MDD090C-N-030-N2M-110GA1

MDD Synchronous Motors

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The MDD090C-N-030-N2M-110GA1 from Bosch Rexroth Indramat features a blocking brake with 6.5 Nm torque and a 110 mm centering diameter. As part of the MDD Synchronous Motors series, this motor delivers a continuous standstill torque of 10.4 Nm and a nominal speed of 3000 min⁻¹.

It has an integrated multiturn absolute encoder, digital servo feedback, and a shaft seal. Side A connector and length code C ensure flexible installation.

Technical Specifications

Balancing
Standard

Holding Brake
With blocking brake

Holding Brake Torque
6.5 Nm

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
Side A

Connection Type
Connector

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Frequently Asked Questions

What is the effect of having a 6.5 Nm holding (blocking) brake on dynamic performance?

The brake adds rotational inertia and friction during engages/disengages, which can slow down rapid reversals and reduce acceleration responsiveness. In high-speed or frequent start/stop cycles, you’ll want the drive to compensate by slightly higher torque margins.

How does the integrated multiturn absolute encoder improve homing and recovery?

Because the encoder retains exact position over power cycles, the drive doesn’t need to re-home or search for index pulses after a shutdown—this reduces downtime and alignment errors. It also helps in programs that require absolute referencing without external reference marks.

How does the plain shaft with shaft seal affect coupling methods or backlash?

A plain shaft allows direct coupling (rigid or flexible) with minimal backlash if properly keyed and tightened, but the shaft seal restricts how deep couplings or sleeves can penetrate the shaft. You must ensure any coupling doesn’t scrape or compromise the seal or require disassembly for inspection.

What noise or vibration constraints does “standard balancing” imply in precision machines?

“Standard balancing” meets industrial-level vibration tolerances but may not suffice for ultra-high-speed or ultra-quiet applications; residual imbalance might excite structural modes or limited spindle rigidity. For very sensitive systems, upgrading to “precision balancing” or dynamic balancing under load may be necessary.

How does digital servo feedback (DSF) compare with incremental encoders in automation systems?

DSF provides absolute position, speed, and error diagnostics in a digital frame, eliminating the need for separate reference marks and simplifying signal wiring. It also inherently tolerates noise better and can support more sophisticated diagnostic or predictive maintenance features.

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Internal Product Review

The MDD090C-N-030-N2M-110GA1 motor from Bosch Rexroth delivers 10.4 Nm continuous torque and operates at 3000 min⁻¹. It includes a 6.5 Nm holding brake, a plain shaft with shaft seal, and an integrated multiturn absolute encoder for digital servo feedback. This motor is commonly used in CNC machines, packaging systems, and industrial automation.