MDD090A-N-020-N2M-130PR2

MDD Synchronous Motors

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The MDD090A-N-020-N2M-130PR2 is a size 090 synchronous motor with a 130 mm centering diameter. Made by Bosch Rexroth Indramat in the MDD Synchronous Motors series, it has an integrated absolute encoder and digital servo feedback. It offers 3.7 Nm standstill torque, an 11 Nm blocking brake, plus standard housing and shaft seal.

Technical Specifications

Balancing
Standard

Holding Brake
With blocking brake

Holding Brake Torque
11.0 Nm

Centering Diameter
130 mm

Housing
Standard

Encoder
Integrated multiturn absolute encoder

Motor feedback
Digital servo feedback (DSF)

Continuous Torque at Standstill
3.7 Nm

Motor Length Code
A

Motor Size
090

Nominal Speed
2000 min⁻¹

Shaft Seal
With shaft seal

Shaft Type
keyway

Connection Direction
Right

Connection Type
Connector

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Frequently Asked Questions

For applications requiring higher peak torque, what are the practical upgrade paths with this motor family?

Increase peak torque using a matched drive with higher current capacity, select a longer motor length code within the same frame, or add a geared reducer — each option trades speed, inertia, or complexity, so recalc thermal and control limits.

How does the “standard” balancing class affect high-speed or precision contouring applications?

Standard balance is adequate for most precision motion up to nominal speeds, but for very low vibration requirements or high rotational speeds consider specifying a higher balance grade to reduce bearing loads and improve encoder signal integrity.

What B2B system-level benefits does choosing an MDD-series motor (like this one) bring to robotics, CNC, or packaging lines?

The integrated absolute encoder, DSF, and standardized flange/shaft options simplify PLC/drive integration, reduce cabling and setup time, and enable faster replacement/servicing in multi-axis plants; this lowers mean time to repair and speeds up robot/cycle commissioning.

How does the 130 mm centering diameter influence mechanical integration and coupling choices?

A Ø130 mm centering diameter supports higher stiffness flanges and easier alignment for direct pinion or flange-mount couplings, which reduces torsional compliance in precision machines.

What installation considerations arise from the motor’s keyway shaft and standard shaft seal?

The keyway is suited for positive-drive couplings (pinions, timing pulleys) but requires correct key fit and axial retention to avoid fretting; the shaft seal reduces ingress risk at the output but still requires appropriate IP/ambient considerations in washdown or dusty environments.

Common Misspellings

Internal Product Review

The MDD090A-N-020-N2M-130PR2 motor from Bosch Rexroth includes a blocking brake with 11.0 Nm holding torque and delivers 3.7 Nm continuous torque at standstill. It features a keyway shaft, 130 mm centering diameter, and a multiturn absolute encoder with digital servo feedback. This motor is commonly used in robotics, CNC equipment, and automated packaging systems.