Product Description:

The PMA44P-00100-00 is a brushless servomotor from Pacific Scientific in the PMA Brushless Motors series. As a permanent-magnet, three-phase unit, it is intended for closed-loop positioning and velocity control in automated machinery where smooth, repeatable motion is required. This type of motor is well suited for servo axes that need accurate starts, stops, and speed changes during normal production. The motor is supplied without a brake, so load holding during power loss must come from the drive or an external device. A resolver mounted on the shaft provides feedback, and the smooth shaft supports coupling to gearboxes, pulleys, or direct-drive loads in packaging lines, pick-and-place stations, and indexing tables.

The motor delivers a continuous stall torque of 8.2 Nm, allowing sustained holding force at standstill without overheating under rated conditions, and it can reach a peak torque of 29.4 Nm during short acceleration periods. The housing uses a 115 mm square body, which provides surface area for heat dissipation while keeping the frame easy to fit into common machine layouts. Rotor inertia is 0.68 × 10⁻³ kg·m², so the motor can respond quickly when the driven load is properly matched. The nominal stall current is 5.4 ARMS, and the windings are rated for 240–480 V AC operation with compatible servo amplifiers. These electrical values should be matched carefully so the motor can deliver its rated output during continuous and intermittent duty.

The motor has a mass of 9.0 kg, which adds to the moving load on gantry axes or articulated joints when the unit is mounted on a moving machine member. Electrical terminations use a right-angle orientation, which helps route cables where rear clearance is limited and reduces the bend needed immediately after the connector. Power is carried through a keyed 6PP connector that keeps the power connection separate from the resolver leads and helps maintain clean signal routing. The four-stack lamination length increases active copper volume to support the published torque capability during repeated servo motion.