Browning 1026772 Single Groove Sheave 5.45in Od Cast Iron

Product Description

The BROWNING 1026772 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Manufactured from cast iron, this sheave features a 5.45-inch outer diameter and a 0.625-inch finished bore, making it a ready-to-install replacement or new-installation component. The groove is sized for standard B-section or A-section V-belts, with a belt pitch diameter of 5.2 inches. At 2.3 pounds, it is a compact, durable unit suited for belt-driven blower, fan, and pump assemblies. Licensed HVAC technicians and mechanical contractors install this sheave in motor and driven-equipment configurations requiring a single-groove fixed-bore pulley.

This sheave is used in residential and light commercial belt-drive applications including air handling units, blowers, exhaust fans, and pump drives. The finished bore eliminates machining at the job site, allowing direct shaft installation where the shaft diameter matches the 0.625-inch bore. It is also compatible with 3L-section belts at a pitch diameter of 4.86 inches, giving it flexibility across common light-duty V-belt configurations. Typical installations involve pairing this sheave with a motor sheave and a matched V-belt to establish the required drive ratio.

Key Features

• Cast iron construction for durability in continuous-duty belt drive service
• 5.45-inch outer diameter with a 5.2-inch pitch diameter for B or A-section belts
• Compatible with 3L-section belts at 4.86-inch pitch diameter
• Finished 0.625-inch bore — no machining required for shaft installation
• Single groove design for straightforward one-belt drive configurations
• Groove face width of 0.75 inches accommodates standard V-belt profiles

Compatibility

Designed as an OEM-style replacement or direct-install single groove sheave for belt-driven HVAC blower, fan, and pump assemblies requiring a 0.625-inch bore and B, A, or 3L-section V-belt fitment.

Installation Notes

Installation is typically performed by licensed HVAC technicians or mechanical contractors. Disconnect and lock out all electrical power to the motor before removing or installing any sheave or belt. Ensure the shaft diameter matches the 0.625-inch finished bore and that sheave alignment is checked with a straightedge across both sheave faces before tensioning the belt. Follow the drive manufacturer and applicable safety standards for belt tension and sheave seating.