Browning 1028174 Single Groove Sheave 1in Bore 3-3/4in Od

Product Description

The BROWNING 1028174 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, this sheave features a 1 inch finished bore diameter and a 3-3/4 inch outer diameter, with an overall length through the bore of 1-5/32 inches. The groove is sized for 4L or A-type V-belts with a pitch diameter of 3.0 inches. At 1.5 pounds, it is compact and suited for light-duty to medium-duty belt drive configurations. Licensed HVAC technicians and mechanical contractors typically install this component during blower assembly, fan drive replacement, or belt drive system upgrades.

This sheave is used in belt drive systems where a single-groove configuration is required, most commonly on residential and light commercial HVAC equipment including air handlers, furnaces, and rooftop units. It is also found in general industrial power transmission setups where 4L or A-series V-belts drive fans, pumps, or blowers. The finished bore eliminates the need for additional machining, allowing direct shaft installation on a 1 inch shaft.

Key Features

• Finished 1 inch bore for direct shaft mounting with no additional machining required
• Single groove design accepts 4L or A-type V-belts
• 3.0 inch belt pitch diameter for precise drive ratio calculations
• Cast iron construction provides durability and wear resistance
• Compact 3-3/4 inch OD and 1.5 pound weight suitable for space-constrained installations
• 1-5/32 inch overall length through bore for standard shaft engagement

Compatibility

Designed as an OEM-style replacement or direct-fit sheave for belt drive systems requiring a single groove, 1 inch bore, 4L or A-type V-belt pulley in residential and light commercial HVAC and mechanical power transmission applications.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all power to the equipment before removing or installing sheaves. Ensure the shaft diameter matches the 1 inch finished bore before pressing or sliding the sheave into position, and verify sheave alignment with a straightedge or laser alignment tool to prevent premature belt wear. Proper belt tension should be set according to the belt manufacturer specifications for 4L or A-series belts.