Browning 1033265 Two Groove Cast Iron Sheave 1in Bore

Product Description

The BROWNING 1033265 is a finished bore two groove cast iron sheave designed for V-belt drive systems in HVAC, industrial, and mechanical equipment applications. With a 1 inch bore diameter and a 3.35 inch outer diameter, this sheave accommodates standard B-section or A-section V-belts. The cast iron construction provides durability under continuous load and resistance to wear in belt-driven blower and fan applications. A finished bore means no additional machining is required before installation, making it a direct drop-in component for qualified technicians replacing worn or failed sheaves.

This sheave is suited for residential and light commercial HVAC blower assemblies, exhaust fans, and general-purpose V-belt drive systems. It accepts 4L or A-type belts with a pitch diameter of 2.6 inches and a B-section belt pitch diameter of 3.0 inches. The bore length through the hub measures 1-31/32 inches. HVAC technicians and mechanical contractors typically install this component when servicing belt-driven air handlers, furnace blowers, and ventilation equipment.

Key Features

• Finished bore construction eliminates field machining before installation
• Two groove design supports dual V-belt drive configurations for balanced load transfer
• Cast iron material provides strength and wear resistance in continuous-duty applications
• Compatible with standard 4L or A-type and B-section V-belts
• 1 inch bore diameter with 3.35 inch outer diameter fits common blower shaft sizes
• Bore length of 1-31/32 inches provides adequate hub engagement for secure mounting

Compatibility

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

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all electrical power to the unit before removing or installing any belt-drive components. Ensure the sheave is properly aligned with the mating sheave using a straightedge or laser alignment tool before tensioning belts. Verify set screw torque and belt tension per the equipment manufacturer's service documentation before returning the system to operation.