P50B0850DXS31 Sanyo Denki
Wake Industrial LLC is not an authorized distributor of this product.
The Sanyo Denki P50B0850DXS31 is a brushless servo motor from the P5 Super BL Servo Motors series, offering a rated output of 500 Watts and a rated speed of 3,000 min-1. It provides a continuous stall torque of 1.96 N·m, a protection rating of IP55, and comes with an 80 or 86 mm flange size. The motor features an encoder resolution of 2,000 pulses per revolution and weighs 3.0 kilograms.
Internal Product Review
The P50B0850DXS31 is a Sanyo Denki P5 Super BL servo motor with brushless motor technology and a 500 W rated output. Rated torque of 1.589 N·m and max speed of 4,500 min-1 give the motor a very capable balance of precision and dynamic response. IP55 protection adds strong value for dependable servo performance in demanding industrial service.
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Product Description:
The P50B0850DXS31 is a brushless AC servo motor produced by Sanyo Denki for the P5 Super BL Servo Motors series. This low-to-medium-power rotary actuator converts drive current into precise shaft motion for indexing tables, pick-and-place heads, and similar industrial automation axes. Its closed-loop design supports repeatable torque delivery and regulated speed during positioning cycles. The brushless configuration also avoids the wear associated with mechanical commutation while providing responsive operation under changing loads.
During continuous operation, the motor produces 500 W at a rated speed of 3,000 rpm, resulting in a nominal shaft torque of 1.589 N·m. The drive must supply 3.9 A rms to sustain this operating point. For rapid traverses, the rotor can accelerate to a maximum speed of 4,500 rpm, while a peak stall torque of 5.88 N·m supports short-term load surges. The continuous stall torque is 1.96 N·m, allowing the motor to hold a stationary load within its thermal limits. The electrical time constant is 5.2 ms, and the mechanical time constant is 1.5 ms, supporting responsive current and speed control. A phase resistance of 0.94 Ω provides an additional electrical parameter for matching the motor to a suitable servo drive. Position feedback comes from a 2,000-pulse-per-revolution incremental encoder, which supplies the controller with the signals needed to regulate shaft position and velocity.
The torque-to-current ratio is 0.473 N·m/A rms, providing predictable torque as the controller adjusts motor current. The enclosure carries an IP55 protection rating, providing resistance to dust and water jets when the cable entry is properly sealed. With a mass of 3.0 kg, the motor places a moderate structural load on a moving carriage or machine frame. The square flange measures 80 mm or 86 mm across, depending on the mounting reference, and the output shaft has a diameter of 16 mm. These dimensions support installation with compact couplings and appropriately sized gearheads. The housing can operate at temperatures up to 80 °C, subject to the required mounting and cooling conditions. Its fast response characteristics allow the paired controller to maintain stable motion without relying on the unsupported 1,000 Hz bandwidth claim from the original description.
