Product Description:

The PMA42N-01100-00 is a brushless servo motor manufactured by Pacific Scientific for the PMA Brushless Motors series. In automated production lines, the unit converts regulated AC power into controlled rotary motion that positions slides, indexes tooling, or drives light conveyors. It is sized for mid-frame applications where a compact but capable actuator must interface with a matching servo drive and control architecture. The design keeps heat rise manageable so continuous duty cycles can be sustained in enclosed cabinets.

At stall, the motor delivers a continuous torque of 4.1 Nm, while its overload capacity allows a peak of 14.6 Nm during rapid acceleration. These figures are obtained with a winding that draws 3.8 ARMS under static load and is rated for a supply window of 240–480 V AC, enabling connection to common three-phase servo amplifiers. The electromagnetic system is coupled to a rotor with an inertia of 0.36 kgm² × 10⁻³, giving short electrical and mechanical time constants that help the controller maintain tight velocity loops. Together, these values describe the motor’s usable speed range and the drive capacity needed for repetitive pick cycles or packaging duties.

The motor has a square 115 mm housing that accepts standard flange patterns, and a smooth shaft eases coupling to belts or gearheads. A factory-installed 24 V brake secures the axis when power is removed, while feedback is provided by a resolver for rotor position information during commutation and closed-loop control. Power enters through a right-angle 6PP connector that minimizes axial space, and the two-stack lamination keeps overall length moderate while setting the total mass at 6.2 kg. This layout suits gantry heads and small index tables where compact installation, secure stopping, and moderate inertia are important.