MDD093D-N-040-N2L-130PB0

MDD Synchronous Motors

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The MDD093D-N-040-N2L-130PB0 motor from Bosch Rexroth Indramat's MDD Synchronous Motors series delivers precise digital AC servo performance. It features a motor length code D, a centering diameter of 130 mm, a standard balancing without blocking brake, and a shaft seal. The motor provides a continuous standstill torque of 24.0 Nm and a nominal speed of 4000 min⁻¹ with digital servo feedback. Connection is via a side B 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
24.0 Nm

Motor Length Code
D

Motor Size
093

Nominal Speed
4000 min⁻¹

Shaft Seal
With shaft seal

Shaft Type
keyway

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 cooling or thermal management considerations should one take at 4000 rpm for this motor?

At high speed, internal losses and copper/iron heating increase, so heat dissipation must be managed via ambient airflow or forced cooling. The motor must operate within its allowable temperature range to avoid demagnetization or insulation degradation over time.

How does “Standard balancing” affect high-speed operation up to 4000 min⁻¹?

Standard balancing ensures the rotor meets acceptable vibration tolerances for nominal speed, but for extended operation near maximum rpm, high-precision balancing may be preferred. In precision machines, residual imbalance at high speed can shorten bearing life or degrade accuracy.

What are the implications of a keyway shaft type on coupling selection and torque transmission?

A keyway shaft provides a classic positive torque transmission interface, but care must be taken to size the shaft, key, and coupling to avoid shear or stress concentrations. For high dynamic loads, backlash-free couplings or interference fits are recommended to avoid slippage.

How does the digital servo feedback (DSF) interface affect control performance?

DSF provides high-resolution position and speed signals suitable for closed-loop controllers, improving responsiveness, precision, and diagnostics. The control loop bandwidth must be matched to the motor’s dynamic capability for optimal performance.

In what scenarios would the presence of a shaft seal make a difference in reliability?

The shaft seal helps prevent dust, moisture, or lubricants from entering the motor housing, which is crucial in harsh or dusty industrial environments. It increases longevity and reduces risk of contamination-induced failure in applications like packaging or CNC centers.

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Internal Product Review

The MDD093D-N-040-N2L-130PB0 motor from Bosch Rexroth is used in industries like robotics, CNC systems, and packaging lines. It offers 24.0 Nm continuous torque and a nominal speed of 4000 min⁻¹. Key features include a keyway shaft, digital servo feedback, and a 130 mm centering diameter.