MDD021B-N-100-N2K-032FA0

MDD Synchronous Motors

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The MDD021B-N-100-N2K-032FA0 is a motor for digital drive controllers manufactured by Bosch Rexroth Indramat. Part of the MDD Synchronous Motors series, it features resolver feedback and an integrated absolute encoder. With a continuous torque at standstill of 0.30 Nm and nominal speed of 10000 min⁻¹, the size 021 motor has a 32 mm centering diameter, plain shaft and side A connector.

Technical Specifications

Balancing
Standard

Holding Brake
Without blocking brake

Centering Diameter
32 mm

Housing
Standard

Encoder
Integrated absolute encoder

Motor Feedback
Resolver feedback

Continuous Torque at Standstill
0.30 Nm

Motor Length Code
B

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 effect does using “standard balancing” have at high RPMs such as 10,000 min⁻¹?

Standard balancing means that vibration levels are acceptable for many applications but not ultra-high precision; as RPM increases, even small imbalances produce larger vibration and possibly bearing wear. If used in ultra-precision or low-vibration tasks, additional balancing (e.g. high grade or custom balancing) may be warranted.

How does the “side A connector” connection direction affect placement and wiring in tight cabinets?

Having the connector on Side A determines where cable routing must occur; in tight enclosures, you’ll need clearance on that side. It may restrict how close the motor can sit next to walls or other components, impacting installation flexibility.

What does “motor length code B” mean in terms of torque rollout or inertial load response?

Length code B indicates a specific motor body length, which affects rotor inertia: longer motors generally have higher inertia. Higher inertia slows dynamic response (acceleration / deceleration) and increases the load on the drive amplifier during changes in speed.

What is a key practical difference between holding brake vs “without blocking brake” in this motor?

Without a holding (blocking) brake, this motor cannot mechanically lock the shaft when unpowered, so loads may drift when power is off; systems that require safety locking or fail-safe hold will need external brakes. Also, emergency stops may need separate mechanisms.

How is the product code MDD021B-N-100-N2K-032FA0 by Bosch Rexroth helpful in evaluating its compatibility with a drive controller?

The code encodes key attributes (frame size “021”, length code “B”, feedback type “N2K”, centering diameter “032”, etc.), which must match what the drive controller expects for the motor’s feedback signals, thermal limits, and electrical connectors; mismatching any part (e.g. wrong feedback type) can lead to failure or inability to tune properly.

Common Misspellings

Internal Product Review

The MDD021B-N-100-N2K-032FA0 motor by Bosch Rexroth is designed for digital drive controllers and features a nominal speed of 10,000 min⁻¹ with a continuous standstill torque of 0.30 Nm. It includes resolver feedback, a 32 mm centering diameter, and a plain shaft without a shaft seal. This motor is ideal for use in semiconductor equipment, medical devices, and automated packaging systems.