MDD090C-N-020-N2L-110GA2

MDD Synchronous Motors

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The MDD090C-N-020-N2L-110GA2 motor from Bosch Rexroth Indramat is part of the MDD Synchronous Motors series. It features a 110 mm centering diameter, nominal speed of 2000 min⁻¹, continuous standstill torque of 10.4 Nm and a holding brake torque of 11.0 Nm. The motor has 6.8 mH winding inductance, can carry up to 72.9 A and includes a digital servo feedback encoder with ±0.5 angular minute accuracy. Cooling is achieved by natural convection and surface cooling.

Technical Specifications

Balancing
Standard

Holding Brake
With blocking brake

Holding Brake Torque
11.0 Nm

Centering Diameter
110 mm

Housing
Standard

Motor Feedback
Digital servo feedback (DSF)

Continuous Torque at Standstill
10.4 Nm

Motor Length Code
C

Motor Size
090

Nominal Speed
2000 min⁻¹

Shaft Seal
With shaft seal

Shaft Type
Plain shaft

Connection Direction
Side A

Connection Type
Connector

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Frequently Asked Questions

What distinguishes the DSF encoder on the MDD090C-N-020-N2L-110GA2?

Its digital servo feedback provides precise position/speed data with approximately ±0.5 angular-minute accuracy to improve contouring and alignment at low speeds. Its accuracy helps reduce following error in closed-loop control on multi-axis machines and conveyor indexing.

How does the 6.8 mH winding inductance influence drive tuning on MDD090C-N-020-N2L-110GA2?

Its moderate inductance smooths current ripple for simplifying current-loop tuning and aiding stable torque production. It also helps filter high-frequency switching components from the inverter that can lower heating during dynamic moves.

Why is a plain shaft with a shaft seal useful here?

The plain (cylindrical) shaft eases coupling with compliant or rigid hubs and minimizes keyway stress concentrations. Its shaft seal helps retain lubrication and provides ingress resistance at the output end for supporting IP-style protection in dusty packaging or textile environments.

How do natural convection and surface cooling affect continuous operation on MDD090C-N-020-N2L-110GA2?

They remove heat via the housing to allow continuous torque ratings without external fans in many installations. Its surface cooling can be enhanced by mounting to thermally conductive structures for improving thermal time constants during duty-cycle peaks.

How does the peak current capability (up to ~72.9 A) help applications on MDD090C-N-020-N2L-110GA2?

The high permissible current delivers strong peak torque for acceleration to overcome stiction or short bursts of process load. It supports rapid indexing in pick-and-place, punch/shear cycles and fast tool changes without compromising positioning accuracy.

Common Misspellings

Internal Product Review

The MDD090C-N-020-N2L-110GA2 servo motor integrates DSF encoder that provides precision of ±0.5′ and its rated speed is specified as 2000 min⁻¹. It comes with a plain-shaft, with an embedded sealing ring and blocking-brake design suit digital drive controllers. This unit uses natural/surface cooling and its 6.8 mH inductance aid controllability in automation tasks.