Product Description:

The Pacific Scientific PMA53Q-00100-00 is a brushless servomotor in the PMA Brushless Motors series. Designed for positioning and velocity loops in automated machinery, the motor converts drive current into torque without brushes or mechanical commutation. It is suited for direct-coupled rotary motion in medium-frame applications where responsive closed-loop control and low maintenance are required. This makes it suitable for packaging, indexing, and transfer systems that need repeatable rotary movement.

The motor provides a continuous stall torque of 10.5 Nm, allowing it to hold a load at zero speed without thermal overload during rated operation. For short acceleration periods, it can deliver up to 31.0 Nm of peak torque. These torque levels are supported by a winding that draws 7.4 ARMS at stall and operates from a supply range of 240-480 V AC. That voltage range allows the motor to run from common industrial servo drive systems. Dynamic response is improved by a low rotor inertia of 1.92 kg·m² × 10⁻³, which helps the shaft change speed with minimal lag. The motor has a smooth shaft and no holding brake, so external locking is required if the axis must remain fixed after power is removed. It also has a stack length code of 3, indicating the active iron depth used for this torque class.

The housing measures 142 mm across the square body, which helps the motor fit compact flange-mounted assemblies. Power connection is made through a right-angle housing with a 6PP six-pin connector, which keeps cable routing close to the motor side. Position feedback is supplied by resolver feedback, allowing compatible drives to read shaft angle reliably in electrically noisy environments. Resolver signals also remain effective in demanding industrial settings where stable analog feedback is preferred. The unit weighs 11.0 kg, and its geometry suits direct coupling to pulleys, rollers, or similar drive elements where a gearbox is not required.