Full definition
The SPB profile is a metric V-belt design that adheres to the specifications of ISO 4184 and DIN 7753. This profile features a top width of 16.3 mm and a height of 13 mm, making it one of the most prevalent V-belt profiles utilized in various industries globally. The SPB profile is particularly noted for its ability to transmit power efficiently across a variety of applications, which is why it has become a standard choice in the medium-duty category. Its approximate imperial equivalent is the B profile, which is commonly recognized in the North American market.
SPB belts are engineered to operate effectively with a minimum pulley diameter ranging from 140 mm for raw-edge constructions to 160 mm for wrapped designs. This dimensional specification is crucial for ensuring proper belt performance and longevity. The belts can handle a power range of 2 to 75 kW, contingent upon the speed of operation and the size of the pulleys used. Furthermore, the maximum peripheral speed for the SPB profile is capped at 42 m/s, which is an essential parameter for applications where belt speed directly affects operational efficiency.
The SPB profile is predominantly employed in various industrial scenarios, including pumps, fans, compressors, and crushers. Its flexible construction options—standard wrapped, raw-edge, and cogged (notched)—enhance its adaptability for different operational requirements. The datum length (Ld) of the SPB belts is designated in millimeters, with stock lengths typically ranging from 1250 mm to 8000 mm, allowing for customization according to specific installation needs. Renowned brands manufacturing SPB profiles include Optibelt, Gates, Continental, and Mitsuboshi, among others, providing a range of choices for end-users in the B2B market.