R911258505 is part of the 1MB High-Speed Asynchronus Motors Series by Indramat Motors.
Specs
High Metal Content: Yes Inertial: 0.153 Kilograms per Meter Square Operational Current Range: 56-124.2 Amperes Operational Speed Range: 1000-11000 Revolutions per Minute Fit Type: Step Interference Fit Weight: 38.2 Kilograms External Diameter: 72 Millimeters Operational Temperature Range: 0-40 Degrees Celsius