R911261125 (MDD090C-N-030-N2M-110GR1)

Class 155 (class F) allows winding temperatures up to ~155 °C, so your insulation margin supports moderate overloads or elevated ambient conditions. Still, continuous operation in extremely high ambient (> 45–55 °C) may require derating or better cooling.

The absolute encoder ensures position feedback is retained across power cycles, so you don’t need homing routines after every reboot. It also allows faster start-up and better recovery in case of power interruptions.

A plain shaft limits how you connect couplings or pulleys (you may need clamp couplings or pressed fit), but you avoid stress concentrations that can come with keyways. For high torque or shock loads, you might prefer a keyed or shrunk connection to avoid slippage.

Rotor dynamics (inertia), bearing life, and heating are limiting factors: high speed increases centrifugal stresses and bearing wear, so cooling and balancing become critical. Also, torque falls off due to voltage and back-EMF constraints at high RPM.

Select a drive capable of supplying peak currents above the motor’s demanded transient current and matching the voltage rating, ensuring that the drive’s voltage headroom covers back-EMF at full speed. The drive should also support absolute encoder interfaces and braking current paths.