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Belt sizes, including the 5PK designation, are crucial for ensuring compatibility with pulleys and proper function in your machinery. The size of a V-belt is usually denoted in terms of width and length. For instance, a 5PK belt has a width of 17mm (millimeters) and a specific length measurement that varies according to the application. The length of the belt is usually measured in millimeters as well, and it is represented by a number that indicates the belt's circumference.


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Ribbed belts are primarily responsible for transmitting power from the engine crankshaft to various accessories such as the alternator, water pump, power steering pump, and air conditioning compressor. Unlike traditional V-belts, ribbed belts feature multiple grooves along their inner surface, allowing them to grip the pulleys more effectively. This design not only improves efficiency but also allows a single ribbed belt to replace multiple belts in a vehicle, simplifying the engine design and reducing weight.


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