Full definition
Metric V-belt profile standardized in ISO 4184 and DIN 7753 with a top width of 12.7 mm and height of 10 mm. It is the metric equivalent of the classic A profile (RMA IP-20). Minimum recommended pulley diameter: 90 mm (raw-edge cogged) to 100 mm (wrapped). Power range: 0.7-30 kW depending on speed and pulley diameter. Maximum peripheral speed: 42 m/s. The SPA profile is widely used in Europe and Latin America for light to medium industrial drives including fans, pumps, compressors, and machine tools. Available in wrapped, raw-edge, and cogged versions from all major manufacturers. Belt lengths designated by datum length (Ld) in mm. Brands: Optibelt VB/SK, Gates Super HC, Continental CONTI-V.