The Lab-Volt Stepper Motor, Model 8244, is an optional Lab-Volt Electromechanical System (EMS) model designed for the study of stepper motor control. This machine uses industrial-grade components and is mounted in standard-size EMS module. It consists of an 8-lead stepper motor which can be connected either in series or in parallel, depending on the user configuration. It also has high torque capability.

The module is constructed of heavy gauge steel and is equipped with a clear plastic faceplate fitted with a chrome piano hinge. The faceplate can be lowered for access to the machinery and, when closed, is secured by two quick-lock fasteners. All motor leads are terminated on the faceplate by 4-mm safety jacks and are identified by schematic symbols. A geared pulley has been fitted to mechanically couple the motor with another EMS machine through the use of a non-slip timing belt (Model 8942). This flexible belt has molded teeth which mesh with the geared pulley. Tension for the timing belt is provided by the idler tensioning ball bearings mounted on the machine.