R911278457 is part of the MHD Synchronous Motors Series by Indramat Motors.
Product Name: Bosch Rexroth IndraDyn S (MSK) synchronous motors Use: Servo and main drive motors Winding Code: 24 Holding Brake Torque: 32.0 Nm Electrical Connections: Power connector and encoder connector Insulation Class: F Housing: Black prime coating Cooling: Natural convection Protection Class: IP 65 according to DIN VDE 0470