R911333572 (MSK101D-0300-NN-M1-BG3-NNNN)

What mechanical alignment tolerances are critical when coupling to a plain shaft?

Axial and radial misalignment must be kept within tight bounds (typically a few 0.01 mm) to avoid bearing loads and vibration—use precision coupling or flexible spider couplings. Also, ensure shaft runout is minimised to preserve encoder accuracy and life of connected components.

How does the holding brake (120 Nm) affect start-up and stopping behavior?

The brake must be electrically released before motion and engaged only after the motor is fully stationary; failure to do so can cause excessive torque on the drive or mechanical stress. The brake adds inertia and must be considered when sizing deceleration ramps to avoid skidding or overshoot.

Given a peak torque of 160 Nm, what duty cycle can it sustain without thermal overload?

The motor can deliver peak torque only in short bursts (e.g., during acceleration), but sustained operation near peak will heat the windings. The continuous rating of 57 Nm (at standstill) gives a guideline—long periods above that require cooling margins or reduced duty cycles.

What considerations are there for EMC and cable length given the B-Side power connector interface?

Long power and encoder cables may pick up noise; use shielded twisted pairs and keep cable impedance low to avoid voltage drop and feedback errors. Also, follow Rexroth’s recommended cable lengths and filters to maintain signal integrity, especially over distances beyond a few tens of meters.

How does the 3,000 rpm nominal speed (Rated Speed Code 0300) affect gearing and load matching?

That nominal speed forms the basis for dimensioning gearboxes and transmission ratios; if your load demands higher speed, you’ll lose torque margin. Conversely, for low-speed high-torque loads, gear reduction must not push the motor into mechanical resonance or overheating zones.

MSK101D0300NNM1BG3NNNN

MSK101D 0300 NN M1 BG3 NNNN

MSK-101D-0300-NN-M1-BG3-NNNN

The Bosch Rexroth MSK101D-0300-NN-M1-BG3-NNNN servomotor is built for demanding automation tasks in packaging, robotics, and indexing systems. It delivers 57.0 Nm continuous torque (naturally cooled), 160.0 Nm peak torque, and operates at 3000 rpm with a multiturn Hiperface encoder. Its 120 Nm holding brake and plain shaft support accurate positioning and secure holding.