R911277752
The R911277752 (MDD115B-N-015-N2L-130PA0) is a high performance digital AC servo motor from Bosch Rexroth Indramat. With a frame size of 115 and length labelled as "B," the motor offers impressive 1500 RPM nominal speed. Its continuous torques at standstill are 28 Nm under natural convection and an elevated 42 Nm under surface cooling. Similarly, continuous current at standstill is maintained at 20.9 Amps under natural convection and appreciably higher 31.3 Amps with surface cooling. The R911277752 (MDD115B-N-015-N2L-130PA0) can theoretically deliver a significant maximum torque of 87.1 Nm and a maximum current of 93.9 Amps, while its rotor moment of inertia stands at 0.0123 kg m2.
This motor uses standard balance class and end shaft, and can readily support digital servo feedback. Power supply is via a drive controller connected to a power connector on the motor housing’s side A. An optional blocking brake can supplement the standard main shaft with a DIN 6885-1 keyway. With a centering diameter of 130 millimeters, the motor is optimal for ambient temperatures between 0 and 45°C for operation and -20 to 80°C for storage. The maximum installation elevation should not exceed 1000 meters. This IP65 rated model ensures full protection against dust, carrying a weight of approximately 33 kilograms, and a reach of thermal time constant at 90 minutes with natural convection and 60 minutes with surface cooling.
