MDD090C-N-030-N2L-130PR0

MDD Synchronous Motors

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The MDD090C-N-030-N2L-130PR0 is a size 090 synchronous motor with a centering diameter of 130 mm. Manufactured by Bosch Rexroth Indramat in the MDD Synchronous Motors series, it offers 10.4 Nm continuous torque at standstill. It uses digital servo feedback and a sealed keyway shaft with right connector.

Technical Specifications

Balancing
Standard

Holding Brake
Without blocking brake

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
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

What are the implications of a keyway shaft in terms of load transmission and stress concentration?

A keyway allows positive torque transfer to couplings or gears but introduces stress risers at the slot corners, so fillets and proper key sizing must be observed to prevent fatigue or cracking under cyclic loads. Avoid overhanging loads or high bending at the key interface.

How does “digital servo feedback (DSF)” differ from analog encoders in dynamic performance?

DSF provides high-resolution, synchronous serial feedback with better noise immunity and often built-in diagnostics, which helps low-latency, high-bandwidth control loops. That leads to tighter position/velocity control and fewer calibration steps in multi-axis systems.

What startup current/torque behavior should I expect, given the “continuous torque at standstill = 10.4 Nm”?

The motor can provide 10.4 Nm indefinitely at standstill (i.e., without rotation) as long as temperature limits are respected; however, transient stall or torque surges can exceed that, constrained by current limits in the drive. The drive must limit peak current to avoid overheating or demagnetizing the motor.

When should I worry about axial or radial shaft loads affecting motor reliability?

Even though this servo motor is designed for torque, high radial or axial loads from end-couplings or external forces (e.g. gravity, tooling) can degrade bearing life. Use external bearings or supports if loads exceed the motor’s rated limits (consult Bosch Rexroth bearing specs).

How does the right-angle connector orientation affect cable routing and electromagnetic compatibility?

The 90° connector helps reduce cable bending and strain, especially in tight enclosures, but proper shielding and routing (keeping power and feedback separated) are essential to minimize EMI coupling or signal noise. Avoid sharp cable bends right at the connector to maintain shielding integrity.

Common Misspellings

Internal Product Review

The MDD090C-N-030-N2L-130PR0 motor from Bosch Rexroth delivers 10.4 Nm continuous torque at 3000 min⁻¹ with digital servo feedback and a keyway shaft. It includes a 130 mm centering diameter, right-angle connector, and shaft seal. This motor is commonly used in CNC machines, packaging lines, and automated robotics.