R911311672 (MSK101D-0300-FN-M2-AG0-RNNN)

Use compatible materials (Al-Mg housings, Viton O-rings) and keep flow/pressure within Rexroth’s liquid-cooling table; design in bleed points and temperature sensing near the inlet. Follow the 3 bar max pressure, 0.11 L channel volume, and condensation-avoidance rule during commissioning.

Higher phase inductance eases current-loop stability but increases electrical time constant, so verify current bandwidth and adjust current controller gains accordingly; also consider cable length/LC effects for EMI. Vendor data for the MSK101D family cites ~3.2 mH and typical torque constants for tuning baselines.

On vertical or safety-critical axes you’ll need an external brake or counterbalance; the drive’s STO alone won’t prevent gravity-induced motion. Rexroth offers alternative brake options with specified holding torques and switching characteristics if required.

This option tightens mechanical runout, reducing radial/axial misalignment error transferred to the load and easing servo tuning for high-precision axes. It is intended for applications like grinding or semiconductor handling where motion quality and spindle-side TIR matter.

The MSK line is typically IP65 with insulation class F, suiting washdown-prone machine spaces when connectors and seals are properly mated. Verify ingress protection at the connector set and any brake/vent interfaces during integration.