Browning 1033588 Two Groove Sheave 4-3/4 in Od Cast Iron

Product Description

The BROWNING 1033588 is a finished bore two groove sheave designed for use in V-belt drive systems. Manufactured from cast iron, this sheave features a 1-1/8 inch finished bore and a 4-3/4 inch outside diameter, with a belt pitch B diameter of 4.4 inches and a pitch diameter of 4.0 inches for 4L or A type belts. The through-bore length measures 1-15/32 inches. Weighing 4.25 pounds, it is built for the load demands of HVAC blower assemblies, industrial fan drives, and similar belt-driven equipment. Licensed HVAC technicians and mechanical contractors handle this type of sheave replacement as part of air handler and rooftop unit drivetrain service.

This sheave is suited for residential and light commercial belt drive applications where two-groove V-belt configurations are required. Typical installations include air handler blower sections, ventilation fan drives, and commercial HVAC units using B-section or A-section V-belts. The finished bore accepts a 1-1/8 inch shaft directly, eliminating the need for additional boring before installation. The two-groove design allows dual-belt drive setups that distribute load across both belts for improved power transmission and belt life.

Key Features

• Finished bore at 1-1/8 inches fits shaft directly without additional machining
• Two groove configuration supports dual V-belt drive setups
• 4-3/4 inch outside diameter with 4.0 inch pitch diameter for 4L or A type belts
• Cast iron construction provides durability in continuous-duty blower and fan applications
• Through-bore length of 1-15/32 inches for secure shaft engagement
• Weighs 4.25 pounds for straightforward handling during installation

Compatibility

Designed as an OEM-style replacement sheave for belt drive systems using B-section or 4L/A-section V-belts with a 1-1/8 inch shaft bore requirement.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all power to the drive system before removing the existing sheave or belts. Verify shaft diameter and keyway dimensions before mounting. After installation, check belt tension and sheave alignment per the belt manufacturer specifications before returning the system to service.