Jason Industrial B31 Rubber V-belt 5/8 X 34 Inches

Product Description

The JASON INDUSTRIAL B31 is a black rubber V-belt designed for industrial drive applications. Measuring 5/8 inches wide and 34 inches in length, this B-section belt transmits rotational power between pulleys in mechanical drive systems found across HVAC equipment, industrial machinery, pumps, and fans. It is installed by HVAC technicians, millwrights, and mechanical contractors as part of routine belt replacement or drive system maintenance. The rubber construction provides flexibility and durability under continuous load, and the standard B-section profile ensures compatibility with widely used sheave and pulley configurations.

This belt is suited for residential and light commercial HVAC blower assemblies, agricultural equipment, industrial fans, compressors, and general-purpose power transmission drives. The B31 designation follows standard belt sizing conventions, making it a direct replacement in any application calling for a B-section belt with a 34-inch outside circumference. Technicians typically keep a stock of common B-section sizes on the truck for field replacement during seasonal HVAC startups and equipment servicing calls.

Key Features

• B-section profile: 5/8 inches wide, compatible with standard B-section sheaves and pulleys
• 34-inch length fits common blower and drive configurations
• Black rubber construction resists heat, flex fatigue, and oil exposure under normal operating conditions
• Standard V-belt geometry provides reliable grip and power transmission without slippage
• Sold individually; package quantity of 30 available for stocking distributors

Compatibility

Designed as a standard B-section replacement V-belt for residential and commercial HVAC blower drives, industrial fan assemblies, pump drives, and general-purpose power transmission equipment requiring a B31 belt size.

Installation Notes

V-belt replacement is performed by HVAC technicians, maintenance mechanics, and millwrights. Always disconnect and lock out electrical power to the equipment before removing the belt guard or accessing the drive assembly. Adjust sheave spacing to relieve tension before removing the old belt, and do not pry or force a new belt over the sheave flanges. After installation, set belt tension according to the equipment manufacturer's specification and verify alignment before returning the unit to service.

Technical Specifications

• Belt Section: B
• Width: 5/8 inches
• Length: 34 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: B31