Browning 1033158 Two Groove Sheave 1-1/8 in Bore Cast Iron

Product Description

The BROWNING 1033158 is a finished bore two groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Cast iron construction provides rigidity and resistance to wear under continuous belt loading. The sheave features a 1-1/8 inch finished bore diameter and a 2.95 inch outer diameter, with a belt pitch diameter of 2.6 inches for B-section or A-section belts. The pitch diameter for 4L or A-type belts is 2.2 inches. Overall length through the bore measures 1-31/32 inches. This part is installed by HVAC technicians and mechanical contractors during blower assembly, fan drive, or belt-drive equipment service.

Finished bore two groove sheaves like the BROWNING 1033158 are commonly used in residential and light commercial HVAC blower assemblies, exhaust fans, and belt-driven equipment where dual V-belt configurations are required. The finished bore accepts standard 1-1/8 inch shafting without additional machining, making field installation straightforward. Compatible with B-section and A-section V-belts as well as 4L belt profiles, this sheave fits a wide range of OEM and replacement belt-drive configurations found across heating, ventilation, and air conditioning equipment.

Key Features

• Finished bore design accepts 1-1/8 inch shaft diameter with no additional machining required
• Two groove configuration supports dual V-belt drive arrangements
• Compatible with B-section, A-section, and 4L belt profiles
• Cast iron construction for durability under continuous belt tension and load cycling
• Belt pitch diameter of 2.6 inches suits standard blower and fan drive ratios
• Compact overall bore length of 1-31/32 inches fits space-constrained drive assemblies

Compatibility

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

Installation Notes

Installation is typically performed by licensed HVAC technicians or millwrights. Disconnect and lock out all electrical power to the equipment before removing or installing any belt-drive components. Ensure the shaft is clean and free of burrs before seating the sheave, and verify set screw engagement against the shaft keyway per standard mechanical practice. After installation, check belt tension and alignment before returning the unit to service.