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3L Series Classical V Belt

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Classical 3L Series V-Belts – Reliable Power for Light-Duty Drives

When your application calls for smooth, efficient power transmission in tight spaces, Classical 3L Series V-Belts deliver consistent performance and long-lasting reliability. Designed specifically for fractional horsepower (FHP) motors, these light-duty belts are ideal for compact mechanical systems where space is limited but dependable operation is essential.

3L series V-belts feature a top width of 3/8 inch (0.38") and a height of 7/32 inch (0.22"), making them perfectly suited for small pulleys and high-speed, low-torque applications. Manufactured from durable rubber compounds and reinforced with high-strength polyester cords, 3L belts offer excellent flexibility, reduced stretch, and quiet, vibration-free operation.

These belts are commonly used in residential, commercial, and light industrial equipment where fractional horsepower motors (typically 1 HP or less) are standard. With oil-resistant, heat-resistant, and anti-static properties, 3L V-belts are engineered to perform reliably across a wide range of conditions.

Key Specifications:

  • Belt type: 3L Classical Fractional Horsepower V-Belt

  • Top width: 3/8 inch (0.38")

  • Height: 7/32 inch (0.22")

  • Construction: Rubber with polyester tensile cords

  • Temperature range: -30°F to +140°F

  • Oil and heat resistant, antistatic

  • Pitch length typically ranges from 10" to 100"+

Common Applications:

  • HVAC fans and blowers

  • Small pumps and compressors

  • Lawn and garden equipment

  • Light-duty conveyors

  • Office and vending machines

  • Home appliances and hobby machinery

     

Definitions:

  • Pitch Length (Lp):
    The length measured at the pitch line — this is where the belt effectively rides on the pulleys (approximately at the center of the belt’s cross-section).

  • Outside Length (La or Lo):
    The length measured around the outermost surface of the belt — the longest measurable length.

3L V-Belt Pitch vs. Outside Length:

For 3L belts, the difference between the pitch length and the outside length is typically:

Pitch Length = Outside Length – 1.5 inches

This is a general rule of thumb used by many belt manufacturers.



Whether you're replacing a worn belt or designing a new light-duty drive system, the 3L Series V-Belt offers an affordable, reliable, and efficient solution. Trusted by OEMs and maintenance professionals alike, it’s the go-to choice for compact power transmission needs.