MDD090C-N-030-N2L-130GB1

MDD Synchronous Motors

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The Bosch Rexroth Indramat MDD090C-N-030-N2L-130GB1 from the MDD Synchronous Motors series features digital servo feedback. It delivers a continuous torque at standstill of 10.4 Nm, includes a 6.5 Nm brake, and runs at a nominal speed of 3000 min-1. The motor has a 130 mm centering diameter and comes with a shaft seal.

Technical Specifications

Balancing
Standard

Holding Brake
With blocking brake

Holding Brake Torque
6.5 Nm

Centering Diameter
130 mm

Housing
Standard

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 B

Connection Type
Connector

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Frequently Asked Questions

What does the continuous torque at standstill imply for dynamic start-stop operations?

It means the motor can hold 10.4 Nm without rotating, which is critical for starting loads without slipping and ensures stable torque at zero speed. For high-duty start/stop cycling, thermal load during repeated holds must be considered to avoid overheating.

How does the 6.5 Nm blocking (holding) brake affect safety and system design?

The brake provides enough torque to safely hold the axis when power is off, reducing need for external brakes in many safety applications. However, integration must allow its control (24 V DC etc.), access for maintenance, and check wear over its rated life.

In what way does the digital servo feedback (DSF) enhance positioning accuracy and loop stability?

DSF provides high resolution optical encoder feedback allowing fine position/speed control with low latency, which improves tracking, reduces overshoot, and tightens control loops. The resolution and signal quality must align with the drive/NC controller’s capability to fully exploit it.

What installation considerations are there for a shaft seal in this motor?

The shaft seal helps prevent ingress of contaminants (dust, moisture), increasing reliability especially in harsh environments; but it adds friction and requires correct alignment to avoid seal wear. Periodic inspection is needed, especially if exposed to frequent radial loads or shafts with keyways.

How does the nominal speed of 3000 min⁻¹ interact with torque capability across speed range?

At high speed the available torque drops due to voltage limits and heating; continuous torque specified at standstill degrades with rising rpm following the torque-speed curve. When specifying for application, ensure the load torque requirement at intended operating speed lies well under that degraded capability.

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Internal Product Review

The MDD090C-N-030-N2L-130GB1 motor by Bosch Rexroth features a continuous torque of 10.4 Nm and a nominal speed of 3000 min⁻¹. It includes a blocking brake with 6.5 Nm holding torque, digital servo feedback, and a plain shaft with side B connector. This motor is ideal for industrial automation in robotics, packaging, and CNC machinery.