MDD090A-N-020-N2M-130PR1

MDD Synchronous Motors

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The MDD090A-N-020-N2M-130PR1 motor from Bosch Rexroth Indramat is part of the MDD Synchronous Motors series. It features an integrated multiturn absolute encoder, digital servo feedback (DSF), a holding brake with 6.5 Nm torque, and a continuous standstill torque of 3.7 Nm. The motor offers standard balancing, a centering diameter of 130 mm, and a nominal speed of 2000 min-1. It uses a connector-style connection with a right-hand orientation.

Technical Specifications

Balancing
Standard

Holding Brake
With blocking brake

Holding Brake Torque
6.5 Nm

Centering Diameter
130 mm

Housing
Standard

Encoder
Integrated multiturn absolute encoder

Motor feedback
Digital servo feedback (DSF)

Continuous Torque at Standstill
3.7 Nm

Motor Length Code
A

Motor Size
090

Nominal Speed
2000 min⁻¹

Shaft Seal
With shaft seal

Shaft Type
keyway

Connection Direction
Right

Connection Type
Connector

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Frequently Asked Questions

Can the MDD090A-N-020-N2M-130PR1 motor be used in B2B machine tools or CNC spindles, and what trade-offs exist?

Yes — its DSF and absolute encoder suit precise positioning in CNC and factory automation, but the 3.7 Nm continuous torque limits direct spindle use to small fixtures or high-gear ratios; for heavier spindles consider larger MDD variants with higher continuous torque or add gearing for required stiffness.

What should maintenance teams inspect periodically on an MDD090A motor used in packaging lines?

Regularly check brake engagement and pad wear, shaft seal condition, connector integrity, and encoder diagnostics; include vibration/balance checks after any mechanical incident since the motor is standard-balanced and may need rebalancing for high-speed runs.

Are there specific EMC or grounding practices required for DSF motors when retrofitting older systems?

Yes — maintain short shielded feedback cable runs, ground the motor housing at a single point, and follow the drive/motor EMC instructions to avoid feedback noise causing commutation errors or servo instability.

What are the thermal and cooling expectations for this MDD090A motor in high-duty applications?

The MDD family is designed for natural convection and surface cooling; for continuous high torque duty or tightly packed cabinets, you should specify forced cooling or derate torque to avoid thermal shutdowns and accelerate bearing life.

How should I size a gearbox or coupling for a motor with 3.7 Nm continuous standstill torque?

Use the continuous 3.7 Nm to size transmission for sustained static loads and apply the motor’s peak/short-term torque (from the datasheet) for dynamic events; include a safety factor (typically 1.5–2×) for duty cycles with frequent starts/stops.

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Internal Product Review

The MDD090A-N-020-N2M-130PR1 motor from Bosch Rexroth delivers 3.7 Nm continuous torque and 2000 min⁻¹ nominal speed. It features a 6.5 Nm blocking brake, integrated multiturn absolute encoder, and digital servo feedback. This motor is suitable for applications in packaging machinery, CNC systems, and factory automation.