Browning 1027135 Single Groove Sheave 0.75 in Bore 7.25 in Od

Product Description

The BROWNING 1027135 is a finished bore single groove sheave designed for use in V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Cast from iron for durability, this sheave features a 0.75 inch finished bore and a 7.25 inch outer diameter. The bore length through the hub measures 1-15/32 inches. It is sized to accept standard A or 4L cross-section belts and is installed by HVAC technicians, millwrights, and mechanical contractors on belt-driven fans, blowers, and motors where reliable torque transfer is required.

This sheave is suited for residential and light commercial HVAC blower assemblies, exhaust fans, and general-purpose belt drive equipment. The finished bore is ready for installation without additional machining. It accommodates 4L and A-type belts at a 7.0 inch pitch diameter, and 3L-type belts at a 6.66 inch pitch diameter, making it compatible with a range of standard V-belt drive configurations commonly found in air handling and ventilation equipment.

Key Features

• Finished bore — no additional machining required before installation
• Single groove design for straightforward single-belt drive setups
• Cast iron construction for wear resistance and dimensional stability
• 0.75 inch bore diameter fits standard motor and blower shaft sizes
• Compatible with 4L, A, and 3L cross-section V-belts
• Belt pitch diameter of 7.0 inches for 4L and A belts; 6.66 inches for 3L belts

Compatibility

Designed as an OEM-style replacement single groove sheave for V-belt drive systems using 4L, A-type, or 3L-type belts with a 0.75 inch shaft bore.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all power to the driven equipment before removing or installing any sheave. Verify shaft and bore dimensions before mounting, and ensure the sheave is properly aligned with the mating sheave to prevent premature belt wear. Torque all set screws and fasteners per standard shop practice for the shaft diameter involved.