Browning 1028166 Single Groove Sheave 0.875 in Bore Cast Iron

Product Description

The BROWNING 1028166 is a finished bore single groove sheave designed for use in V-belt drive systems common to HVAC, industrial, and agricultural equipment. Machined from cast iron, this sheave features a 0.875 inch finished bore diameter and a 3.75 inch outer diameter. The pitch diameter is 3.0 inches for 4L or A-style belts, and the overall length through the bore is 1-5/32 inches. Cast iron construction provides the dimensional stability and wear resistance expected in continuous-duty belt drive applications. Installation requires no additional boring or finishing, making it a direct-fit replacement in standard V-belt drive setups.

This sheave is suited for single-groove V-belt drives in residential and light commercial HVAC systems, blower assemblies, fan drives, and general power transmission equipment. It is compatible with 4L and A-series V-belts. HVAC technicians and mechanical contractors commonly use this type of sheave when replacing or re-sizing drive components on air handling units, belt-drive fans, and motor-to-blower assemblies. The finished bore eliminates field machining, reducing installation time on service calls and new installations alike.

Key Features

• Finished bore at 0.875 inches — no additional machining required
• Single groove design accepts 4L or A-series V-belts
• 3.0 inch pitch diameter for accurate belt speed and drive ratio calculations
• 3.75 inch outer diameter with 1-5/32 inch length through bore
• Cast iron construction for dimensional stability and long service life in continuous-duty applications

Compatibility

Designed as an OEM-style replacement single groove sheave for V-belt drive systems using 4L or A-series belts with a 0.875 inch bore shaft.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. De-energize and lock out all power to the equipment before removing or installing any drive components. Verify shaft diameter and keyway dimensions before seating the sheave, and ensure belt tension and alignment are set per the equipment manufacturer specifications after installation. Refer to applicable mechanical and electrical codes for safe work practices on belt drive systems.