MDD090C-N-030-N2M-110PA2

MDD Synchronous Motors

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The MDD090C-N-030-N2M-110PA2 from Bosch Rexroth Indramat delivers 10.4 Nm torque and has an integrated multiturn encoder. Part of the MDD Synchronous Motors series, it runs at 3000 min⁻¹ and provides digital servo feedback. It includes an 11 Nm blocking brake and a keyway shaft.

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With IP65 protection, it uses natural convection and a 115/230 VAC blower for cooling. The housing has black prime coating. It has a 110 mm centering diameter and a 12-pin flanged connector on Side A.

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Technical Specifications

Balancing
Standard

Holding Brake
With blocking brake

Holding Brake Torque
11.0 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
keyway

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 practical effect does the 11.0 Nm holding (blocking) brake torque have in vertical-axis applications?

The brake ensures that under power-off conditions the rotor is held firmly against reverse motion or gravity, but you need to size for static load plus safety margin, as the brake’s friction wear over time can reduce this holding torque.

In a servo loop, what constraints does the “digital servo feedback (DSF)” impose on controller selection or wiring?

Your controller must support the same DSF interface (protocol, resolution, sampling rate) and you must use shielded twisted-pair or differential wiring to preserve signal integrity over cable length.

What trade-offs should you account for when choosing between natural convection and surface cooling modes?

Natural convection gives quieter operation and less complexity but limits continuous power; surface cooling (via blower or forced airflow) allows higher torque or longer duration under load, but adds auxiliary cost, noise, and wiring.

What should a designer check regarding radial and axial loads given the shaft seal and bearing structure?

The shaft seal suggests there is a labyrinth or lip seal design limiting contamination ingress, so high radial/axial loads should stay within the motor’s bearing load ratings to avoid seal damage and premature bearing failure.

In high-speed operation (toward 3000 rpm), what is a likely limiting factor besides torque—especially over time?

Thermal dissipation and bearing fatigue life become limiting, so ensure adequate cooling, consider derating in warmer ambient, and check the bearing lubrication regime under extended high-rpm operation.

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Internal Product Review

The MDD090C-N-030-N2M-110PA2 motor from Bosch Rexroth features a keyway shaft, shaft seal, and integrated multiturn absolute encoder. It delivers 10.4 Nm continuous torque at standstill and 11.0 Nm holding brake torque with a nominal speed of 3000 rpm. This motor is used in CNC machines, packaging systems, and robotics.