R911275109
The R911275109 (MHD071B-061-NG1-UN) is a synchronous motor from Bosch Rexroth Indramat’s well-regarded MHD series. Used in concert with digital intelligent drive controllers, it is a cost-effective automation solution for a range of applications including packaging and food processing machinery, and machine tools. The R911275109 (MHD071B-061-NG1-UN) is distinguished by its high reliability, its maintenance-free design, and its ability to continuously stop-start due to high repeat frequencies enabled by electrical commutation. Its key parts include the rotor with permanent magnets, the stator with winding, the shaft, the motor encoder, the bearing, the flange socket, the shaft sealing ring, and the holding brake.
Designed with natural convection cooling, the motor has an IP 65 protection category and its housing is coated in prime black for added durability. The motor operates optimally at temperatures from 0 to 40 degrees, and can be stored or transported at temperatures ranging from -20 to 80 degrees. The motor’s maximum installation height is 1000 meters above sea level and it has a maximum permissible humidity of 95% without condensation. Its mechanical features include a time constant of 45 min, maximum torque of 32.0Nm, and an inertial moment of 8.7 x 10-4. The R911275109 (MHD071B-061-NG1-UN)’s electrical parameters include a continuous standstill torque of 9.0Nm, a continuous standstill current of 13.2 A, a peak current of 50.5 A, a rated speed of 5000 rpm, rated torque of 5.3Nm, rated current of 5.5 A, and a rated voltage of 368 V. The motor also comes with digital servo feedback, a plain shaft with a sealing ring, and a substantial 5.0 Nm holding brake.
