Daikin 371200 Fixed Sheave BK80 1 Inch Bore V-belt

Product Description

The DAIKIN 371200 is a fixed sheave designed for use in commercial HVAC fan drive assemblies. This is a Browning BK80 style single-groove V-belt sheave with a 1-inch bore. Fixed sheaves maintain a constant drive ratio and are commonly used on supply or return fan shafts in air handling units and rooftop equipment. Licensed HVAC technicians and mechanical contractors install this component during scheduled belt drive maintenance or when replacing a worn or damaged sheave. It ships as factory-new OEM equipment and carries a 1-year manufacturer warranty.

This sheave is used in commercial and light-industrial HVAC applications where a single-groove V-belt fan drive is specified. It is a direct OEM replacement sourced from Daikin McQuay and carries the Browning BK80 designation. Typical installations include air handling units and packaged rooftop equipment that use standard A or B-section V-belts. This part replaces legacy part numbers 735037438, 003712A-00, 350A377H30, 735037730, and 0002740360.

Key Features

• Fixed sheave design maintains a constant belt drive ratio
• Browning BK80 style single-groove V-belt pulley
• 1-inch bore fits standard fan shaft diameters
• Factory-new OEM Daikin McQuay replacement part
• 1-year manufacturer warranty
• Replaces multiple legacy part numbers including 735037438 and 003712A-00

Compatibility

This sheave is an OEM replacement for Daikin McQuay air handling units and rooftop equipment that originally used part numbers 735037438, 003712A-00, 350A377H30, 735037730, or 0002740360.

Installation Notes

Installation should be performed by a qualified HVAC technician or licensed mechanic familiar with belt drive systems. Disconnect and lock out all electrical power to the unit before removing or installing any drive components. Ensure the sheave bore is properly aligned with the shaft and secure the set screw to the shaft keyway before tensioning the belt. Verify belt tension and sheave alignment after installation to prevent premature wear.