Jason Industrial 3L310 Rubber V-belt 3/8 X 31 Inches

Product Description

The JASON INDUSTRIAL 3L310 is a fractional-horsepower V-belt designed for light-duty industrial and commercial drive applications. Built from black rubber, this belt measures 3/8 inches wide and 31 inches in outside circumference, conforming to the standard 3L cross-section profile. It is used to transfer power between sheaves and pulleys in equipment where precise belt sizing and reliable grip are critical. HVAC technicians, equipment repair professionals, and maintenance trades install this type of belt on fans, blowers, and small motor-driven machinery.

The 3L310 fits applications that call for a fractional-horsepower 3L-series belt in residential and light commercial HVAC systems, shop equipment, and general-purpose industrial machinery. The 3L cross-section is a standardized size recognized across OEM and aftermarket sheave systems, making it a straightforward drop-in replacement in most single-belt drive configurations. Always confirm the driven equipment's sheave groove profile matches the 3L cross-section before installation.

Key Features

• Standard 3L cross-section: 3/8 inches wide, compatible with matching 3L-profile sheaves
• 31-inch outside circumference for accurate belt-length fitment
• Black rubber construction resists heat, flex fatigue, and oil mist common in mechanical drive environments
• Sold in a package quantity of 50, suitable for stocking or fleet maintenance programs
• Conforms to fractional-horsepower V-belt industry standards for cross-section geometry

Compatibility

Designed as a standard 3L-series fractional-horsepower V-belt replacement for industrial and HVAC drive systems requiring a 3/8-inch cross-section belt with a 31-inch outside circumference.

Installation Notes

Installation should be performed by a qualified technician familiar with mechanical drive systems. Power down and lock out the equipment at the disconnect before removing the old belt or accessing the sheave assembly. Never pry or roll a V-belt onto a sheave under tension; always release drive tension using the motor mount adjustment before seating the belt, then re-tension per the equipment manufacturer's specification. Inspect sheave grooves for wear or misalignment before installing a new belt.

Technical Specifications

• Belt Cross-Section: 3L (3/8 inches wide)
• Outside Circumference: 31 inches
• Material: Rubber
• Color: Black
• Package Quantity: 50 per package
• Unit of Measure: EA
• Weight: 11 pounds (per package)

Standard Information

• Brand: JASON INDUSTRIAL
• Manufacturer Part Number: 3L310