Jason Industrial B78 V-belt 5/8 X 81 Inch Rubber

Product Description

The JASON INDUSTRIAL B78 is a black rubber V-belt designed for industrial power transmission applications. Measuring 5/8 inch wide by 81 inches in length, this belt delivers reliable torque transfer in demanding drive systems. The classic V-profile seats firmly in standard sheave grooves, reducing slippage and maintaining consistent belt tension under load. Built from rubber construction, it resists wear and flexing fatigue across a range of operating conditions. This belt is installed by maintenance technicians, millwrights, and industrial mechanics servicing belt-driven equipment in manufacturing, agricultural, and HVAC applications.

The B78 fits standard B-section belt drive configurations found in industrial and commercial equipment. Typical applications include blower assemblies, compressors, pumps, fans, and general-purpose machinery that use classical V-belt drive systems. Its 81-inch outer circumference makes it suited for longer center-distance drive arrangements where shorter belts would not reach. This belt is sold individually as a replacement unit and is also available in package quantities for stocking maintenance operations.

Key Features

• Classical B-section V-belt profile seats into standard B-groove sheaves without modification
• 5/8 inch width by 81 inch length for longer center-distance drive systems
• Black rubber construction provides wear resistance and flexibility under repeated flexing
• Designed for industrial-duty power transmission across a broad range of driven equipment
• Available in package quantity of 20 units for MRO stocking and fleet maintenance programs

Compatibility

Designed as an OEM-style replacement B-section V-belt for industrial and commercial belt drive systems using standard B-groove sheaves and pulleys.

Installation Notes

Installation is performed by qualified maintenance technicians or millwrights. Disengage and lock out all power to the drive system before removing the old belt or installing the new one, following LOTO procedures per OSHA 29 CFR 1910.147. Do not use tools to force the belt onto sheave grooves; adjust center distance to allow slack for proper seating. After installation, verify belt tension and alignment per equipment manufacturer specifications before returning the drive to service.

Technical Specifications

• Belt Section: B-section (Classical V-Belt)
• Width: 5/8 inch
• Length: 81 inches
• Material: Rubber
• Color: Black
• Package Quantity: 20 EA
• Weight: 32 pounds

Standard Information

• Brand: JASON INDUSTRIAL
• Manufacturer Part Number: B78