MDD115D-N-020-N2L-130GB1

MDD Synchronous Motors

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The MDD115D-N-020-N2L-130GB1 from Bosch Rexroth Indramat features a motor size of 115 and a nominal speed of 2000 min⁻¹. Part of the MDD Synchronous Motors series, it offers digital servo feedback, side B connector direction, and includes a holding brake with 45.0 Nm torque.

It delivers a maximum torque of 177.2 Nm, consumes a peak current of 346.5 A, and provides a continuous standstill torque of 57.0 Nm. Weighing 60 kg, it operates with a thermal time constant of 90 min.

Technical Specifications

Balancing
Standard

Holding Brake
With blocking brake

Holding Brake Torque
45.0 Nm

Centering Diameter
130 mm

Housing
Standard

Motor Feedback
Digital servo feedback (DSF)

Continuous Torque at Standstill
57.0 Nm

Motor Length Code
D

Motor Size
115

Nominal Speed
2000 min⁻¹

Shaft Seal
With shaft seal

Shaft Type
Plain shaft

Connection Direction
Side B

Connection Type
Connector

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Frequently Asked Questions

How is the 45.0 Nm holding brake on MDD115D-N-020-N2L-130GB1 used in vertical axes or safety stops?

The brake maintains axis position when drives are disabled for preventing gravity-induced drift on Z-axes and enabling secure maintenance states. It’s specified for static holding not dynamic braking during emergency deceleration.

How does the continuous standstill torque of 57.0 Nm on MDD115D-N-020-N2L-130GB1 affect low-speed contouring?

It permits sustained force at zero/near-zero speed for holding, tensioning or creep feeds without overheating within thermal limits. It is crucial for grinding, forming or precision dwell operations requiring steady torque at minimal speed.

What is the role of the 130 mm centering diameter in MDD115D-N-020-N2L-130GB1 mechanical integration?

The pilot registers the motor concentrically to the gearbox or machine plate for minimizing runout and coupling misalignment. Its standardized centering simplifies drop-in replacement within MDD 115-frame installations across diverse machines.

How should cabling be routed for the side-B connector orientation on MDD115D-N-020-N2L-130GB1?

The side-B orientation facilitates rear/axial cable exits in compact enclosures for reducing bend stress. It is important to use Rexroth-specified feedback/power cables to maintain signal integrity for DSF encoders and comply with approved motor–drive combinations.

For MDD115D-N-020-N2L-130GB1, what are the implications of a 90-minute thermal time constant during duty-cycle planning?

Its long thermal constant means temperature rises slowly, while transient overloads (e.g., to 177.2 Nm) are thermally buffered. Its duty cycles should still honor steady-state limits and cooling assumptions to avoid cumulative heating.

Common Misspellings

Internal Product Review

The Bosch Rexroth Indramat’s MDD115D-N-020-N2L-130GB1 servo motor features DSF feedback, a 45 Nm holding brake and a 130 mm pilot for precise integration. It offers 2000 rpm of nominal speed and its rated standstill torque is 57 Nm, while its peak torque value is specified as 177.2 Nm. It serves in machine tools, packaging, textiles and robotics applications.