R911253305 (MDD115D-F-020-N2L-180PA2)

MDD Synchronous Motors

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The Bosch Rexroth AC servo motor, MPN R911253305 (MDD115D-F-020-N2L-180PA2), is designed for use in weatherproof environments and operates within a temperature range of 0 to +45 °C, with installation permitted up to 1,000 meters altitude. It features an N balance class, keyway output shaft with shaft seal, and a 3.5 kg holding brake delivering 60.0 Nm torque, clamping delay of 30 ms, and release delay of 150 ms. The motor provides 57 Nm continuous torque at standstill, maximum torque of 177.2 Nm, and a nominal speed of 2000 min⁻¹. The unit includes digital servo feedback for rotor detection, a centering diameter of 180 mm, A-side connector, standard housing design, and complies with IP65 protection.

Technical Specifications

Balance Class
N

Output Shaft
With keyways and sealing ring

Lubrication Protection
Top

Transport Temperature Range
-20 to +80 degrees Celsius

Storage Temperature Range
-20 to +80 degrees Celsius

Operating Conditions
Weatherproof and 0 to +45 degrees Celsius

Positioning
Up to 1000 meters above sea level

Motor protection standard
IP65

Weight
Low

Required Accessory
Driving controller

Power connection
A-side

Holding brake
3.5 kilograms

Clamping delay
30 milliseconds

Release delay
150 milliseconds

Continuous torque
57 Nm

Standstill current
Modest

Maximum torque
177.2 Nm

Maximum speed
2000 RPM

Bearing
Lubricated

Feedback mechanism
Digital servo feedback

Cooling
Liquid-cooled housing.

Frequently Asked Questions

How does a sealed keyway shaft help reliability on MDD115D-F-020-N2L-180PA2 in particulate-rich environments?

The seal limits ingress along the shaft for protecting front bearings and encoder air-gap from dust and coolant mist. Its keyed interface ensures backlash-free torque transmission with standard pulleys/couplings for simplifying field replacement.

What does the “D” length code imply for thermal behavior and continuous torque on MDD115D-F-020-N2L-180PA2?

It indicates a longer active stack within size 115 for providing surface area and thermal mass to sustain the specified 57 Nm at standstill. Its geometry supports both natural and surface-cooled duty configurations in the MDD family.

How does the 2000 min⁻¹ nominal speed of MDD115D-F-020-N2L-180PA2 map to gearbox selection and servo bandwidth?

It simplifies ratio choices for feed axes that balances motor inertia and reflected load. It allows adequate electrical bandwidth while avoiding excessive gear heating at common reduction ratios.

In mixed fleets, how does MDD115D-F-020-N2L-180PA2 integrate with Rexroth digital drive controllers?

The MDD motors are expressly designed as “motors for digital drive controllers” for enabling parameter templates, standardized commutation and diagnostics across DDC/DDS ecosystems. It shortens commissioning and supports predictive maintenance via consistent feedback data.

What duty profiles best exploit the 57 Nm continuous torque of MDD115D-F-020-N2L-180PA2 without thermal derating?

The interpolated moves with moderate dwell, tension-controlled webs and pick-and-place cycles with balanced accel/decel leverage its continuous torque and thermal time constant. For aggressive cycles, consider additional surface cooling per MDD planning guidance.

Common Misspellings

Internal Product Review

Bosch Rexroth designs the motor MDD115D-F-020-N2L-180PA2 that combines a 180 mm centering fit, keyed shaft with seal and DSF encoder. It delivers 57 Nm torque at standstill and operates at an angular speed of 2000 min⁻¹. This motor includes a 60 Nm blocking brake for safe operations that makes it ideal for packaging, printing, machine-tool axes, robotics and handling lines.

1620 Old Apex Road
Cary, NC 27513, USA

Toll Free: 1-888-551-3082
International: 1-919-443-0207

Fax: 1-919-867-6204

[email protected]

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Indramat USA 1 Year Warranty

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North Carolina Office

Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

Phone

Toll Free: 1-888-551-3082
International: 1-919-443-0207

Indramat USA sells factory new and pre-owned surplus products and maintains channels to procure supply. Indramat USA is not affiliated with nor an authorized distributor or representative of any manufacturers, brands or products listed. Designated trademarks, brand names, and brands appearing herein are the property of their respective owners.