The R911260286 (MDD090C-N-040-N2L-110GA1) is a standard-design, Bosch MDD series servo motor with two cooling methods: surface cooling and natural convection. Surface cooling necessitates a blower for forced air application, delivering 14.6 Nm output torque and 34.3 standstill continuous current, with a thermal constant of 45 minutes. Natural convection offers 10.4 Nm output torque and 24.4 standstill continuous current, and a thermal constant of 60 minutes. The motor has a maximum torque of 58.6 Nm and maximum current of 145.7 Amps. It features a rotor with 0.0053 kg m2 moment of inertia, a 0.43 Nm/A torque constant at 20 degrees Celsius, and 0.29 Ohms motor windings resistance. The blocking brake holds a torque of 6.5 Nm and draws 0.5 Amps of power at 24 Volts DC. It clamps in 20 ms and releases in 60 ms. The motor, with a plain output shaft and side A power socket, supports digital servo feedback, operates at 4000 RPM, and weighs 23 kg. The black housing, with an optional 40-micrometer secondary paint layer, adds 0.5 kg.
Housing Design: Standard Cooling Method: Surface Cooling/Natural Convection Output Torque (Surface Cooling): 14.6 Nm Continuous Current (Surface Cooling): 34.3 Amps Thermal Time Constant (Surface Cooling): 45 minutes Output Torque (Natural Convection): 10.4 Nm Continuous Current (Natural Convection): 24.4 Amps Thermal Time Constant (Natural Convection): 60 minutes Maximum Torque: 58.6 Nm Maximum Current: 145.7 Amps Motor Rotor Inertia: 0.0053 kg m2 Torque Constant: 0.43 Nm/A at 20°C Motor Windings Resistance: 0.29 Ohms at 20°C Motor Windings Inductance: 1.6 millihenry Shipping Weight: 23 kilograms Brake Type: Blocking Brake Brake Holding Torque: 6.5 Nm Brake Voltage Rating: 24 Volts DC Brake Current Draw: 0.5 Amps Brake Release Time: 60 milliseconds Brake Clamp Time: 20 milliseconds Brake Weight: 0.5 kilograms Power Socket Location: Side A of housing Output Shaft: Plain Speed Rating: 4000 RPM Feedback: Digital Servo Housing Color: Black Optional finish: 40-micrometer additional paint layer.