Product Description:

The 1MR160F-C061 rotor is built by Bosch Rexroth Indramat and belongs to the 1MB High-Speed Asynchronous Motors series. It serves as the inner rotating element of a frameless spindle package, coupling with a stator to generate the torque needed for high-speed machining centers and automated production cells. Because only the active iron and copper are supplied, the machine designer mounts this part directly on the spindle shaft, allowing a compact headstock and reducing overhung mass that could limit acceleration.

Dimensional features govern how the rotor mates with adjacent hardware. A delivery outer diameter of 106.7 mm leaves stock for finish grinding to the final tolerance, while the internal rotor bore of 60.3 mm slips over the shaft before the shrink-fit process. Dynamic balance is corrected through an M6 balancing-ring thread positioned at the drive end. The laminated stack carries 2 pole pairs, establishing the synchronous field pattern used by the matching stator. The unit has an IP00 protection class, so it must be installed inside a sealed motor housing for environmental safety. A step interference fit with a defined allowance secures the rotor to the shaft and maintains concentricity when thermal loads vary during extended duty cycles.

After final machining, the dressed outer diameter is brought to 106.3 mm, guaranteeing a uniform air gap around the stator teeth and minimizing magnetic unbalance. Application dynamics are influenced by a rotor inertia of 0.0161 kg·m², permitting rapid acceleration yet providing enough rotational energy for short power interruptions. The active stack length measures 200 mm, and a frame size of 160 matches standard 1MB stator dimensions. Length code F identifies this axial dimension when several rotor lengths share the same diameter.