Browning 1027432 Single Groove Sheave 0.75 in Bore Cast Iron

Product Description

The BROWNING 1027432 is a finished bore single groove sheave designed for use with V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Cast from iron for durability under continuous load, this sheave features a 0.75 inch finished bore diameter and a 10.25 inch outside diameter. The belt pitch diameter measures 10.4 inches, with a 10.0 inch pitch diameter for 4L and A-type belts. The bore length through the hub measures 1-15/32 inches. Licensed HVAC technicians and millwrights install this component during blower and fan drive assemblies where precise pulley sizing is required for correct belt speed and tension.

This sheave is suited for residential and light commercial HVAC blower assemblies, exhaust fans, and general mechanical drive systems that use standard V-belts. It accepts 3L, 4L, and A-type V-belts, making it a practical fit across a range of single-belt drive configurations. The finished bore allows direct shaft installation without additional machining, reducing installation time in the field.

Key Features

• Finished bore — no additional machining required for shaft installation
• 0.75 inch bore diameter fits common blower and fan shaft sizes
• 10.25 inch outside diameter with 10.4 inch belt pitch diameter
• Compatible with 3L, 4L, and A-type V-belts
• Cast iron construction for strength and resistance to wear under continuous belt load
• Single groove design for straightforward single-belt drive configurations

Compatibility

Designed as an OEM-style replacement or direct installation sheave for single V-belt drive systems using 3L, 4L, or A-type belts in residential and commercial HVAC blower and fan applications.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright. Disconnect and lock out all power to the drive system before removing or installing any sheave or belt. Verify shaft diameter and keyway dimensions before mounting, and ensure proper belt tension and pulley alignment after installation to prevent premature belt wear. Follow applicable OSHA and equipment manufacturer guidelines for belt drive service.