MDD025A-N-100-N2K-040MB0

MDD Synchronous Motors

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MDD025A-N-100-N2K-040MB0, Bosch Rexroth Indramat, MDD Synchronous Motors series motor delivers high-dynamic performance in a compact footprint. Designed as a Product Type: Motor for digital drive controllers, it leverages integrated electronics for seamless communication in automated systems. This unit features an Integrated absolute encoder and Resolver feedback to ensure precise position and velocity detection. Its Housing: Standard construction and Balancing: Standard guarantee consistent operation across a wide range of industrial applications.

Engineered for demanding servo tasks, the motor offers a Continuous Torque at Standstill: 0.33 Nm and sustains speeds up to Nominal Speed: 10000 min-1. The Centering Diameter: 40 mm and Motor Size: 025 combine to minimize mounting complexity while preserving robustness. A Shaft Type: keyway and Output Shaft: Shaft With Keyway Per DIN 6885 sh. 1, 8-68 Edition facilitate secure coupling to drivetrains. Connection options include a Connection Type: Connector oriented on Connection Direction: Side B, and the design omits a Holding Brake: Without blocking brake for applications that integrate external braking modules.

Integration is streamlined by the Shaft End: Standard (without side B shaft end) interface and omission of a Shaft Seal: Without shaft seal, simplifying maintenance without sacrificing environmental resilience. The Motor Length Code: A ensures compatibility with existing machine frames and reduces commissioning time. This motor's combination of compact form, high-speed capability, and reliable feedback makes it ideal for precision indexing, robotics, and packaging equipment where both repeatability and uptime are critical.

Technical Specifications

Balancing
Standard

Holding Brake
Without blocking brake

Centering Diameter
40 mm

Housing
Standard

Encoder
Integrated absolute encoder

Motor Feedback
Resolver feedback

Continuous Torque at Standstill
0.33 Nm

Motor Length Code
A

Motor Size
025

Nominal Speed
10000 min⁻¹

Shaft Seal
Without 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)

Output Shaft
Shaft With Keyway Per DIN 6885 sh. 1, 8-68 Edition

Frequently Asked Questions

What is the torque ripple behaviour at high speed for the Bosch Rexroth Indramat MDD025A-N-100-N2K-040MB0, and how does it affect precision motion near 10,000 rpm?

Because this motor uses both resolver and integrated absolute encoder feedback, it can correct for position errors due to torque ripple, but residual ripple will grow with speed. In precision applications near nominal speed, one must ensure the drive controller has sufficient resonance damping and the mechanical coupling is stiff to avoid oscillation or chatter.

What implications do the “without shaft seal” design have on environmental protection and maintenance intervals?

Lack of a shaft seal reduces protection against dust, moisture, and contamination at the shaft interface, lowering its IP rating in that region. In dusty or humid environments, more frequent inspections and use of protective covers or housings are necessary to maintain reliability

Given its continuous torque at standstill is 0.33 Nm, what current and thermal considerations should be made if the motor is to be held at standstill under load for extended periods?

Holding torque at zero speed draws continuous current in stator windings, generating heat without rotor rotation for cooling; continuous standstill operation can cause thermal buildup. Proper drive current limiting, thermal monitoring, and possibly duty cycling or forced cooling are advised to avoid overheating.

What roles do the integrated absolute encoder and resolver feedback play, and how do they compare in terms of response speed and precision?

The resolver provides robust, high-speed angular position feedback with good immunity to electrical noise but lower resolution; the absolute encoder gives higher resolution and exact position on power-up (no homing). For high-accuracy dynamic control (e.g. robotics), the encoder is critical for precision; the resolver supports continuous feedback under harsh conditions.

What is the effect of using a keyway shaft per DIN 6885 sh. 1, 8-68 edition for high torque transmission and alignment?

A keyway shaft ensures positive torque transmission without relying solely on friction, reducing slippage under load; however, the key introduces stress concentrations that can become fatigue points if misaligned or overloaded. Proper key dimensions, torque ratings, and precise machining are essential to prevent wear or failure, especially at high rpm.

Common Misspellings

Internal Product Review

The Bosch Rexroth Indramat MDD025A-N-100-N2K-040MB0 motor is built for digital drive controllers, offering 0.33 Nm torque at standstill and speeds up to 10,000 rpm. It includes integrated resolver feedback and a shaft with keyway per DIN 6885 for reliable drivetrain coupling. This motor is widely used in robotics, packaging lines, and precision indexing applications.