MDD025A-N-100-N2K-040PD0
MDD Synchronous Motors
The Bosch Rexroth Indramat MDD025A-N-100-N2K-040PD0 is a high-performance digital AC servo motor from the MDD Synchronous Motors series, designed for precision motion control in industrial automation. This part_number features integrated feedback electronics and robust mechanical design, providing reliable and accurate positioning in dynamic applications. Manufactured by Bosch Rexroth Indramat, this model offers a compact housing and standardized interfaces for straightforward installation. The MDD025A-N-100-N2K-040PD0 balances exceptional speed capabilities with torque stability to meet the demands of modern servo drive systems. Its modular design ensures compatibility with a wide range of digital drive controllers, reducing integration time and overall system cost.
The technical specification set for the MDD025A-N-100-N2K-040PD0 includes a Motor Size: 025 and Motor Length Code: A within a Housing: Standard assembly. It delivers Continuous Torque at Standstill: 0.33 Nm while operating at a Nominal Speed: 10000 min⁻¹ and is balanced to Balancing: Standard criteria. Feedback is provided via Motor Feedback: Resolver feedback combined with an Encoder: Integrated absolute encoder for precise position determination. The drive shaft employs a Shaft Type: keyway and features a Centering Diameter: 40 mm conforming to DIN 6885 sh. specifications, protected by a Shaft Seal: With shaft seal. Mechanical connectivity uses a Connection Type: Connecting cable with coupling unit on Connection Direction: Side B, and the Shaft End: Standard (without side B shaft end) configuration completes the interface. Absence of a brake is indicated by Holding Brake: Without blocking brake, preserving dynamic response without added drag.
In operation, the MDD025A-N-100-N2K-040PD0 achieves smooth and repeatable motion profiles under varying load conditions. The resolver feedback and absolute encoder combination ensure closed-loop position accuracy and minimal latency in control loops. Standard balancing reduces vibration at high speeds, promoting longevity and reduced maintenance intervals. The standard housing and shaft seal provide environmental resilience, preventing ingress of dust and contaminants. With a compact form factor and integrated feedback, this servo motor maintains stable thermal performance and efficient heat dissipation during continuous operation.
System integration is simplified through compatibility with Bosch Rexroth Indramat digital drive controllers, enabling advanced automation functions such as auto-tuning and predictive diagnostics. The MDD025A-N-100-N2K-040PD0’s standardized electrical and mechanical interfaces reduce engineering design overhead and streamline commissioning. Target applications include CNC machinery, packaging lines, robotics, and any precision indexing systems requiring high-speed performance and sub-micron positioning accuracy. The robust design and modular nature of this motor make it well suited for both retrofit projects and new machine builds in demanding industrial environments.
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
With shaft seal
Shaft Type
keyway
Connection Direction
Side B
Connection Type
Connecting cable with coupling unit
Product Type
Motor for digital drive controllers
Shaft End
Standard (without side B shaft end)
Frequently Asked Questions
What does “continuous torque at standstill = 0.33 Nm” mean for how this motor handles load during zero speed conditions?
It means the motor can hold a load generating up to ~0.33 Nm torque without rotating (without overheating) indefinitely in its rated environment. If the load demands more torque or longer holding than that, either a brake or over-dimensioning is necessary.
How does omitting a blocking (holding) brake impact safety and operational design?
Without a blocking brake, the motor cannot mechanically prevent motion under power loss or during standstill on inclined axes, so external brakes or mechanical failsafes may be required in safety-critical systems. Also, soft stops or control logic must ensure the motor does not drift when disabled.
In B2B automation or robotics applications, how does the low inertia of this motor influence dynamic response?
Low inertia (due to small size and light rotor) allows for faster acceleration/deceleration and better responsiveness in position-control loops, improving cycle time. However, low inertia also makes the system more sensitive to external disturbances or load variations, requiring more precise control tuning.
How does the presence of both resolver feedback and integrated absolute encoder affect the motor’s behaviour on power-up and during loss of position?
The absolute encoder retains shaft position after power loss, so upon restart the controller can resume from the correct position without doing a full homing cycle. This reduces downtime and mechanical stress caused by incremental moves or reference runs.
For the Bosch Rexroth MDD025A-N-100-N2K-040PD0, what are the implications of the “keyway shaft” type in coupling to downstream components?
A keyway provides positive torque transfer, which is good for heavy or dynamic load applications, but it can introduce stress‐concentrations at the key and shaft edges, especially at high RPM. Alignment of couplings, proper fabrication of key seats, and avoiding backlash in mating parts are important to minimize wear, vibration, or failure.
Common Misspellings
MDD-025A-N-100-N2K-040PD0
MDD025A N 100 N2K 040PD0
MDD025A-N-100-N2K-040-PD0
MDD025A-N-100-N2K-040-PDO
MDD025A-N-100-N2K-040PDO
MDD025AN100N2K040PD0
MDD25A-N-100-N2K-040PD0
MDDO25A-N-100-N2K-040PD0
MDDO25A-N-1OO-N2K-O4OPDO
mdd025a-n-100-n2k-040pd0
MDD025AN100N2K040PD0
MDD025A N 100 N2K 040PD0
Internal Product Review
The Bosch Rexroth Indramat MDD025A-N-100-N2K-040PD0 digital AC servo motor offers 0.33 Nm continuous torque and operates at 10,000 RPM. It features resolver feedback, an integrated absolute encoder, and a standard shaft with keyway for accurate motion control. This motor is suitable for CNC machinery, robotics, and packaging automation systems.
Shipping & Payment Options
Warranty
Repair
We offer a repair service for the MDD025A-N-100-N2K-040PD0.
Want to 
