R911260286 (MDD090C-N-040-N2L-110GA1)

MDD Synchronous Motors

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The R911260286 (MDD090C-N-040-N2L-110GA1) is a Bosch MDD series servo motor designed for digital drive controllers, featuring a standard balancing and housing configuration. It supports two cooling methods: surface cooling with a blower for forced air and natural convection. Under surface cooling, it delivers up to 14.6 Nm output torque at 34.3 A continuous standstill current with a 45-minute thermal constant, while natural convection achieves 10.4 Nm torque at 24.4 A and a 60-minute thermal constant. The rotor has a 0.0053 kg·m² moment of inertia, and the motor reaches a maximum torque of 58.6 Nm at a maximum current of 145.7 A. The torque constant is 0.43 Nm/A at 20°C with a winding resistance of 0.29 Ω. The blocking brake provides 6.5 Nm holding torque, operates at 24 V DC drawing 0.5 A, clamps in 20 ms, and releases in 60 ms. The unit, with a 110 mm centering diameter and plain output shaft, weighs 23 kg and is capable of 4000 RPM. Connections are made via side A with a connector, digital servo feedback is integrated, and optional housing paint increases weight by 0.5 kg.