PMA57R-00100-00 Pacific Scientific 22 Newton Meter Smooth Shaft Brushless Motor
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific PMA57R-00100-00 is a brushless servomotor in the PMA Brushless Motors series, offering 22.0 Nm of continuous stall torque and 69.0 Nm of peak torque. This motor has a right-angle connector orientation, a smooth shaft, a 142 mm motor body, and weighs 19.0 kg. It uses a resolver sensor, a 6-pin power connector, and operates within a winding voltage class of 240-480V AC.
Internal Product Review
The PMA57R-00100-00 is a Pacific Scientific brushless servomotor rated for 22.0 Nm continuous stall torque. Resolver feedback and a right-angle connector support precise motion control and efficient cabinet routing. Peak torque of 69.0 Nm stands out for dynamic load handling.
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Product Description:
The PMA57R-00100-00 is a brushless servomotor manufactured by Pacific Scientific within the PMA Brushless Motors series. This rotary unit is intended for closed-loop industrial automation where precise torque and speed control are required to drive indexing tables, gantries, or packaging axes. The design combines a frameless permanent-magnet rotor with stator windings sized for medium-to-high power ranges, giving the motor a compact form for demanding motion systems. It is suited for applications where stable servo response and accurate positioning are required during repeated start-stop operation.
The motor delivers a continuous stall torque of 22.0 Nm, indicating the sustained mechanical load it can hold without exceeding thermal limits. For short acceleration bursts, it can reach a peak torque of 69.0 Nm, allowing fast cycle starts without oversizing the frame. A nominal stall current of 11.0 ARMS indicates the drive’s continuous current requirement, while the winding is intended for a supply range of 240-480 V AC to match common three-phase servo amplifiers. Dynamic response is supported by a rotor inertia of 4.21 kg·m² × 10⁻³, which helps balance responsive speed changes with stable motion under varying loads.
The housing forms a square that measures 142 mm across, simplifying mounting to metric or imperial plates. Overall mass is 19.0 kg, so moving-axis assemblies must account for the added load during support and motion control. The power connector exits in a right-angle orientation, which helps route cables in shallow enclosures or tight machine spaces, and the feedback device is a resolver that supplies analog sine-cosine signals to the controller. The unit ships without a brake, uses a smooth shaft for direct clamping couplings, accepts a 6-pin 6PP power plug, and carries a stack length code of 7 for its laminated core depth. These features support straightforward mechanical integration where compact cable routing and analog feedback are preferred.
