MDD090A-N-020-N2M-130PL0

MDD Synchronous Motors

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The Bosch Rexroth Indramat MDD090A-N-020-N2M-130PL0 is a precision motor for digital drive controllers from the MDD Synchronous Motors series. It provides 3.7 Nm continuous torque at 2000 min⁻¹, features an integrated multiturn absolute encoder with Digital Servo Feedback (DSF), a 130 mm centering diameter, keyway shaft, connector interface, standard housing and balancing, and is supplied without blocking brake.

Technical Specifications

Balancing
Standard

Holding Brake
Without blocking brake

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
Left

Connection Type
Connector

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Frequently Asked Questions

What should I consider mechanically when mounting a 130 mm centering-diameter MDD090 motor to a machine frame?

Use the specified Ø130 j6 centering interface and follow torque and perpendicularity tolerances from the project planning manual to avoid preload or misalignment that can cause vibrations or bearing overload. Correct shim/bolting sequence and soft-mount options help maintain encoder accuracy and rotor balance under dynamic loads.

What are the electrical integration points to check when using Digital Servo Feedback (DSF) with modern digital drives?

Confirm your drive supports the DSF protocol and mapping for commutation, speed and absolute position words, and ensure the connector pinout and cable length comply with Rexroth recommendations to avoid signal degradation. Also check stored motor parameter compatibility—many MDD motors include motor-specific parameters in encoder memory that the drive can read for automatic tuning.

What thermal and duty-cycle checks are important for continuous operation at 2000 min⁻¹ nominal speed?

Use the motor’s S1 (continuous) and Sx duty curves to compute RMS torque for your application cycle so the motor’s thermal limit isn’t exceeded; repeated high-current peaks reduce allowable continuous torque and require cooling or derating. For high duty cycles consider liquid cooling options or forced ventilation and verify ambient and mounting conditions against Rexroth planning data.

For retrofit or spare-parts planning in a production line, what electrical/mechanical data should B2B procurement capture for this MDD090 frame?

Record the exact Bosch Rexroth part number, connector orientation, motor length code, encoder variant (multiturn DSF) and centering diameter so replacements are electrically and mechanically drop-in compatible; also capture continuous and peak current limits for drive matching. Keeping the project planning manual and motor parameter file with the asset avoids mismatched firmware or incorrect tuning during swapouts.

What maintenance steps extend service life for an MDD synchronous motor with shaft seal and standard balancing?

Inspect seals and shaft coupling for wear monthly (or per duty), confirm connector seals and cable strain reliefs, and monitor bearing vibration and encoder diagnostics to detect early misalignment or contamination. Keep service records of torque cycles and ambient conditions to predict bearing and insulation replacement intervals instead of relying only on runtime hours.

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Internal Product Review

The MDD090A-N-020-N2M-130PL0 motor by Bosch Rexroth comes with a 130 mm centering diameter, multiturn absolute encoder, and digital servo feedback. It provides 3.7 Nm continuous torque at standstill with a nominal speed of 2000 min⁻¹, making it suitable for digital drive controllers. This motor is commonly applied in automation, packaging, and material handling industries for reliable motion control.