Product Description:

The KA850BS0 servo motor is manufactured by Sanyo Denki as part of the K SANMOTION Servo Motors series. Designed for mid-power rotary axes in automated assembly and material-handling equipment, the unit operates with a matched digital drive to provide velocity, position, and torque control. Its permanent-magnet rotor and incremental encoder allow the controller to close the servo loop accurately. Typical duties include indexing conveyors, tooling spindles, and compact gantries where deterministic motion and moderate continuous power are required.

The motor develops a continuous mechanical output of 500 W at a rated speed of 2500 rpm. At this operating point, it produces 1.91 N·m of rated torque while drawing 7.4 A from the drive. The armature has an inductance of 0.86 mH, which shapes the time constant of the phase windings and affects how quickly torque builds after a command. These operating parameters affect thermal loading on the stator and the required capacity of upstream power electronics. When acceleration commands exceed nominal values, the servo can temporarily exceed its rated output and torque. The continuous ratings can be used to select cables and protective devices and to estimate duty cycles for repetitive industrial operation.

During short bursts, the motor can generate a peak stall torque of 16.7 N·m. The rotor inertia is 6.0 × 10⁻⁴ kg·m², supporting load matching calculations and dynamic response analysis. Position feedback is supplied by a built-in encoder with a resolution of 2000 P/R, enabling smooth interpolation for mid-speed contouring. The motor has a mass of 5.04 kg, which facilitates installation while providing thermal mass for heat dissipation. The brake operates at 90 VDC, while the armature is rated for 80 V. The motor can reach a maximum speed of 3000 rpm, providing additional speed capacity above its continuous operating point.