The single head is an electric stepper motor manufactured by Unipower. This motors have a linear and a geared version that has 2,3,4,5 phase
and available in up to six stack lengths with several windings. It has four, six or eight lead wires or conduit boxes. It is a square-bodied, and high-torque stepper motors but it also has a round version with a standard stepper motor. This stepper motor has a nema of 08, 11, 14, 15, 17, 23, 24, 34, and 42 that can be linear, geared, encoder, brake and is compliant to the RoHs. Its torque is 2.5 to 5,700 ounce-inches
and has an step angle of 1.8 and 0.9,3.6 degrees. This motor is customizable upon request.