Jason Industrial B39 Rubber V-belt 5/8x42 Inch

Product Description

The JASON INDUSTRIAL B39 is a rubber V-belt designed for industrial power transmission applications. Sized at 5/8 inch wide by 42 inches in length, this is a classical B-section V-belt built for reliable torque transfer in belt-driven equipment. The black rubber construction provides resistance to wear and heat under continuous operation. HVAC technicians, mechanical contractors, and industrial maintenance professionals use B-section belts like this one on fan drives, blower assemblies, compressors, and general-purpose machinery where consistent belt tension and grip are required.

The B39 fits standard B-section sheaves and pulleys found across a wide range of residential and commercial HVAC equipment, agricultural machinery, industrial conveyors, and pump drives. It is a direct classical-section replacement in any application calling for a B39 belt. Installations range from rooftop unit blower assemblies to industrial fan decks and belt-driven pump systems. Sold individually, with a package quantity of 30 units available for stocking orders.

Key Features

• Classical B-section profile for compatibility with standard B-section sheaves and pulleys
• 5/8 inch top width by 42 inch outside circumference sizing
• Black rubber construction for heat and wear resistance in continuous-duty applications
• Suitable for HVAC blower drives, compressor drives, pump drives, and general industrial machinery
• Sold as individual belt; package quantity of 30 available for bulk stocking

Compatibility

Designed as a standard B-section classical V-belt replacement for any drive system specifying a B39 belt cross-section and length.

Installation Notes

B-section V-belts are installed and replaced by HVAC technicians, millwrights, and mechanical maintenance technicians. Always de-energize and lock out the equipment before removing or installing a belt. Proper belt tension is critical — an under-tensioned belt will slip and generate heat, while an over-tensioned belt accelerates bearing wear. Inspect sheave grooves for wear or damage before installing a new belt.

Technical Specifications

• Belt Section: B (Classical)
• Top Width: 5/8 inch
• Length: 42 inches
• Material: Rubber
• Color: Black
• Weight: 14 pounds
• Package Quantity: 30 per package
• Unit of Measure: EA

Standard Information

• Brand: JASON INDUSTRIAL
• Manufacturer Part Number: B39