MDD025A-N-100-N2G-040FL0
MDD Synchronous Motors
The MDD025A-N-100-N2G-040FL0 is a high-performance digital AC servo motor from Bosch Rexroth Indramat in the MDD Synchronous Motors series, engineered for precision motion control in demanding industrial environments. This compact unit features a Motor Length Code A design for minimized axial footprint and a Centering Diameter of 40 mm to ensure compatibility with standard mounting interfaces. Without a Holding Brake, the motor offers reduced inertia for faster acceleration and deceleration, while the Motor Size 025 provides an ideal balance between torque output and compactness. Manufactured with a rugged Standard housing, the motor is optimized for reliable operation under continuous duty cycles.
Offering a Nominal Speed of 10000 min⁻¹ and a Continuous Torque at Standstill of 0.33 Nm, this servo motor delivers consistent performance across a wide speed range. The internal Resolver feedback system provides accurate commutation, rotor position, and speed control, enabling high-resolution positioning and smooth dynamic response. Designed with Standard balancing, mechanical vibrations are minimized to extend bearing life and enhance operational stability. The motor’s Standard (without side B shaft end) configuration and Plain shaft arrangement simplify coupling to gearboxes or direct-drive applications.
Operational features of the MDD025A-N-100-N2G-040FL0 include a Without shaft seal design for applications where external sealing is managed by the system, reducing maintenance complexity. The Connection Direction Left and dedicated Connector interface support straightforward electrical integration, ensuring reliable power and feedback signal transmission. As a Motor for digital drive controllers, it seamlessly integrates with Bosch Rexroth Indramat drives to enable advanced features such as electronic nameplate reading and adaptive tuning. Its low moment of inertia and absence of mechanical brakes facilitate rapid stop-start cycles, improving throughput in high-speed automation tasks.
Designed for easy integration into modular automation systems, the MDD series motor interfaces directly with Indramat digital drives, offering plug-and-play setup and parameterization. Its combination of high nominal speed, precise resolver feedback, and compact dimensions makes it suitable for robotics, packaging machinery, conveyor systems, and assembly lines. Engineers will appreciate the simplicity of the connector-based power and signal termination, which reduces cabinet wiring time and potential error points. The MDD025A-N-100-N2G-040FL0 stands out as a versatile solution for engineers seeking reliable, high-dynamics performance in a streamlined package.
Technical Specifications
Balancing
Standard
Holding Brake
Without blocking brake
Centering Diameter
40 mm
Housing
Standard
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
Plain shaft
Connection Direction
Left
Connection Type
Connector
Product Type
Motor for digital drive controllers
Shaft End
Standard (without side B shaft end)
Frequently Asked Questions
How does the nominal speed of 10 000 min⁻¹ affect heat dissipation and bearing life?
At 10 000 rpm, friction and windage losses rise sharply, increasing heat generation; proper thermal management (cooling, ventilation) is needed to avoid overheating. High speed also increases dynamic loads on bearings, so high-quality bearings and careful lubrication are required for long life.
What are the dynamic performance trade-offs from using a “plain shaft” and “standard housing” without brake or shaft seal?
A plain shaft reduces cost and simplifies coupling, but may limit torque transfer methods (may need keyway or shrink fit) and offer less protection from contamination without seals. The absence of a brake or seal gives lower inertia and faster response but reduced environmental protection and no passive load holding.
In what ways does the product code “MDD025A-N-100-N2G-040FL0” reflect its manufacturer Bosch Rexroth Indramat, and can that help in sourcing spares or ensuring compatibility?
The “MDD025A-N-100-N2G-040FL0” code is specific to Bosch Rexroth’s MDD series, encoding frame size (025), nominal speed (100), centering diameter (040), feedback type (resolver/variant “N2G”), etc., which ensures correct mechanical, feedback, and mounting match when obtaining spares or replacement motors. Engineers can use this code to verify that replacement motors or parts such as connectors, feedback units, housings, and shaft ends are dimensionally and electrically compatible.
What does “standard balancing” mean in terms of vibration at high speed?
Standard balancing ensures that the rotor is balanced within manufacturer-specified limits, sufficient for typical speeds and duty, but not necessarily optimized for ultra-high speed or minimal vibration applications. If extremely low vibration is needed (e.g. in spindle-like or precision optical systems), a higher grade balancing may be required.
How does the lack of a shaft seal influence motor reliability in dirty or humid environments?
Without a shaft seal, contaminants like dust, moisture or oil can more easily enter the shaft opening, potentially reducing bearing life or degrading feedback components. In such environments extra protection—boots, enclosures, or sealing around the interface—may be needed.
Common Misspellings
MDD-025A-N-100-N2G-040FL0
MDD025A N 100 N2G 040FL0
MDD025A-N-100-N2G-040-FL0
MDD025A-N-100-N2G-040-FLO
MDD025A-N-100-N2G-040FLO
MDD025AN100N2G040FL0
MDD25A-N-100-N2G-040FL0
MDDO25A-N-100-N2G-040FL0
MDDO25A-N-1OO-N2G-O4OFLO
Internal Product Review
The MDD025A-N-100-N2G-040FL0 by Bosch Rexroth Indramat is a digital AC servo motor with a nominal speed of 10000 min⁻¹ and 0.33 Nm continuous torque at standstill. It features a resolver feedback system, plain shaft, and no holding brake, enabling accurate positioning and fast acceleration. This motor is used in robotics, packaging machines, and assembly automation.
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