R911345915 (MSK101D-0300-FN-M1-BG0-NNAN)

What benefits does an optical multiturn absolute encoder with Hiperface deliver?

The optical multilturn absolute encoder preserves position across power cycles and offers high resolution feedback via Hiperface, allowing the drive to resume without referencing. That eliminates homing time and reduces cumulative error in multi-axis systems.

What limits the maximum current of 137.7 A in this motor?

The constraint comes from thermal limits in the windings and insulation system, plus cooling capacity and voltage drive capability. Exceeding it risks insulation breakdown or overheating even if torque could be mechanically supported.

How should coolant parameters be selected for this motor?

Use coolant (e.g. water or water–glycol) with pH between 6–8, ensure the∆T across the motor does not exceed ~10 °C under nominal losses, and limit system pressure to ≤ 3.0 bar.

What is the impact of the 3,200 mH winding inductivity on drive tuning?

The relatively high inductance slows current dynamics and demands sufficient drive bandwidth and compensation to maintain servo performance. You’ll need a drive capable of handling slow current rise times without oscillations.

What mechanical loads can the motor shaft sustain (radial/axial)?

The permissible radial and axial forces are published in the Rexroth “Bearing & Shaft Load” section (e.g. ≤ 500 N axial), so external loading must stay within those limits to avoid bearing fatigue.

MSK101D0300FNM1BG0NNAN

MSK101D 0300 FN M1 BG0 NNAN

MSK-101D-0300-FN-M1-BG0-NNAN

The MSK101D-0300-FN-M1-BG0-NNAN servomotor by Bosch Rexroth is a liquid-cooled IndraDyn S synchronous motor with a plain shaft and optical multiturn absolute encoder using Hiperface. It delivers 57.0 Nm continuous and 160.0 Nm peak torque with 34.9 A standstill current. Commonly used in CNC machines, robotics, and automated production systems.