PMA230-1050B-02 Pacific Scientific 2.0 Newton Meter Keyed 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 PMA230-1050B-02 is a brushless servomotor in the PMA Brushless Motors series with a continuous stall torque of 2.0 Nm and a peak torque of 7.2 Nm. This motor features a closed keyway shaft, no brake, and a motor body size of 70 mm square. It has a rotor inertia of 0.055 kgm^2 x 10^-3 and weighs 2.9 kg.
Internal Product Review
The PMA230-1050B-02 is a Pacific Scientific PMA brushless servomotor rated for 2.0 Nm continuous stall torque and 7.2 Nm peak torque. A closed-keyway shaft with fitted key supports dependable mechanical coupling, while low rotor inertia promotes sharp servo response. At 2.9 kg, the motor presents a very practical balance of installation ease and capable motion performance.
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Product Description:
The PMA230-1050B-02 is a brushless servomotor produced by Pacific Scientific as part of the PMA Brushless Motors series. Within multi-axis positioning stages and pick-and-place heads, it converts drive current into precise rotary motion so controllers can regulate speed, direction, and angular position with tight feedback. Its brushless construction supports responsive motion control and avoids brush wear during repetitive cycles. That makes it suitable for indexing tasks that require quick starts, reversals, and repeatable stopping points.
This model delivers a continuous stall torque of 2.0 Nm, giving the drive train steady holding torque whenever the shaft is energized but not rotating. During rapid acceleration, it can reach a peak torque of 7.2 Nm, which helps the axis overcome static friction and short-term inertial loads. The square motor body measures 70 mm on each side, keeping the package compact for tightly spaced machine layouts. Rotor inertia of 0.055 kg·m² × 10⁻³ supports predictable speed changes and helps the servo loop respond cleanly. Stack length code 3 identifies the laminated core depth used for this version of the motor.
The housing weighs 2.9 kg, which keeps the motor manageable for moving assemblies while still giving the frame enough mass for stable mounting on fixed axes. Output power is transmitted through a closed keyway shaft with the key already fitted, providing positive torque transfer to pulleys or couplings. Because the shaft includes a fitted key, mating components can be installed without machining a separate drive feature. The design is supplied without an electromechanical brake, so any load that must remain fixed after power removal requires external holding. That approach is common on axes where braking is handled elsewhere in the machine.
