Browning 1033414 Two Groove Sheave 3.95in Od Cast Iron

Product Description

The BROWNING 1033414 is a finished bore, two groove V-belt sheave manufactured from cast iron. It carries a 3.95 inch outer diameter with a 1 inch finished bore, and accepts standard B-section or A-section V-belts. The bore is finish-machined and ready to mount without additional line boring, making installation straightforward for HVAC, industrial, and mechanical drive applications. With a belt pitch diameter of 3.2 inches for 4L or A-type belts and a 3.6 inch pitch diameter for B-type belts, this sheave suits a range of drive ratio configurations. It weighs 3.2 pounds and is suited for use in blower drives, fan drives, and similar belt-driven systems.

This sheave is commonly installed in residential and light commercial HVAC blower assemblies, exhaust fan drives, and general mechanical power transmission setups. The two groove configuration allows dual-belt drive arrangements, which increase torque capacity and improve load sharing across the belt span. HVAC technicians, millwrights, and mechanical contractors typically encounter this part when servicing or replacing belt drive components on air handling units, furnace blowers, and ventilation equipment. The finished bore eliminates field machining requirements, reducing installation time on the job.

Key Features

• Finished bore at 1 inch eliminates line boring — mount directly to the shaft
• Two groove design supports dual V-belt drive arrangements for increased torque capacity
• Cast iron construction provides durability in continuous-duty blower and fan drive applications
• Compatible with 4L, A-type, and B-type V-belts
• Overall bore length of 1-15/32 inches provides solid shaft engagement
• UNSPSC Code 31171804 — classifies as a sheave or pulley component for procurement systems

Compatibility

Designed as an OEM-style replacement sheave for residential and commercial belt-drive systems requiring a two groove sheave with a 1 inch finished bore and approximately 3.95 inch outer diameter. Accepts standard A-section, 4L, and B-section V-belts.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright. Disconnect and lock out all power to the drive system before removing or installing sheave components. Verify shaft diameter and keyway dimensions match the bore and hub specifications before pressing or sliding the sheave onto the shaft. Check belt tension and alignment after installation per standard drive system practices to prevent premature belt or bearing wear.