Browning 1027150 Single Groove Sheave 1 in Bore Cast Iron

Product Description

The BROWNING 1027150 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Cast from iron for durability, this sheave features a 1-inch finished bore and a 7-1/4-inch outer diameter with a belt pitch B diameter of 7.4 inches. The groove accepts standard A or 4L belt profiles with a 7.0-inch pitch diameter, and also accommodates 3L belt profiles at a 6.66-inch pitch diameter. The overall length through bore measures 1-15/32 inches and the face width is 3/4 inch. Installation is handled by HVAC technicians, millwrights, or mechanical contractors in belt-drive fan and blower assemblies.

This sheave fits standard V-belt drive configurations found in residential and light commercial HVAC fan systems, blower assemblies, and general-purpose power transmission setups. It is suited for applications requiring a single-groove, fixed-bore drive component where precise belt alignment and consistent pulley geometry are critical to system efficiency and belt life. The finished bore eliminates the need for secondary machining before installation.

Key Features

• Finished 1-inch bore — ready to install without additional machining
• Single groove design accepts A, 4L, and 3L V-belt profiles
• 7.4-inch belt pitch B diameter for accurate drive ratio calculation
• Cast iron construction for wear resistance and dimensional stability
• 3/4-inch groove face width for positive belt engagement
• Overall bore length of 1-15/32 inches for sufficient shaft engagement

Compatibility

Designed as a finished bore single groove sheave for standard V-belt drive systems using A, 4L, or 3L cross-section belts. Confirm shaft diameter and belt profile before installation.

Installation Notes

Installation is performed by qualified HVAC technicians or mechanical trades with the system fully de-energized and locked out per applicable OSHA lockout/tagout procedures. The sheave should be positioned on the shaft to align with the mating pulley to prevent belt tracking issues and premature wear. Use a straightedge or laser alignment tool to verify pulley alignment before tensioning the belt. Do not force the sheave onto an undersized shaft — verify bore and shaft tolerance before assembly.