Product Description:

The PMA53R-00100-00 belongs to the PMA Brushless Motors series manufactured by Pacific Scientific. It is a brushless servo motor intended for closed-loop positioning and velocity tasks in automated machinery, where precise electromechanical conversion is required to drive loads smoothly and repeatably. Its brushless design reduces wear associated with mechanical commutation and supports consistent response during repetitive motion cycles. Position feedback comes from a resolver, allowing the drive to monitor rotor angle continuously during motion.

The motor can sustain a continuous stall torque of 10.5 Nm, so it can hold static loads during standstill operation without thermal overload. When rapid acceleration is required, its peak torque reaches 31.0 Nm, supplying three times the continuous level for short duty cycles. Current draw at rated stall is 11.0 A RMS, which is used when sizing the matched drive amplifier and cabling. The three-phase winding operates on 240-480 V AC, allowing the same frame to work on mid- or high-line supplies common in factory power systems. Dynamic response is influenced by a rotor inertia of 1.92 kg·m² × 10⁻³; this moderate inertia balances quick speed changes with stable servo behavior under load disturbances.

A square body dimension of 142 mm sets the flange size for mounting to gearboxes or machine plates, and the assembly mass is 11.0 kg, which is considered during gantry or axis load calculations. Power and feedback exit through a right-angle connector layout, saving axial space in shallow enclosures and helping with compact cable routing. The supply conductors terminate on a 6PP (6-pin power) plug that pairs with standard Pacific Scientific cable sets. A smooth shaft simplifies direct coupling to collars or integral couplings, and the absence of an integral brake means holding torque must be provided externally when power is removed. The stack length code of 3 indicates the internal lamination height used for this torque class.