Jason Industrial B81 Rubber V-belt 21/32 X 84 Inch

Product Description

The JASON INDUSTRIAL B81 is a black rubber V-belt designed for industrial power transmission applications. Measuring 21/32 inches wide by 84 inches in length, this B-section belt transfers rotational power between sheaves and pulleys in a wide range of industrial and commercial drive systems. It is manufactured to standard B-section geometry, allowing it to seat correctly in matched groove profiles. HVAC technicians, millwrights, and maintenance professionals install this belt as a direct replacement or new-installation drive component in fan, blower, compressor, and pump assemblies.

The B81 is suited for use in commercial and industrial equipment where a standard B-section endless V-belt is specified. Typical applications include belt-driven blower assemblies, air handling units, agricultural equipment, industrial machinery, and general-purpose drive systems that call for a 84-inch pitch length B-section belt. Its black rubber construction handles the heat, flex fatigue, and dynamic loading common in continuous-duty drive systems.

Key Features

• B-section profile fits standard B-groove sheaves and pulleys
• 84-inch length suits medium to large drive center distances
• 21/32-inch top width conforms to classical B-section geometry
• Black rubber compound resists heat and flex fatigue in continuous-duty operation
• Endless construction eliminates splice failure points

Compatibility

Designed as a direct OEM-style replacement for standard B-section V-belt drive systems requiring an 84-inch belt length in industrial, commercial HVAC, and general mechanical power transmission applications.

Installation Notes

Installation should be performed by a qualified technician following applicable equipment manufacturer guidelines. Always de-energize and lock out the drive system before removing or installing belts. Never pry a belt over sheave flanges using tools that could nick or kink the belt; instead, reduce center distance to allow slack installation. After installation, verify belt tension and alignment per the equipment manufacturer specification before returning the system to service.

Technical Specifications

• Belt Section: B-section
• Top Width: 21/32 inches
• Outside Length: 84 inches
• Color: Black
• Material: Rubber
• Package Quantity: 20 per unit of measure (EA)
• Weight: 35 pounds

Standard Information

• Brand: JASON INDUSTRIAL
• Manufacturer Part Number: B81