J Series Serpentine Belts – Compact, High-Efficiency Power Transmission Solutions
J Series serpentine belts—also referred to as J-section Poly-V belts or micro-V belts—are engineered for compact, high-speed drive systems requiring smooth, efficient, and reliable power transmission. Their multi-ribbed design combines the flexibility of flat belts with the traction of V-belts, allowing for higher power density in smaller spaces. This makes J Series belts a preferred choice across industrial, commercial, and automotive applications.
Specifications of J Series Serpentine Belts
Designed to meet ISO 9982 and RMA standards, J Series belts deliver consistent performance and broad compatibility.
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Rib Pitch: 2.34 mm (0.092")
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Approx. Height: 3.5 mm
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Width: Determined by rib count
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4 ribs = 9.36 mm
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6 ribs = 14.04 mm
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10 ribs = 23.40 mm
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Effective Lengths: 250 mm to 3000+ mm
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Material Options: EPDM or neoprene rubber
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Tensile Cords: Polyester or aramid
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Minimum Pulley Diameter: 18 mm
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Features: Anti-static, low vibration, heat- and oil-resistant, excellent abrasion resistance
Each belt is marked by rib count and length (e.g., PJ660-6 = 6 ribs, 660 mm effective length).
Applications of J Series Serpentine Belts
Industrial & Commercial Equipment
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HVAC blowers and fan drives
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Treadmills and fitness machines
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Packaging, conveyor, and material handling systems
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Printing presses and textile machinery
Automotive & Outdoor Power Equipment
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A/C compressors and auxiliary drive systems
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Power steering units
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Lawn tractors, compact mowers, and small engines
Consumer & Office Appliances
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Washing machines and dryers
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Vending machines
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Office printers, copiers, and scanners
High-Performance Power in a Compact Design
J Series serpentine belts offer exceptional flexibility, minimal noise, and high efficiency, making them ideal for modern compact drive systems. Their precision construction ensures long service life and reliable operation even at high speeds. Contact us for sizing assistance, OEM cross-references, and fast delivery.