Full definition
Heavy-duty metric V-belt profile per ISO 4184 and DIN 7753 with 22 mm top width and 18 mm height, designed for high-power industrial transmissions. Approximate imperial equivalent: C profile. Minimum pulley diameter: 224 mm (raw-edge) to 250 mm (wrapped). Power range: 7.5-250+ kW per belt depending on speed and configuration; multiple belts common. Maximum peripheral speed: 42 m/s. Used in crushers, large fans, heavy compressors, mining conveyors, cement plants, and sugar mills. Available in wrapped, raw-edge, and cogged versions. Datum length (Ld) range: 2000-12500 mm typically. The SPC profile handles roughly 3x the power of SPA at equivalent speed. Brands: Optibelt, Gates, Continental, Mitsuboshi, Bando.