Jason Industrial 3L400 V-belt

Product Description

The JASON INDUSTRIAL 3L400 is a fractional-horsepower V-belt designed for light-duty power transmission in residential and light commercial equipment. V-belts in the 3L series feature a 3/8-inch top width and are built to transfer rotational power between sheaves with consistent tension and minimal slippage. The 3L400 designation indicates a 40.0-inch outside circumference, placing it in a common size range used across a wide variety of motor-driven equipment. It is installed and serviced by HVAC technicians, equipment mechanics, and experienced maintenance personnel.

The 3L series fractional-horsepower V-belt is found in residential HVAC systems, pool and spa equipment, small compressors, fans, blowers, and general light-duty machinery. The 3L400 is a direct replacement belt suited for any application calling out a 3L400 cross-reference. Installers should verify sheave groove profile and belt tension specifications for the specific equipment before installation.

Key Features

• 3L series profile with 3/8-inch top width for fractional-horsepower drives
• 40.0-inch outside circumference for precise fitment across common sheave configurations
• Engineered for consistent tension retention under cyclic load conditions
• Suitable for HVAC blowers, pool equipment, small compressors, and fan drives

Compatibility

Designed as an OEM-style replacement for any application specifying a 3L400 fractional-horsepower V-belt in the 3L series cross-section.

Installation Notes

Always de-energize and lock out the equipment before removing or installing a V-belt. Loosen the drive motor mounting fasteners to relieve belt tension before removal — never roll or force a belt over a sheave under tension. After seating the new belt, adjust motor position to achieve proper tension per the equipment manufacturer's specification, then verify alignment of sheave grooves before restoring power.

Technical Specifications

• Belt Series: 3L (Fractional Horsepower)
• Top Width: 3/8 inches
• Outside Circumference: 40.0 inches
• UPC: 74604100030

Standard Information

• Brand: JASON INDUSTRIAL
• Manufacturer Part Number: 3L400