Jason Industrial B57 Rubber V-belt 5/8 X 60 Inch

Product Description

The JASON INDUSTRIAL B57 is a B-section rubber V-belt designed for industrial power transmission applications. Measuring 5/8 inch wide with a 60-inch outside circumference, this belt transfers rotational power between sheaves and pulleys in a wide range of mechanical drive systems. It is constructed from black rubber compound and built to handle the friction, heat, and tensile stress typical of continuous-duty industrial environments. HVAC technicians, millwrights, and maintenance professionals install this belt on blowers, fans, compressors, and general-purpose drive assemblies where a standard B-section profile is specified.

The B57 suits residential and light commercial HVAC equipment as well as industrial machinery that calls for a B-section V-belt. Common applications include belt-drive air handlers, centrifugal blowers, pump drives, and agricultural or shop equipment using matched B-section sheave sets. It is sold in packages of 20 belts per unit of measure, making it practical for service fleets and facilities that stock spares for preventive maintenance programs.

Key Features

• Standard B-section profile: 5/8 inch wide, compatible with B-section sheaves and pulley grooves
• 60-inch outside circumference for correct fitment on B57-specified drive configurations
• Black rubber construction resists heat, oil splash, and the mechanical fatigue of continuous belt-drive operation
• Sold in a 20-belt package, supporting bulk stocking for fleet and facilities maintenance
• Megadyne/Jason manufacturing lineage with industrial-grade quality standards for power transmission belts

Compatibility

Designed as an OEM-style replacement B-section V-belt for belt-drive HVAC blowers, fans, compressors, and general industrial drive systems requiring a standard B57 cross-section belt.

Installation Notes

Belt installation and replacement should be performed by a qualified technician. De-energize and lock out the equipment before removing the belt guard or accessing the drive. Loosen the motor or tensioner mounting to relieve belt tension before removing the old belt — never pry or roll a V-belt over a sheave under load, as this can damage the belt cords and the sheave groove. After seating the new belt, adjust tension according to the equipment manufacturer's specification and verify sheave alignment before returning the unit to service.

Technical Specifications

• Belt Section: B
• Width: 5/8 inch
• Outside Circumference: 60 inches
• Material: Rubber
• Color: Black
• Package Quantity: 20 belts per package
• Weight: 21 pounds

Standard Information

• Brand: JASON INDUSTRIAL
• Manufacturer Part Number: B57