R911336952 (MSK101D-0300-FN-S2-AG0-RNNN)

With an optical singleturn EnDat 2.1 encoder (2048 signal periods), do I need homing after power-off?

Singleturn absolute means the drive knows position within one revolution at power-on, but multi-turn angle is not retained—home if the axis moved >1 turn while unpowered. Many EnDat 2.1 encoders also provide SIN/COS tracks that the drive interpolates for finer resolution.

Can non-Rexroth drives run this EnDat 2.1 feedback?

Yes, if the controller supports EnDat 2.1 with analog 1 Vpp tracks; EnDat 2.2 devices are backward-compatible at the command level but analog signals still matter for some drives. Verify your controller’s EnDat mode and wiring for the 1 Vpp channels before commissioning.

What are the practical benefits of the “increased concentricity / plain shaft” design?

Reduced runout lowers cyclic torque ripple and coupling misalignment forces, which helps precision at low speeds and extends bearing life. It also improves encoder signal stability, easing sub-micron interpolation.

How should I handle shaft and bearing loads on an MSK101D?

Keep axial force under the specified limit (≈500 N for MSK101 family) and size couplings/pulleys so radial load vs. overhang length stays within the MSK101 curves; exceeding these reduces L10 bearing life. Use the family’s Fr/Fa diagrams during mechanical design.

What thermal behaviors affect cycle-time in high-duty B2B applications (metal forming, robotics, semiconductor)?

Liquid cooling and the MSK101D’s long thermal time constant (~100 min) damp temperature swings, so torque droop over long programs is reduced versus naturally cooled variants. Still, validate duty cycles with the drive’s thermal model to avoid over-temperature faults on long peaks

MSK101D0300FNS2AG0RNNN

MSK101D 0300 FN S2 AG0 RNNN

MSK-101D-0300-FN-S2-AG0-RNNN

The MSK101D-0300-FN-S2-AG0-RNNN servomotor from Bosch Rexroth features liquid cooling, a plain shaft, and delivers 57.0 Nm continuous torque at standstill. It includes an optical singleturn encoder with EnDat2.1 interface and 2048 signal periods resolution. This motor is ideal for precision-driven applications in robotics, metal forming, and semiconductor machinery.