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The BANDO 4L520 is a fractional horsepower (FHP) V-belt designed for light-duty power transmission applications. Built to RMA standards, this 4L-section belt measures 52 inches in outside length and 0.5 inches in width with a thickness of 0.31 inches. Constructed from rubber with ozone-resistant properties, it delivers reliable performance in belt-driven equipment subject to environmental exposure. It is installed by HVAC technicians, equipment mechanics, and maintenance professionals on motors and driven components requiring a standard fractional horsepower belt drive.
The BANDO 4L520 fits a wide range of residential and light commercial belt-driven equipment. Common applications include HVAC blower assemblies, small air handlers, fans, and general-purpose machinery where a standard 4L-section FHP V-belt is specified. This belt is appropriate for systems calling out a 52-inch outside length in the 4L cross-section, making it a direct replacement in many OEM and aftermarket drive configurations.
Designed as an OEM-style replacement for equipment specifying a standard 4L-section fractional horsepower V-belt with a 52-inch outside length.
Installation should be performed by a qualified HVAC technician or equipment mechanic. Disconnect and lock out all power to the unit before removing or installing the belt. Never pry a V-belt over a sheave with sharp tools, as this can damage the belt cords and shorten service life. Verify sheave alignment and tension according to the equipment manufacturer's specifications before returning the unit to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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