1MR310D-A120

The Bosch Rexroth Indramat 1MR310D-A120 rotor from the 1MB High-Speed Asynchronous Motors series is engineered for the most demanding spindle drive applications. It features a frame size of 310 with a motor length of D and a precision With Step Interference Fit rotor design. The unit weighs approximately 80 kg and delivers an inertia of 0.595 kgm^2, providing both high acceleration and stable speed regulation. A coated core and balancing rings on the frontal section ensure minimized vibration and extended service life.

Detailed technical specifications of the 1MR310D-A120 include an inside diameter of 120 mm matching the corresponding 1MB motor spindle interface. Its rotor design employs graduated diameters that guarantee precise alignment and damage-free dismounting under maintenance. The insulation system achieves an F class rating in accordance with DIN VDE 0530, while the recommended ambient temperature range of 5 °C to 45 °C preserves insulation integrity and prevents thermal overload. Additional protective features include corrosion-resistant coatings and sleeve treatments for operation in humid or dusty environments.

Integration of the 1MR310D-A120 within Bosch Rexroth Indramat’s modular spindle assemblies simplifies installation and maximizes system uptime. Its balanced design and F-class insulation ensure high reliability under continuous duty cycles, reducing unplanned stoppages. Ideal for high-speed milling and precision grinding, the rotor delivers consistent performance in advanced manufacturing and automation environments.