Power transmission belt , Iran

Power transmission belts are typically made from a combination of durable elastomers such as neoprene, polyurethane, and EPDM, reinforced with Kevlar or fiberglass fibers. These belts can withstand operating temperatures ranging from -30 to +120 degrees Celsius, with tensile strength usually between 10 and 40 megapascals. Belt thickness ranges from 5 to 15 millimeters, while width varies between 10 and 100 millimeters depending on the application. Initial tension in V-belts is typically set at 3 to 10 percent of the belt length to reduce slippage. Power transmission efficiency in these systems ranges from 90 to 98 percent, and the belts can transmit power up to 50 kilowatts.

The service life of power transmission belts generally ranges from 10,000 to 20,000 hours and can be extended with proper maintenance. Maximum allowable belt speed can reach up to 60 meters per second, which is critical for high-speed applications. Belt surfaces are coated with wear- and oil-resistant layers to reduce abrasion. Key design factors include pulley groove angle, friction coefficient, and belt bending radius, all of which ensure optimal performance and prevent slippage.
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