R911288028 (MDD115D-N-020-N2L-130GB2)

MDD Synchronous Motors

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The Bosch MPN R911288028 (MDD115D-N-020-N2L-130GB2) is a digital AC servo motor in the MDD series designed for applications requiring high power density and dynamic response. It features a frame size of 115, frame length D, and a nominal speed of 2000 RPM. The motor delivers a continuous torque of 57 Nm at standstill and a maximum torque of 177.2 Nm, with a rotor inertia of 0.00271 kg·m². Equipped with natural convection or surface cooling, it includes a 60 Nm blocking brake, plain shaft with seal, and digital servo feedback. Specifications include a centering diameter of 130 mm, 0.74 Nm/A torque constant, 90-minute thermal time constant, standard balancing and housing, a connector on side B, and no shaft end on side B.

Technical Specifications

Type
Digital AC Servo Motor

Suited Applications
Dynamic Applications

Available Torque Ratings
28 to 57 Nm

Motor Speeds
1500 to 3000 RPM

Frame Size
115

Frame Length
D

Cooling Method
Natural Convection/Surface Cooling

Nominal Speed
2000 RPM

Continuous Torque at Standstill
57 Nm

Continuous Current at Standstill
77 Amps

Maximum Theoretical Torque
177.2 Nm

Rotor Moment of Inertia
0.00271 kg m2

Torque Constant at 20C
0.74 Nm/A

Winding Resistance at 20C
0.06 Ohms

Winding Inductance
1 millihenry

Motor Thermal Time Constant
90 minutes

Shipping Weight
60 kilograms

Blocking Brake Holding Torque
60 Nm

Blocking Brake Weight
3.5 kilograms

Blocking Brake Voltage Rating
24 volts DC

Blocking Brake Nominal Current
1.5 Amps

Clamping Delay
30 milliseconds

Release Delay
150 milliseconds

Shaft Type
Plain

Servo Feedback Type
Digital

Power Connection Direction
Side B

Centering Diameter
130 millimeters

Frequently Asked Questions

What role does the 60 Nm blocking brake play on MDD115D-N-020-N2L-130GB2 during power-off states?

The integrated brake mechanically holds the axis to prevent drift or back-drive when power is removed for preserving registration. It’s vital for vertical axes or web handling where product alignment and safety interlocks must be maintained.

How does the digital servo feedback (DSF) in MDD115D-N-020-N2L-130GB2 improve closed-loop accuracy?

The DSF continually reports rotor position/velocity to the controller for enabling tight position and speed regulation with low following error. It yields smooth trajectory execution in packaging and print lines while maintaining stable torque at low speeds.

How does the 57 Nm continuous standstill torque on MDD115D-N-020-N2L-130GB2 affect sizing?

It allows the axis to hold substantial load without overheating while stationary, important for dwell-heavy cycles. Its engineers can choose smaller gear reductions while still meeting holding/settling requirements on intermittent motion profiles.

What installation benefits come from the Side-B connector orientation on MDD115D-N-020-N2L-130GB2?

The routing cables to Side-B can reduce bend radii conflicts in tight enclosures and segregate power/feedback away from tooling. Sits sandardized connectors also simplify drop-in replacement across MDD115D variants.

Does the MDD115D-N-020-N2L-130GB2 support harsh-environment use, and what precautions apply?

The MDD115D variants are commonly offered with IP65-class housings and corrosion-resistant finishes, it is important to verify exact option codes per unit and maintain shaft seal integrity to preserve enclosure rating.

Common Misspellings

Internal Product Review

Bosch Rexroth produces MDD115D-N-020-N2L-130GB2 synchronous servo motor that integrates digital servo feedback, 130 mm centering and a 57 Nm standstill rating with a 60 Nm brake. It possesses standard housing and a plain sealed shaft design. This motor offers side-B connector for streamlining installation. It is widely used in packaging, printing, and textile automation where precise 2000 min⁻¹ speed motion control in needed.

1620 Old Apex Road
Cary, NC 27513, USA

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

Fax: 1-919-867-6204

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North Carolina Office

Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

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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.