Product Description:

The PMA44R-00100-00 brushless servomotor is built by Pacific Scientific within the PMA Brushless Motors series. It serves as a rotary actuator for industrial axes that need repeatable speed, position, and acceleration without frequent maintenance. By converting drive amplifier currents into controlled mechanical torque, the unit supports pick-and-place modules, indexing tables, and light machining centers. Its resolver feedback integrates with digital servo drives for closed-loop operation during positioning, indexing, and speed-controlled motion in automated equipment.

At standstill, the motor can sustain a continuous torque of 8.2 Nm, and its short-term limit reaches 29.4 Nm for rapid starts or stops. This performance requires a winding stall current of 11.0 ARMS, so the matching amplifier must be sized accordingly for heavy-duty operation over repeated motion cycles. The three-phase windings are intended for use with drives in the 240–480 V AC class rather than direct connection to plant mains. Dynamic response is influenced by a rotor inertia of 0.68 × 10⁻³ kg·m², which supports quick acceleration while keeping the servo loop manageable. The motor is supplied without a brake and uses a six-pin power connector with compact cable routing.

The square frame dimension is 115 mm, so the unit fits common IEC mounting patterns, and its total mass is 9.0 kg, which helps limit added load on moving structures. Cable routing is simplified by the right-angle connector orientation, which keeps the harness parallel to the housing and reduces rear clearance requirements. Rotor position is monitored by a resolver, which tolerates vibration well and supplies the feedback needed for stable closed-loop control. A smooth shaft eases coupling to precision gearheads, and the four-stack lamination length helps concentrate magnetic flux for higher torque density across the active motor length in a compact frame.