B61 V-Belt (5L640) — a classical B-section V-belt engineered for reliable power transmission in larger machinery and more demanding motor systems. With a 5/8" top width, 61" inside length, and 64" outside length, this heavy-duty belt is ideal for industrial equipment, agricultural machinery, HVAC systems, and larger compressors.
Note: Inside length is about 3" shorter than outside length
Key Features:
Belt Type: Classical B Section (5L640 / B61)
Dimensions: 5/8" top width x 13/32" height x 64" outside length
Inside Length: 61" (approximately 3" shorter than outside length)
Outside Diameter: 64"
Angle: Standard 40° V-angle for secure grip and consistent performance
Construction:
Core: Features helically wound tensile cords made of high-strength, heat- and chemical-set polyester. The cords are engineered for superior tensile retention and long-term durability, tested to meet world-class performance standards.
Wrap: The outer wrap is a durable synthetic rubber fabric that resists oil, heat, and abrasion. Designed for extended service life under tough operating conditions.
Body: Composed of a high-performance synthetic rubber compound, formulated for flexibility, cool operation, and resistance to cracking. Strong adhesion to both cords and outer fabric ensures optimal belt integrity.
Temp Range: -30°F to 140°F (-34°C to 60°C) — suitable for both indoor and outdoor use
Common Applications:
Larger lawn & garden equipment (riding mowers, garden tractors)
Belt-driven air compressors and shop tools
Agricultural equipment (combines, balers, conveyors)
HVAC systems, industrial fans, and blower motors
This B61 / 5L640 V-belt delivers high-performance operation with reduced noise and minimal maintenance. Ideal for heavy-duty applications where strength, reliability, and endurance are key, it's a trusted choice for OEM replacements in both commercial and agricultural settings.
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-Ships From USA-