Browning 1028141 Single Groove Sheave 3-3/4 in Od Cast Iron

Product Description

The BROWNING 1028141 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 5/8 inch finished bore, a 3-3/4 inch outer diameter, and a belt pitch diameter of 3.0 inches for Type 4L or A belts. Cast iron construction provides durability and dimensional stability under continuous service. The overall length through the bore measures 1-5/32 inches, and the sheave width is 7/8 inch. This component is installed by HVAC technicians, millwrights, and mechanical contractors during blower and fan drive assemblies.

This sheave is suited for single-groove V-belt drive setups in residential and light commercial HVAC air handlers, blowers, and fan assemblies. It accepts standard Type 4L or A V-belts and is appropriate for applications requiring a compact, finished bore pulley without additional machining. The finished bore is ready to install directly onto a 5/8 inch shaft, making field replacement straightforward in time-sensitive service calls.

Key Features

• Finished bore at 5/8 inch — no additional machining required for standard shaft fitment
• 3.0 inch pitch diameter matched to Type 4L or A V-belts
• Cast iron construction for resistance to wear and deformation under belt load
• Single groove configuration for straightforward single-belt drive setups
• Compact 7/8 inch width suits space-constrained blower and fan assemblies
• UNSPSC Code 31171804 for procurement and catalog matching

Compatibility

Designed as an OEM-style replacement single groove sheave for residential and light commercial blower and fan drive systems using Type 4L or A V-belts with a 5/8 inch shaft bore.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright. Disconnect and lock out power to the unit before removing or installing any drive components. Verify shaft diameter matches the 5/8 inch finished bore before mounting, and ensure the replacement sheave is aligned with the mating sheave using a straightedge or laser alignment tool to prevent premature belt wear. Inspect the V-belt for wear and replace if necessary when servicing the sheave.