1MR375D-A170

The Bosch Rexroth Indramat 1MR375D-A170 rotor from the 1MB High-Speed Asynchronous Motors series features a Motor Size 375 frame with a Motor Length D configuration and Rotor Design A for high-RPM applications. Its precisely manufactured inside diameter of 170 mm ensures a secure shrink-fit onto compatible spindles, while the friction-locked step interference fit enhances rigidity under dynamic loads. Weighing 132 kg, this rotor balances mass and inertia optimally for high-speed stability. The laminated core with integrated balancing rings and a protective front sleeve maintains low vibration levels in demanding environments.

Transport and maintenance procedures prioritize component integrity: a removable red corrosion protection lacquer preserves the bore during storage and transit, while a set of 17 threaded pins, a Viton O-ring, and an engraved rating plate seal the pressure-oil connections. After installation, the rotor must be dynamically balanced to DIN VDE 0530, Part 14 vibration severity grade, ensuring minimal run-out at rated speeds. Power dissipation is largely absorbed by the coolant fluid, and temperatures can exceed 50 °C under full load, necessitating proper thermal management. Manual oil pumps and an arresting mechanism on the spindle prevent accidental sliding during disassembly, while the cage-type construction supports reliable rotor dynamics.

Supplied with a one-year warranty and shipped via a worldwide logistics network, the 1MR375D-A170 combines precision engineering with secure handling protocols. Its design accommodates maintenance without forced removal, and the combination of shrink-fit mounting and friction-locked interference guarantees repeatable positioning. Ideal for high-speed machining or grinding spindles, this rotor exemplifies robust construction and serviceability.