Product Description:

The KB406XXX is a permanent-magnet servo motor produced by Sanyo Denki within the K SANMOTION Servo Motors series. It is intended for low-power positioning axes in industrial automation, where compact size and repeatable motion are required for pick-and-place heads, inspection tables, or miniature conveyors. The motor converts controlled armature current into proportional shaft torque, allowing a drive to regulate velocity and position in real time.

This model delivers a rated mechanical output of 60 W while running at a nominal speed of 3000 rpm. Under those conditions, the shaft produces a steady torque of 0.19 N·m, matching the motor to couplings or gearheads that can use that level of torque without oversizing. The copper windings have an armature resistance of 0.94 Ω, which affects voltage drop and thermal dissipation in the current regulator. The armature inductance is 0.5 mH, which influences current-loop bandwidth and the choice of PWM switching frequency. With a drive supply of 24 V and a rated armature current of 4.1 A, the motor reaches its rated operating point while remaining within the temperature limits of the insulation system. The torque constant is 0.056 N·m/A, and the corresponding voltage constant is 5.9 × 10⁻³ V per rpm.

For transient events, the motor can withstand a peak stall torque of 1.2 N·m, providing substantial overload capacity for fast acceleration or shock loads before magnetic saturation occurs. Dynamic response is characterized by a mechanical time constant of 3.2 ms, indicating that the rotor speed reaches 63% of a commanded step within that interval when driven by constant torque. The assembled unit weighs 0.50 kg and mounts to machinery through a 42 mm square flange. This compact footprint and the rotor inertia of 0.108 × 10⁻⁴ kg·m² support rapid reversal without imposing excessive structural stress. A continuous stall torque of 0.20 N·m indicates the available static holding torque while the motor remains within its permissible thermal limit.