Browning 1033307 Two Groove Sheave 3.55in Od Cast Iron

Product Description

The BROWNING 1033307 is a finished bore, two groove cast iron sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. With an outside diameter of 3.55 inches and a finished bore diameter of 7/8 inch, this sheave is ready to mount without additional machining. It carries a belt pitch diameter of 3.2 inches for standard B-section or A-section belts, and a 4L or A belt pitch diameter of 2.8 inches. The through-bore length measures 1-31/32 inches. At 2.9 pounds, this cast iron sheave offers solid construction suited for moderate-speed belt drive installations.

This sheave fits residential and light commercial belt-drive systems where a two groove configuration is required to drive blower wheels, fans, pumps, or other rotating equipment. It is commonly installed on motor output shafts or driven equipment shafts in air handling units, ventilation systems, and general mechanical drive assemblies. The finished bore and standard belt groove profiles make it a direct drop-in choice for replacement or new drive system builds using B-section or A-section V-belts.

Key Features

• Two groove design accommodates dual V-belt drive configurations
• Finished bore of 7/8 inch — no additional machining required
• Outside diameter of 3.55 inches with a belt pitch diameter of 3.2 inches
• Compatible with 4L or A belt type at 2.8 inch pitch diameter
• Cast iron construction for durability in continuous-duty drive applications
• Through-bore length of 1-31/32 inches for proper shaft engagement

Compatibility

Designed as an OEM-style replacement or upgrade sheave for two-groove V-belt drive systems using standard B-section or A-section belts in residential and light commercial mechanical applications.

Installation Notes

Installation is typically performed by a licensed HVAC technician or mechanical tradesperson. Disconnect and lock out all power to the drive system before removing or installing any sheave. Ensure the shaft diameter matches the 7/8 inch finished bore and that a correctly sized keyway and set screw are used to secure the sheave to the shaft. After installation, verify belt tension and alignment per the belt manufacturer's guidelines before returning the system to service.