Industrial Grade Rotor Nut Motors  Frame Sizes

Rotor Nut Motors

Frame size selection:

Motors are typically made in groups or families, the families are identified by the outer diameter or size of the square, these references are called frame sizes. In the American system, a 23 frame is a nominal 2.3 inches in diameter. For motors less than one inch in diameter, the reference is typically known as a size. Herein is a list of the frame sizes offered by Empire Magnetics Inc. and some of the characteristics of the group that will allow you to select from them.

Frame Size 17: Nominal outer dimension of 1.7 inches, these motors are relatively low power, useful for a wide range of industrial applications. Torque range of 13 to 26 oz-in translates to force ranging from 30 to 60 pounds. Cylindrical shaped motor laminations, with square end flanges front and rear. Because this motor does not have a housing, it is not available in all environments.

Frame Size 23: Nominal outer dimension of 2.3 inches. Extremely popular size useful for a wide range of industrial applications. Torque range of 60 to 150 oz-in translates to force ranging from 75 to 210 pounds. Cylindrical shaped motor with square front flange.

Frame Size 34: Nominal outer dimension of 3.4 inches. Power range of 80- 240 watts, useful for a wide range of applications. Torque range of 150 to 450 oz-in translates to force ranging from 240 to 660 pounds.. Cylindrical shaped motor with square front flange.

Frame Size 42: Nominal outer dimension of 4.2 inches. Power range of 240-700 watts, relatively high power in the stepper motor range. Torque range of 400 to 1600 oz-in translates to force ranging from 800 pounds and up. Cylindrical shaped motor with square front flange.