MDD090A-N-030-N2L-110GA1

MDD Synchronous Motors

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The MDD090A-N-030-N2L-110GA1 synchronous motor has a nominal speed of 3000 min−1, a continuous torque at standstill of 3.7 Nm and a holding brake torque of 6.5 Nm. Part of the MDD Synchronous Motors series manufactured by Bosch Rexroth Indramat, it features digital servo feedback and a standard shaft seal.

Technical Specifications

Balancing
Standard

Holding Brake
With blocking brake

Holding Brake Torque
6.5 Nm

Centering Diameter
110 mm

Housing
Standard

Motor Feedback
Digital servo feedback (DSF)

Continuous Torque at Standstill
3.7 Nm

Motor Length Code
A

Motor Size
090

Nominal Speed
3000 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 does the holding brake torque of 6.5 Nm add to system safety and design?

A holding brake of 6.5 Nm ensures the shaft is physically locked when power is removed or during emergency stops, useful in vertical or inclined axes to prevent drift. But braking force must exceed the load torque plus safety margin, and the brake must be mounted & aligned properly for reliable holding.

What is the practical impact of using this motor in CNC versus packaging machinery?

In CNC, precise position control, minimal backlash, and fast accelerations are required—this motor’s DSF feedback + brake support that. In packaging machines, cycles are faster but loads lighter and operations often more repetitive; the brake helps for safety, seal helps with wash-down, but over-spec’ing feedback or speed may increase cost unnecessarily.

How does the continuous torque at standstill translate to continuous torque at speed, and what limits it?

At speed, continuous torque is lower than at standstill because of thermal limits (copper losses in windings, core losses, cooling). Also as rpm rises, inertia and friction reduce usable torque; the drive must maintain current limits to avoid overheating.

What are key B2B concerns when integrating these motors into multi-axis systems?

Synchronization, cable harnessing, and feedback signal integrity are critical—shared power rails and interference can degrade DSF performance. Spare parts, serviceability (including brake replacement), and matching thermal drift between axes are also important in high-uptime industrial settings.

What life expectancy and reliability factors come from the “standard balancing” and “standard” housing?

Standard balancing reduces vibration at the rotational speeds, lowering bearing fatigue and mechanical resonance, thus improving lifespan. The “standard” housing implies typical protection levels (less specialized protection against extreme environments), so for corrosive or high-moisture conditions, more robust housing or protective enclosures may be needed.

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Internal Product Review

The Bosch Rexroth MDD090A-N-030-N2L-110GA1 servo motor delivers 3.7 Nm continuous torque at 3000 min⁻¹ and includes digital servo feedback and a blocking brake with 6.5 Nm holding torque. It features a plain shaft, shaft seal, and 110 mm centering diameter with side A connector orientation. This motor is ideal for use in packaging machines, CNC systems, and industrial robotics.