Browning 1028216 Single Groove Sheave 3.95in Od Cast Iron

Product Description

The BROWNING 1028216 is a finished bore single groove sheave designed for V-belt drive applications in HVAC, industrial, and mechanical systems. It features a 3.95 inch outside diameter, a 0.75 inch finished bore, and a 0.875 inch face width. Cast iron construction provides durability under continuous belt-load cycling. The sheave accepts 4L or A-type V-belts with a pitch diameter of 3.2 inches and a belt pitch B diameter of 3.6 inches. At 1.8 pounds, it is a compact, direct-replacement drive component for blower and fan assemblies in air handling systems. Licensed HVAC technicians and mechanical trades professionals install this component during blower drive maintenance or motor replacement service.

This sheave fits single V-belt drive configurations common in residential and light commercial HVAC blower assemblies, exhaust fans, and industrial drive systems requiring an A or 4L belt profile. The 0.75 inch finished bore is machined to final tolerance and ready to install on a matching motor or driven shaft without additional boring. The 3.95 inch OD makes it appropriate for moderate-speed blower drive ratios when paired with the correct motor sheave and belt length. Confirm shaft diameter, belt section, and required pitch diameter before ordering to ensure drive compatibility.

Key Features

• 0.75 inch finished bore — ready to install, no additional machining required
• 3.95 inch outside diameter with 3.2 inch pitch diameter for 4L or A-type V-belts
• Single groove design for standard single V-belt drive configurations
• Cast iron construction for durability under sustained rotational and belt loads
• 0.875 inch face width compatible with standard A and 4L belt widths
• Lightweight at 1.8 pounds for straightforward field installation

Compatibility

Designed as an OEM-style replacement single groove sheave for single V-belt drive systems using A or 4L belt profiles with a 0.75 inch shaft bore.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical trades professional. Disconnect and lock out all electrical power to the drive system before removing the existing sheave or belt. Verify shaft diameter, keyway dimensions, and set screw engagement before torquing the sheave to the shaft. Inspect belt condition and tensioning after installation per the equipment manufacturer drive specifications.