Browning 1033349 Two Groove Sheave 3.75 in Od Cast Iron

Product Description

The BROWNING 1033349 is a finished bore two groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical equipment applications. Cast iron construction provides durability under continuous load and resists wear in demanding environments. The sheave features a 0.875 inch finished bore and a 3.75 inch outer diameter, with a B-section belt pitch diameter of 3.4 inches and a 4L or A-section pitch diameter of 3.0 inches. The through-bore length measures 1-31/32 inches. Licensed HVAC technicians and millwrights install this sheave when servicing belt-driven blower assemblies, air handlers, and similar rotating equipment.

This two groove sheave is suited for residential and light commercial V-belt drive applications, including belt-driven blower wheels, fan assemblies, and pump drives. It is compatible with standard B-section and 4L or A-section V-belts and fits shafts with a 0.875 inch diameter. The finished bore is ready for installation without additional machining, making it a direct drop-in for replacement or new drive system builds.

Key Features

• Finished bore ships ready for installation — no additional boring required
• Two groove design supports dual V-belt drive configurations for balanced load distribution
• Cast iron body provides strength and long service life under continuous belt load
• Compatible with both B-section (3.4 inch pitch diameter) and 4L or A-section (3.0 inch pitch diameter) V-belts
• Through-bore length of 1-31/32 inches accommodates standard shaft configurations
• UNSPSC Code 31171804 for procurement and catalog reference

Compatibility

Designed as an OEM-style replacement two groove V-belt sheave for belt-driven blower and fan drive systems using standard B-section or 4L and A-section V-belts on 0.875 inch diameter shafts.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright. Disconnect and lock out all electrical power to the equipment before removing or installing any sheave. Confirm shaft diameter and keyway dimensions match the finished bore before seating the sheave, and verify belt tension and alignment after installation to prevent premature wear. Refer to the drive system manufacturer specifications and applicable ANSI or OSHA standards for safe belt drive service procedures.