The SM2861-5221 is a bipolar, two-phase, brushless, AC stepper motor manufactured by Sanyo Denki. It features a rated 100 VAC, step angle of 1.8° and rated torque of 3.3Nm (40 oz-in). The motor is able to handle a high load current of 6 amps. It is a precision motor that provides high torque and low noise operation. The SM2861-5221 is widely used in precision automation applications, such as labeling, packaging, medical diagnosis, and measuring equipment.