IEC 60072-1 Ed. 6.0 b:1991, Dimensions and output series for rotating electrical machines - Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080

Covers most industrial rotating electrical machines within the dimension range: Foot-mounted: shaft heights 56 mm to 400 mm. Flange-mounted: pitch circle diameter of flange 55 mm to 1080 mm. Gives fixing dimensions, shaft extension dimensions and output powers. Maximum permissible torques for continuous duty on a.c. motors are also listed for various shaft diameters.