Compact, Efficient, and Built for Fractional Horsepower Applications
Classical 3L Series V-Belts are engineered to deliver smooth, dependable power transmission in compact drive systems where fractional horsepower motors are used. Ideal for applications requiring flexibility, quiet operation, and reliable performance, 3L belts are a staple in residential, commercial, and light-industrial machinery.
Specifications and Performance
Designed for Tight Spaces and High-Speed Operation
With a top width of 3/8" (0.38") and a height of 7/32" (0.22"), 3L belts are optimized for small-diameter pulleys and light-duty drives. Their slim profile allows them to operate efficiently at high speeds while maintaining stable power transfer with minimal vibration.
Manufactured from durable rubber compounds and reinforced with high-strength polyester tensile cords, these belts resist stretching and provide long service life. Engineered to withstand heat, oil, and static buildup, 3L belts offer consistent performance across a wide temperature range and demanding environments.
Key Specifications
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Type: Classical 3L Fractional Horsepower V-Belt
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Top Width: 3/8" (0.38")
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Height: 7/32" (0.22")
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Temperature Range: -30°F to +140°F
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Construction: Rubber body with polyester cords
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Pitch Length Range: Commonly 10" to 100"+
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Resistant to: Oil, heat, static electricity
Applications
Ideal for Light-Duty, Compact Drive Systems
3L V-belts are commonly found in:
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HVAC blowers and ventilation fans
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Small compressors and pumps
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Lawn and garden equipment
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Light-duty conveyors
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Vending and office machines
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Home appliances and hobby tools
Understanding 3L Belt Sizing
Pitch Length vs. Outside Length
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Pitch Length (Lp): Length at the belt’s pitch line (center of cross-section).
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Outside Length (La): Measured around the belt’s outer surface.
General rule of thumb:
Pitch Length ≈ Outside Length – 1.5"
This ensures proper fit and performance on fractional horsepower pulleys.
For compact systems requiring smooth, efficient, and economical power transmission, Classical 3L Series V-Belts remain the trusted choice of OEMs, technicians, and maintenance professionals.