Browning 1026129 Single Groove Sheave 2.8in Od Cast Iron

Product Description

The BROWNING 1026129 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. The sheave features a 0.5 inch finished bore and a 2.8 inch outer diameter, with a belt groove machined to a 3 inch pitch diameter for standard B-section or A-section belts, and a 2.6 inch pitch diameter for 4L or A-type belt configurations. Constructed from cast iron, it delivers reliable wear resistance and dimensional stability under continuous load. The overall bore length through the hub measures 15/16 inches. The part weighs 0.75 pounds and is sized for single belt drive arrangements. Licensed HVAC technicians and millwrights commonly install this sheave in blower and fan drive assemblies.

This sheave is suited for residential and light commercial HVAC blower sections, exhaust fans, and general-purpose belt drive setups requiring a compact, single groove pulley. The 21/32 inch groove width accommodates standard A or 4L cross-section belts. Its finished bore accepts a 0.5 inch shaft directly without additional machining. It is a common replacement component in air handling units, furnace blower assemblies, and ventilation fan drives where a B or A-section single groove drive is specified.

Key Features

• Finished 0.5 inch bore — ready to install on a standard 0.5 inch shaft with no additional machining
• 2.8 inch outer diameter with 3 inch pitch diameter for B or A-section belts
• Compatible with 4L or A-type belts at 2.6 inch pitch diameter and 3L belts at 2.26 inch pitch diameter
• 21/32 inch groove width sized for standard V-belt cross sections
• Cast iron construction for dimensional stability and wear resistance
• Compact single groove design suited for space-constrained blower and fan drive applications

Compatibility

Designed as an OEM-style replacement single groove sheave for residential and light commercial belt drive systems using standard A-section, B-section, 4L, or 3L V-belts on a 0.5 inch shaft.

Installation Notes

Installation is typically performed by a licensed HVAC technician or qualified mechanic. Disconnect and lock out all electrical power to the unit before removing or installing any belt drive components. Verify shaft diameter and keyway dimensions match the sheave bore before pressing or securing the sheave. Check belt tension and alignment per the drive manufacturer specifications after installation to prevent premature belt or bearing wear.