Product Description:

The 2VM61-000-2 servomotor is produced by Pacific Scientific as part of its Low Inertia PMDC Servomotors series. Designed for closed-loop motion axes, the unit delivers rapid acceleration because of its low-mass rotor. It is intended to position light mechanical loads in assembly cells, pick-and-place heads, or indexing fixtures within industrial automation lines.

The motor is classified as a Low Inertia PMDC Servomotor, meaning the permanent-magnet DC topology combines reduced rotor inertia with quick current-to-torque response. Magnetic flux is established with Alnico V material, a cast alloy that maintains field strength at elevated temperatures, so the motor retains a high demagnetization margin. The shaft end diameter is 0.344 to 0.406 in., allowing direct coupling to small timing pulleys or flexible couplings without additional sleeves. Thermal management relies on the lack of forced-air provisions, so continuous load must be limited to keep winding temperature within rating when the motor is installed in a still-air cabinet. For speed feedback, the motor has no attached tachometer, so an external sensor or drive-based estimator must generate velocity signals.

Torque production stems from the basket-wound hollow rotor, a geometry that lowers rotational inertia and lets the magnetic field fully penetrate the armature conductors. The armature bundle follows a medium torque-constant winding design, balancing current demand and voltage requirements for typical 24 to 90 VDC drives. Because there is no optical encoder, position control must rely on an external resolver or Hall sensor kit when precise angle reporting is required. This arrangement leaves sensor selection open while preserving the quick start-and-stop response expected in high-cycle automation where intermittent motion is more important than continuous-duty heat dissipation.