Browning 1033299 Two Groove Sheave 0.75 Inch Bore Cast Iron

Product Description

The BROWNING 1033299 is a finished bore two groove sheave designed for use in belt drive systems requiring reliable power transmission. This cast iron pulley features a 0.75 inch bore diameter and a 3.55 inch outer diameter, making it a compact, durable choice for HVAC blower assemblies, industrial equipment, and similar belt-driven applications. The finished bore is ready for immediate installation without additional machining. At 3 pounds, it is built for long service life in demanding environments. Licensed HVAC technicians and mechanical contractors typically specify this component when configuring or replacing V-belt drive trains on air handling equipment.

This sheave is suited for residential and light commercial belt drive systems using Type 4L or A V-belts, with a belt pitch diameter of 2.8 inches for that belt type. The overall length through bore is 1-31/32 inches and the groove width is 1-3/4 inches. It is commonly installed on HVAC blower shafts, fan drives, and comparable rotating equipment where a two groove configuration allows for parallel belt operation or added drive redundancy. The finished bore accepts a 0.75 inch shaft directly without modification.

Key Features

• Finished bore at 0.75 inches — no additional machining required for standard shaft installation
• Two groove design supports dual V-belt drive configurations for increased torque capacity
• Cast iron construction provides durability and resistance to wear under continuous belt load
• Compatible with Type 4L or A V-belts with a pitch diameter of 2.8 inches
• Compact overall length of 1-31/32 inches through the bore suits space-constrained drives
• 3.55 inch OD fits standard HVAC and light industrial blower drive setups

Compatibility

Designed as an OEM-style replacement or new-installation sheave for belt drive systems using Type 4L or A V-belts on 0.75 inch shafts in residential and light commercial HVAC and mechanical equipment.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all power to the drive system before removing or installing any sheave. Verify shaft diameter matches the 0.75 inch finished bore before pressing or sliding the sheave onto the shaft, and use a proper sheave or pulley puller for removal to avoid bearing or shaft damage. Align both sheaves within the belt drive system using a straightedge or laser alignment tool before tensioning the V-belt to the equipment manufacturer's specification.