Browning 1027911 Single Groove Sheave 2.7in Od 5/8in Bore

Product Description

The BROWNING 1027911 is a finished bore single groove sheave designed for use in belt drive systems common to HVAC, industrial, and mechanical power transmission applications. It features a 2.7-inch outer diameter and a 5/8-inch finished bore, machined from cast iron for durability and dimensional stability. The sheave accepts A-section or 4L-type V-belts, with a pitch diameter of 2.1 inches and a belt pitch B diameter of 2.5 inches. The groove width measures 13/16 inches. Weighing 0.7 pounds, this compact sheave is a direct-install component requiring no additional bore preparation.

This sheave is suited for light-duty belt drive applications in residential and light commercial HVAC systems, fans, blowers, and small motor drive assemblies. It is typically installed where a single V-belt drive is required between a motor shaft and a driven component such as a blower wheel or pump. The 5/8-inch finished bore makes it ready for direct mounting on standard motor or equipment shafts of the same diameter without additional machining.

Key Features

• Finished bore requires no additional machining before installation
• Cast iron construction for strength and wear resistance in belt drive service
• Compatible with A-section and 4L-type V-belts
• 2.7-inch OD with 2.1-inch pitch diameter for accurate belt speed calculations
• 13/16-inch groove width sized for standard V-belt profiles
• Lightweight at 0.7 pounds for easy single-tech installation

Compatibility

Designed as an OEM-style replacement or service sheave for single V-belt drive systems using A-section or 4L-type belts with a 5/8-inch shaft diameter.

Installation Notes

Installation is typically performed by a licensed HVAC technician or millwright. Disconnect and lock out all power to the equipment before removing the existing sheave or belt. Verify shaft diameter matches the 5/8-inch finished bore before mounting, and ensure proper belt tension and sheave alignment after installation to prevent premature belt or bearing wear. Follow applicable ANSI and local mechanical codes for belt drive service procedures.