The Model MMP-TM55-12V GP52-308 gearmotor from Midwest Motion accepts any 12-volt DC source including battery power and measures 2.14" in diameter by 7.75" long and has a keyed output shaft of 12 mm diameter by 25 mm long. According to the company’s press release, easier mounting is possible with four face mount M5 threaded holes, equally spaced on a 40 mm diameter bolt circle. The gearmotor’s output is rated for 35 Nm continuous torque at 15 rpm and 70 N-m peak. The motor’s design requires7.2 ampere at 12 volts DC to generate its full load output torque. Optional 24 and 36-volt windings are available. The design is rated at IP-54 protection level for operation in harsh environments. Typical options available include servo motors with integral optical encoders, failsafe brakes, analog tachometers and planetary gearheads with ratios from 3:1 to 450:1 and standard or low backlash precision gearing.