R911253135
The product in focus is the R911253135 (MDD112B-N-020-N2L-130PA0), a precision digital AC servo motor innovatively crafted by Bosch Rexroth Indramat, in their renowned MDD series. The MDD series motors stand out for their compactness, versatility in serving arrayed applications, and their ability to integrate seamlessly with Indramat digital drive controllers for efficient automation.
Specifically, the R911253135 (MDD112B-N-020-N2L-130PA0) model is equipped with a unique, housing design optimal for natural convection and surface cooling. This allows it to handle intense and continuous start-stop operations. The motor is also safeguarded against water and dust ingress with an IP 65 rating as per EN 60529. The thermal sensor embedded in its stator windings protects the motor from potential thermal overload damage. The heat is effectively discharged to the exterior walls, hence its high overload capacity. The design permits direct attachment of pinions and belt pulleys to the shaft, enabling it to accommodate high radial loads. Furthermore, form-fitting torque transmission is enabled due to the keyed shaft design. The servo feedback is digital and relies on an optical measuring principle to detect positional values. Its nominal speed is marked at 2000 revolutions per minute with a rotor moment of inertia of 120 x 10-4 kgm2.
