions, and improved belt life in many belt-drive power transmission or motion-control systems. With its 1-groove configuration and precisely finished bore, this Browning pulley is compatible with standard cross sections for 3L/4L/5L/A/B belts and integrates into common shaft-mounting schemes for reliable, maintenance-friendly belt drives. The 1VL40-7 is part of a broad catalog of variable-pitch sheaves, making it easy to match to existing Browning components and tailor pulley selection to specific drive ratios and belt sizes.