Product Description:

The P50B08050DBS31 servo motor is produced by Sanyo Denki as part of the P5 Super BL Servo Motors series. This brushless unit is used on positioning and speed-regulated axes in industrial automation. It converts drive commands into controlled rotary motion for packaging, assembly, and inspection equipment.

At its nominal operating point, the motor delivers a continuous shaft power of 500 W, generates a rated torque of 1.589 N·m, and draws 3.9 Arms. The electromagnetic design provides a torque constant of 0.473 N·m/Arms, so current commands from the drive map predictably to mechanical output. Speed regulation extends up to 4500 rpm, aided by a 5.2 ms electrical time constant that lets phase current rise quickly during transients. Copper loss is limited by a phase resistance of 0.94 Ω. Dynamic response is improved by the rotor inertia of 1.161 × 10⁻⁴ kg·m². The square flange is available with an 80 mm or 86 mm pattern and supports direct mounting to gearheads or frames. Brushless motor technology eliminates brush wear, increasing service life in continuous-duty automation cells.

High-load starts can be handled by a maximum stall torque of 5.88 N·m, while a factory-installed holding brake supplies 1.96 N·m of static restraining force when power is removed. The brake circuit operates at 90 V and draws 0.08 A, and its inertia of 0.343 × 10⁻⁴ kg·m² makes a minimal contribution to total rotor inertia. Position feedback is provided by a reduced-wiring incremental encoder with a resolution of 2,000 P/R, simplifying cable runs between the motor and drive. The enclosure has an IP55 protection rating, guarding the windings against dust ingress and low-pressure water jets. The holding brake secures stationary loads when motor power is unavailable, while the encoder supplies the feedback required for closed-loop position and speed control.