MDD025A-N-100-N2G-040MC0

MDD Synchronous Motors

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The MDD025A-N-100-N2G-040MC0 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Designed for digital drive controllers, the unit converts commanded current into precise torque and speed for small-frame automation axes found in pick-and-place heads, tool spindles, and similar equipment. Its 025 frame size and high base speed allow rapid acceleration where cycle time is critical.

At standstill the motor produces a continuous torque of 0.33 Nm. When supplied with rated excitation it can reach a nominal speed of 10000 min⁻¹, supporting fast positioning tasks. The flange face carries a centering hub with a diameter of 40 mm that aligns the stator with adjacent mechanics. Cables exit on Side A, simplifying routing in cramped panels. Motion feedback is supplied by a resolver feedback sensor, giving the drive continuous position information even in heavy electrical noise. Torque is transmitted through a shaft machined with a keyway, providing positive locking to gears, couplings, or pulleys.

The rotor is dynamically balanced to the vendor’s standard grade, reducing vibration during extended high-speed operation. Because the MDD025A motor is delivered without a blocking brake, holding force must be provided by the drive or external clamps when power is removed. Power and sensor conductors are bundled in a connecting cable with coupling unit, shortening the installation time. A standard cast-iron housing shields the windings, and the output shaft is specified without a shaft seal; therefore the device should not be exposed to pressurized fluids. The single-ended shaft and short length code A keep overall depth minimal for machinery with limited mounting space. Wake Industrial offers a one year warranty on this MDD motor and offers a variety of international shipping options. For questions regarding fault and error codes the free chat tool available on the website can assist with basic troubleshooting needs.

Technical Specifications

Balancing
Standard

Centering Diameter
40 mm

Connection Direction
Side A

Connection Type
Connecting cable with coupling unit

Continuous Torque at Standstill
0.33 Nm

Holding Brake
Without blocking brake

Housing
Standard

Motor Feedback
Resolver feedback

Motor Length Code
A

Motor Size
025

Nominal Speed
10000 min⁻¹

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Shaft Seal
Without shaft seal

Shaft Type
keyway

Frequently Asked Questions

How does the continuous torque at standstill (0.33 Nm) of the Bosch Rexroth MDD025A-N-100-N2G-040MC0 affect its capability in holding loads without slipping?

A 0.33 Nm standstill torque means it can resist modest loads statically; heavier loads will require either mechanical braking or pulsing to avoid drift. In high-cycle or vibration-rich environments, designers should verify that load inertia and moment arms don’t exceed this static torque to ensure positional stability.

What are the advantages and trade-offs of using resolver feedback in this motor compared to encoder feedback?

Resolvers are very robust against electrical noise, vibration, and high temperature, making them well-suited for harsh industrial settings; however, their position resolution is typically lower than high-precision optical encoders. For applications where precision in micro-movements is critical (e.g. sub-micron positioning), an encoder might provide better performance, but at higher cost and with more delicate installation.

In what kind of mounting setups does the “Connection Direction Side A” with a “connecting cable with coupling unit” simplify integration?

Side A connection means the cable exit is fixed to one side, allowing for predictable cable routing and easier integration into drive racks or machine frames without interfering with other components. The coupling unit helps in quick disconnect or replacement, reducing machine downtime during maintenance.

What level of vibration and noise reduction can be expected from “standard balancing” at 10,000 min⁻¹, and how might that influence operation?

Standard balancing reduces rotor eccentricity to tolerances that limit vibrations, but at 10,000 rpm there still will be perceptible vibration/noise compared to “precision” or “super-balanced” rotors; in ultra-quiet or sensitive environments (e.g. cleanrooms, medical packaging) further balancing or isolation may be required. Long-term vibration also accelerates bearing wear, so if applications demand high duty cycles, consider dynamic balancing enhancements or vibration damping mounts.

What is the significance of using “MDD025A-N-100-N2G-040MC0” from Bosch Rexroth in terms of controller compatibility and digital drive requirements?

This model is designed for digital drive controllers, so it expects control loops that can handle resolver feedback and variable speed operation, including firmware or hardware for resolver signal decoding and precise commutation. Using it with an analog or non-resolver-capable drive may limit performance, reduce responsiveness, or require additional signal conversion hardware or modules.

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Internal Product Review

The Bosch Rexroth Indramat MDD025A-N-100-N2G-040MC0 motor runs at 10,000 min⁻¹ and provides 0.33 Nm of continuous torque. It features resolver feedback, a 40 mm centering diameter, and a keyway shaft for stable and accurate operation. This motor is used in pick-and-place, packaging, and indexing tasks in industrial automation.