MDD021A-N-100-N2G-032FA0

MDD Synchronous Motors

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The MDD021A-N-100-N2G-032FA0 synchronous motor has a nominal speed of 10000 min^-1, continuous torque at standstill of 0.15 Nm, resolver feedback, and a side A connector for power connection. Part of MDD Synchronous Motors series by Bosch Rexroth Indramat, it features a 32 mm centering diameter and no blocking brake.

Technical Specifications

Balancing
Standard

Holding Brake
Without blocking brake

Centering Diameter
32 mm

Housing
Standard

Motor Feedback
Resolver feedback

Continuous Torque at Standstill
0.15 Nm

Motor Length Code
A

Motor Size
021

Nominal Speed
10000 min⁻¹

Shaft Seal
Without 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 is the advantage of having resolver feedback in this motor by Bosch Rexroth Indramat (MDD021A-N-100-N2G-032FA0)?

Resolver feedback gives a robust, high-temperature‐ and vibration-tolerant rotor position sensing method, enabling reliable commutation and vector control even under harsh conditions. It avoids optical sensor issues such as dirt, alignment drift, or signal dropouts.

How does the rating of “continuous torque at standstill 0.15 Nm” affect the drive controller’s sizing and thermal management?

That torque at zero speed means the motor draws current even when stationary, so the drive must supply enough current and have good cooling to avoid overheating during prolonged standstill operation. It also implies that thermal limits (winding, core losses) become critical when frequent holds are required in motion profiles.

What impact does “without blocking brake / no holding brake” have in applications requiring stopped-torque?

Without a mechanical holding (blocking) brake, the motor cannot hold load if power is removed; for safety or precision retention during power loss, external brakes or mechanical locking must be provided. Also, in vertical or inclined axes, load drift must be prevented via external means.

What are the implications of “plain shaft without shaft seal” on environmental exposure and maintenance?

No shaft seal means that dust, moisture, or contaminants may reach bearings or internal parts via the shaft end, so usage in dusty, wet, or dirty environments may require additional protection (covers, sealing boots). Maintenance intervals for bearings may need to be shorter, and lubrication must be checked regularly.

How does the motor’s lack of a shaft end on Side B (“standard without side B shaft end”) simplify or constrain coupling options?

If there is no extended shaft end on Side B, then coupling or mounting gearboxes etc must be done on the Plain shaft on one side only, potentially limiting dual-access or through-shaft applications. It simplifies sealing or protection on the unused side but might constrain flexibility in divergent mechanical layouts.

Common Misspellings

Internal Product Review

The MDD021A-N-100-N2G-032FA0 motor is manufactured by Bosch Rexroth Indramat and is designed for digital drive controllers. It offers a nominal speed of 10,000 min⁻¹ and continuous torque of 0.15 Nm at standstill. Ideal for robotics, automation, and CNC applications, it provides reliable operation without a holding brake or shaft seal.