Browning 1025816 Single Groove Sheave 1.75in Od Cast Iron

Product Description

The BROWNING 1025816 is a finished bore single groove sheave designed for use in belt-drive power transmission systems. It features a 0.625 inch bore diameter and a 1.75 inch outer diameter, machined from cast iron for durability in demanding service environments. The groove is sized to accept 3L and 4L or A-section V-belts, making it a compact, lightweight component suited for fan, blower, and motor drive applications. Weighing 0.35 pounds, it installs easily on standard shaft configurations. HVAC technicians and mechanical contractors use this type of sheave when replacing worn pulleys on blower assemblies or small motor drives.

This sheave is typically used in residential and light commercial HVAC systems, specifically on evaporator blower assemblies, condenser fan drives, and small fractional-horsepower motor applications. The finished bore is ready for installation without additional machining. The single groove design accommodates one V-belt, which is standard on lower-torque, lower-speed blower drive configurations. The compact 1.75 inch OD makes it appropriate for tight equipment cabinets and air handler interiors where clearance is limited.

Key Features

• 0.625 inch finished bore diameter — ready to install on compatible shafts without machining
• 1.75 inch outer diameter with 1.5 inch pitch diameter for 4L or A-section belts
• 1.16 inch pitch diameter for 3L-section belts — dual belt-type compatibility
• Cast iron construction for wear resistance and dimensional stability
• Single groove design suited for single V-belt drive configurations
• Lightweight at 0.35 pounds — easy handling during service calls

Compatibility

Designed as an OEM-style replacement single groove sheave for belt-driven blower and fan motor assemblies using 3L or 4L and A-section V-belts on shafts with a 0.625 inch diameter.

Installation Notes

Installation is performed by qualified HVAC technicians or mechanical contractors. Disconnect and lock out all power to the unit before removing or installing any sheave or belt-drive component. Ensure the shaft diameter matches the 0.625 inch finished bore before pressing or setting the sheave in place, and verify belt alignment with a straightedge after installation to prevent premature belt and bearing wear. Refer to the equipment manufacturer's service manual for drive alignment tolerances.