MDD090C-N-030-N2M-110GL0

MDD Synchronous Motors

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The MDD090C-N-030-N2M-110GL0 motor by Bosch Rexroth Indramat is part of the MDD Synchronous Motors series. It delivers 10.4 Nm continuous torque at standstill, features an integrated multiturn absolute encoder, and uses digital servo feedback (DSF) for precise control. The standard housing includes a 110 mm centering diameter and a plain shaft with shaft seal. It connects via a left-sided connector and comes without a blocking brake.

Technical Specifications

Balancing
Standard

Holding Brake
Without blocking brake

Centering Diameter
110 mm

Housing
Standard

Encoder
Integrated multiturn absolute encoder

Motor feedback
Digital servo feedback (DSF)

Continuous Torque at Standstill
10.4 Nm

Motor Length Code
C

Motor Size
090

Nominal Speed
3000 min⁻¹

Shaft Seal
With shaft seal

Shaft Type
Plain shaft

Connection Direction
Left

Connection Type
Connector

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Frequently Asked Questions

What happens to positional accuracy if the multiturn absolute encoder loses power?

The integrated multiturn encoder retains absolute position information across power cycles, so homing is avoided after shutdown. If the backup battery or memory fails, the system may still require a re-homing routine.

How should I derate torque if I operate above nominal speed?

Available torque beyond nominal speed typically decreases due to back-emf voltage limits and thermal constraints—so you should calculate continuous torque for the target speed using the motor’s torque/speed curve in the drive manual. In practice, maintain safety margins to avoid overheating or overcurrent.

What installation tolerances are critical for the 110 mm centering diameter to avoid vibration?

Misalignment or eccentricity beyond a few hundred micrometers can lead to increased radial loads and vibration, stressing bearings. Use precision alignment tools and ensure concentricity tolerance better than, say, ±0.03 mm to maintain balance.

Given that the motor has no blocking (holding) brake, how should I handle static load conditions?

For vertical axes or loads that risk falling, you must provide an external brake or mechanical lock (e.g. a geared brake or fail-safe brake). The motor itself cannot hold load when off, so safety measures must be external.

What wiring and shielding practices are recommended for the left-side connector signal cables?

Use twisted-pair, shielded differential cables and route them away from high-current power lines to prevent interference. Maintain proper connector strain relief and ground the shield at a single point (typically at the drive end).

Common Misspellings

Internal Product Review

The MDD090C-N-030-N2M-110GL0 servo motor by Bosch Rexroth offers 10.4 Nm continuous torque and runs at a nominal speed of 3000 min⁻¹. It includes a plain shaft, digital servo feedback, and an integrated multiturn absolute encoder. Commonly used in CNC machines, robotics, and packaging lines, it supports precise motion control in industrial automation.