Classical B Series V-Belts – Heavy-Duty Power Transmission for Industrial Applications
Engineered for High-Torque, High-Demand Drive Systems
Classical B Series V-belts are built for rugged, heavy-duty power transmission where reliability and torque performance are critical. Designed to handle higher horsepower loads and larger pulley diameters, B-series belts are essential components in industrial machinery that operates under continuous or high-stress conditions. Their trapezoidal profile ensures maximum surface contact with pulley grooves, delivering superior grip, reduced slippage, and efficient power transfer.
Manufactured from premium rubber compounds and reinforced with high-strength polyester or aramid cords, these belts provide exceptional resistance to heat, oil, static, and abrasion. Their durable construction enables dependable operation in harsh environments such as manufacturing plants, farms, and construction sites.
Specifications
Built for Industrial Strength and Long Service Life
B Series V-Belt Specifications:
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Top Width: 21/32" (0.656")
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Height: 13/32" (0.406")
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Pitch Length Formula: Outside Length – 3.0"
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Typical Length Range: 25" to 200"+
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Standards: Meets or exceeds RMA/ARPM industrial V-belt specifications
These belts maintain excellent dimensional stability and consistent performance, even under heavy loads and extended run times.
Applications
Designed for High-Horsepower Industrial Machinery
Classical B-series V-belts are trusted across a wide range of industries:
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Agricultural equipment: tractors, balers, threshers
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Manufacturing conveyors & processing lines
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Industrial HVAC systems & large air compressors
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Heavy-duty pumps, grinders, and mixers
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Construction and mining machinery
Their ability to withstand shock loads and continuous operation makes them a dependable choice for mission-critical equipment.
B Series vs. 5L Series
Understanding the Difference
While B-series and 5L-series belts share the same top width of 21/32", they differ significantly in design and performance:
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B Series:
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Industrial-grade construction
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Higher horsepower capacity
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Suitable for heavy-duty applications
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5L Series:
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Fractional horsepower (FHP) belt
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Designed for light-duty commercial or residential equipment
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Pitch Length Comparison:
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B Series: Pitch ≈ Outside Length – 3.0"
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5L Series: Pitch ≈ Outside Length – 1.5"
This distinction is crucial for accurate replacement and cross-referencing.
For dependable heavy-duty power transmission, Classical B Series V-belts deliver unmatched durability, strength, and efficiency. Contact us for OEM replacements, cross-referencing, and fast availability.