Product Description:

The 2VM62-020-8 is a low-inertia permanent-magnet DC servomotor produced by Pacific Scientific within the Low Inertia PMDC Servomotors series. This frame-size 62 unit combines rare-earth magnets with a laminated steel core to reduce rotating mass while maintaining usable magnetic flux. It is suited for positioning axes, labelers, and compact motion stages, where low-voltage input power is converted into controlled rotary torque and rapid bidirectional response. Its permanent-magnet construction also helps deliver repeatable torque in applications that require frequent starts, stops, and reversals over short move distances.

Within this frame, the motor draws a continuous line current of 4.4 A RMS from a supply of 24 V. The armature has a terminal resistance of 1.59 Ω, and that value helps estimate current draw and copper losses during sustained duty. Torque is generated in direct proportion to current by a constant of 5.3 oz-in/A, so the drive can relate commanded current to output torque with a simple linear relationship. The rotor inertia is only 0.00052 oz-in-s², which helps the motor accelerate quickly, reverse direction with limited delay, and follow short indexing moves with reduced lag. This combination of electrical and inertial characteristics suits light-duty servo systems that prioritize fast response over heavy-load capacity.

The output shaft projects 0.625 in beyond the mounting face. It terminates in a gear land of 0.500 in diameter, allowing direct connection to lightweight spur gears or timing pulleys while keeping added rotating mass low. A built-in tacho generator provides 3.0 V per 1000 rpm for speed feedback to the drive. That analog feedback signal helps the control loop maintain stable velocity during rapid direction changes, short settling intervals, and low-to-medium speed operation. The tacho output can be used by the controller for closed-loop velocity regulation and monitoring.