Product Description:

The 4VM62-200-7 is a direct-current servomotor built by Pacific Scientific within the Low Inertia PMDC Servomotors series. Designed for closed-loop motion axes, the unit converts command voltage from a drive into proportional shaft torque and speed, allowing precise positioning of light machine tables, pick-and-place heads, or indexing fixtures in industrial automation cells. Its low-inertia layout supports quick acceleration and frequent direction changes without excessive lag. This makes the motor suitable for motion systems that need responsive speed changes and accurate short-stroke movement.

At the mechanical interface, the motor rotates on sealed ball bearings, reducing lubricant loss and shielding the raceways from airborne debris. Commutation relies on carbon brushes, which transfer armature current while tolerating the rapid reversals typical of servo duty. Thermal exchange is assisted by an air inlet and outlet with baffles; these passages guide cooling air over the armature to keep winding temperature within its rated range. The magnetic field is supplied by Alnico V-7 permanent magnets, which provide stable flux density over time. A basket-wound hollow rotor lowers rotational inertia, so acceleration commands can be met with minimal drive-current overshoot.

Feedback components are intentionally absent. The motor has no analog tachometer, and the optical encoder is omitted, so velocity or position data must come from an external sensor when closed-loop verification is needed. The motor is a PMDC servomotor, which allows it to run directly from a filtered DC bus controlled by a pulse-width-modulated drive. In light transport stages or pick-and-place actuators, this configuration reduces overall mass and simplifies wiring. Maintenance guidelines specify brush replacement timing and commutation polarity for this model, which helps preserve predictable torque output without recalibration.