Product Description:

Sanyo Denki produces the KB506BXX servo motor as part of its K SANMOTION Servo Motors series. Designed for compact positioning axes in industrial automation, the unit converts electrical power into controlled mechanical rotation through its permanent-magnet armature. The motor provides low-inertia, medium-torque output suitable for pick-and-place carriages, light conveyors, and other equipment that requires responsive movement. The KB506BXX designation identifies a 54 mm frame device intended to pair with compatible SANMOTION amplifiers for closed-loop velocity and torque regulation.

At the electrical interface, the armature has an inductance of 0.5 mH and a resistance of 1.1 Ω, allowing the drive to predict current rise accurately when shaping PWM pulses. Under steady thermal conditions, the motor delivers 0.24 N·m of continuous stall torque while maintaining its rated current of 3.9 A. During operation, it reaches a rated speed of 3000 rpm and produces 0.06 kW of mechanical power at the shaft with a rated torque of 0.19 N·m. These operating values are achieved with a DC bus voltage of 24 V, making the motor suitable for low-voltage equipment and battery-powered systems. The short electrical response allows the motor current to change quickly when the controller commands a new torque level.

The servo can produce a peak stall torque of 1.8 N·m for quick indexing moves before thermal limits intervene, while its holding torque of 0.29 N·m restrains static loads. The rotor inertia is 0.22 × 10⁻⁴ kg·m², and the motor has an overall mass of 0.91 kg, which reduces the reflected load on precision stages. A 54 mm flange allows direct attachment to compatible gearheads or mounting brackets. The mechanical time constant of 7.4 ms supports stable velocity-loop response when the controller is tuned for the connected load. Current regulators can respond rapidly because the electrical time constant is only 0.45 ms, which limits phase lag at higher PWM frequencies.