Browning 1026459 Single Groove Sheave 1 in Bore Cast Iron

Product Description

The BROWNING 1026459 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Cast from iron for durability and dimensional stability, this sheave features a 1 inch finished bore and a 3.95 inch outer diameter. The pitch diameter measures 3.7 inches for 4L or A belt types, and 3.36 inches for 3L belt types. The through-bore length is 1-5/32 inches. It is installed by HVAC technicians and millwrights as part of belt-and-sheave drive assemblies on fans, blowers, and air handling equipment.

This sheave is suited for residential and light commercial HVAC systems where V-belt drives power supply fans and blower assemblies. The single groove configuration accepts one V-belt, making it appropriate for straightforward single-belt drive setups. The finished bore eliminates the need for additional machining prior to installation. BROWNING is a recognized manufacturer of power transmission components, and this sheave is built to standard V-belt pulley dimensions for broad compatibility in replacement and new-installation scenarios.

Key Features

• Finished 1 inch bore — ready to install without additional machining
• 3.95 inch outer diameter with a 3.7 inch pitch diameter for 4L or A belt types
• 3.36 inch pitch diameter for 3L belt types
• Single groove design accepts one V-belt
• Cast iron construction for strength and dimensional stability
• Through-bore length of 1-5/32 inches

Compatibility

Designed as an OEM-style replacement single groove sheave for V-belt drive systems using 3L, 4L, or A series V-belts in HVAC blower and fan drive applications.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright. Disconnect and lock out all power to the drive system before removing or installing any sheave. Ensure the sheave is properly aligned with the mating pulley using a straightedge or laser alignment tool before tensioning the belt. Belt tension should be set per the belt manufacturer's specifications to prevent premature wear or slippage.