The Model No. MMP-D33-455B-12V GP81-308 dc gearmotor accepts any 12-Vdc source, including battery power. The unit measures 3.2 × 10 in. and has a 19 × 40-mm keyed output shaft. Four “face-mount” M6 threaded holes, equally spaced on a 65-mm-diameter B.C., makes mounting easy This reversible gearmotor is rated for 1,350 lb-in. continuous torque at 10 rpm, and 2,124 Ib-in. peak. The motor requires just 21 A at 12 Vdc to generate its full load torque. Motor windings for 24, 36, 48, 60, and 90 V are available. This design is rated at IP54 protection level for operation in harsh environments. To make the gearmotor variable speed, optional Model MMP25A-12V or MMP 20A-12V-RSP speed controls are available.Midwest Motion Products, 10761 Ahern Ave. SE, Watertown, MN 55388, (952) 955-2626, www.midwestmotion.com