MDD025A-N-100-N2K-040PC0

MDD Synchronous Motors

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6 Minutes 45 Seconds

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The MDD025A-N-100-N2K-040PC0 is made by Bosch Rexroth Indramat. It belongs to the MDD Synchronous Motors series, with an absolute encoder and resolver feedback. The motor offers 0.33 Nm continuous torque at standstill and runs at 10000 min⁻¹. It has a sealed 40 mm keyway shaft and side-A cable connection.

Technical Specifications

Balancing
Standard

Holding Brake
Without blocking brake

Centering Diameter
40 mm

Housing
Standard

Encoder
Integrated absolute encoder

Motor Feedback
Resolver feedback

Continuous Torque at Standstill
0.33 Nm

Motor Length Code
A

Motor Size
025

Nominal Speed
10000 min⁻¹

Shaft Seal
With shaft seal

Shaft Type
keyway

Connection Direction
Side A

Connection Type
Connecting cable with coupling unit

Product Type
Motor for digital drive controllers

Shaft End
Standard (without side B shaft end)

Frequently Asked Questions

How should load inertia be matched for a small-frame, 10,000 min⁻¹ servo like this?

Keep the reflected load inertia near the rotor inertia to maintain control bandwidth; with small-torque servos, belt ratios often provide the needed reduction. The resolver’s absolute capability helps recovery from stops, but poor inertia match will still limit dynamic response.

What does the keyway shaft imply for coupling selection and alignment?

A DIN-6885 keyway shaft favors keyed hubs or pulleys; use interference class and key fit to handle peak torque without fretting. Balance the coupling and pulley to G 2.5 or better for high-speed service to avoid synchronous vibration.

Are there wiring specifics for feedback and thermal protection on MDD motors?

MDD motors use separate power and 12-pin feedback connectors, with the PTC temperature sensor routed via the power connector harness. Follow the crimp/solder guidance for the power plug and ensure feedback cabling and gasket integrity when re-tightening.

For Bosch Rexroth Indramat MDD025A-N-100-N2K-040PC0, what are typical application fits?

Its high base speed with modest continuous torque suits small pick-and-place, electronics handling, and light packaging axes needing quick indexing rather than heavy cutting loads. The resolver-absolute feedback and pilot/keyed-shaft geometry simplify precise, repeatable, and rugged integration.

What should I consider given there’s no holding (blocking) brake?

On vertical or safety-critical axes, specify a mechanical brake on the load or a gearbox brake to hold position when the drive is disabled. The drive can control a brake circuit natively when a brake is present, but this variant requires external holding.

Common Misspellings

Internal Product Review

The MDD025A-N-100-N2K-040PC0 motor from Bosch Rexroth offers resolver feedback, a 40 mm centering diameter, and operates at a nominal speed of 10,000 min⁻¹. It delivers 0.33 Nm continuous torque at standstill and includes a keyway shaft with a shaft seal. This motor is used in industries like robotics, electronics manufacturing, and automated packaging systems.