R911280471 (MHD090B-035-NP1-UN)
MHD Synchronous Motors
Technical Specifications
Motor Size
090 (140mm Flange Size, 110mm Centering Diameter)
Flame Length
B (12.0 Nm continuous torque at standstill)
Encoder type
Digital Servo Feedback
Shaft connection
Shaft with key per DIN 6885-1
Maximum Speed
5000 RPM
Peak Current Rating
49.5 Amps
Pole Pairs
4
Rated Speed (60K)
3000 RPM
Rated Torque (60K)
7.2 Nm
Rated Current (60K)
4.7 Amps
Rated Power Output (60K)
2.8 kW
Rated Voltage (60K)
354 Volts
Rated Line Frequency (60K)
200 Hz
Rated Speed (100K)
3000 RPM
Rated Torque (100K)
10.2 Nm
Rated Current (100K)
6.7 Amps
Rated Power Output (100K)
4.0 kW
Rated Voltage (100K)
369 Volts
Rated Line Frequency (100K)
200 Hz
Rotor Inertia
43.0 x 10-4 kg m2
Theoretical Maximum Torque
43.5 Nm
Motor Weight
14 Kg
Maximum Installation Altitude
1000 meters
Holding Brake
11 Nm
Cooling System
Surface Cooled
Connector Rotation
270 Degrees
Frequently Asked Questions
How does the 11.0 Nm holding brake torque affect vertical applications?
It securely holds loads in position when the drive is inactive, preventing unwanted motion due to gravity. This is especially critical in Z-axis or lift systems.
What are the integration benefits of the 140 mm flange and 110 mm centering diameter?
These standardized dimensions enable drop-in replacement in IEC-compatible systems. They also simplify alignment during installation and reduce machining requirements.
Why is digital servo feedback (HSF) advantageous for positioning control?
HSF provides high-resolution position data for precise motion control and tighter loop regulation. This improves accuracy and responsiveness in automation tasks.
Can the MHD090B-035-NP1-UN run continuously without external fans?
Yes, the liquid cooling negates the need for external air circulation, even under high-load conditions. This is ideal for sealed or thermally sensitive environments.
What role does the relative position detection play in system reliability?
Relative encoders track movement from a known reference but require homing at startup. They are simpler and more cost-effective but less suitable where absolute position retention is critical.
Common Misspellings
MHD 090B 035 NP1 UN
MHD 090B-035-NP1-UN
MHD-090B-035-NP1-UN
MHD090B-035-NPI-UN
MHD090B035NP1UN
MHDO9OB-O35-NP1-UN
MHD090B 035 NP1 UN
mhd090b-035-np1-un
MHD90B-035-NP1-UN
Internal Product Review
The MHD090B‑035‑NP1‑UN is a synchronous servo motor from Bosch Rexroth Indramat. It delivers 12.0 Nm continuous torque at standstill, 11.0 Nm holding brake torque, includes a keyed shaft with sealing ring, and offers a 270° turnable power connector. Its housing is liquid‑cooled, aiding heat dissipation and thermal control.
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