R911293552 (MHD071B-061-NP2-UN)
MHD Synchronous Motors
Technical Specifications
Use
Industrial Applications
Motor Frame Size
71
Motor Frame Length
B
Servo Feedback
Digital
Motor Shaft Keyway
DIN 6885-1
Power Connector
270 Degrees Turnable
Holding Brake
6.5 Nm
Cooling Method
Natural Convection/Surface
Characteristic Motor Speed
4500 RPM
Peak Current Rating
50.5 Amps
Torque Constant at 20C
0.77 Nm/A
Voltage Constant
70.0 Volts/1000 RPM
Winding Resistance at 20C
1.45 Ohms
Winding Inductivity
7.2 mH
Rotor Moment of Inertia
8.7 x 10-4 kg m2
Theoretical Maximum Torque
32 Nm
Maximum Speed
6000 RPM
Motor Mass
8.8 Kilograms
Ambient Temperature Range for Storage
-20 to 80 Degrees Celsius
Ambient Temperature Range for Operation
0 to 40 Degrees Celsius
Installation Height
Up to 1000 Meters Above Sea Level.
Frequently Asked Questions
What are the implications of the 95 mm centering diameter for mechanical integration?
A 95 mm centering diameter aligns the motor precisely with the driven component, minimizing runout. This improves concentricity and reduces vibration in high-speed applications.
Why is a keyed shaft design used in the MHD071B-061-NP2-UN motor?
The keyed shaft transmits torque without slippage, ensuring mechanical reliability in cyclic or reversing loads. It's especially beneficial where backlash-free coupling is required.
How does the relative position detection via digital servo feedback influence control accuracy?
Relative feedback tracks motion changes precisely but needs homing on startup. It's ideal for applications where absolute positioning isn’t critical but high repeatability is.
Can the motor’s connectors being turnable within 270° ease installation in tight spaces?
Yes, adjustable power and feedback connectors allow flexible routing and reduce cable strain. This is useful when mounting the motor in confined or irregular orientations.
What maintenance considerations arise from the use of a liquid-cooled housing?
A closed-loop cooling system must be leak-free and regularly inspected for flow and temperature. Poor cooling can lead to performance degradation or thermal faults.
Common Misspellings
MHD 071B 061 NP2 UN
MHD 071B-061-NP2-UN
MHD-071B-061-NP2-UN
MHD071B061NP2UN
MHD07IB-06I-NP2-UN
MHDO71B-O61-NP2-UN
MHD071B 061 NP2 UN
mhd071b-061-np2-un
MHD71B-061-NP2-UN
Internal Product Review
The Bosch Rexroth Indramat MHD071B‑061‑NP2‑UN is a synchronous servo motor with integrated holding brake. It delivers 8.0 Nm continuous torque at standstill, and includes a digital servo feedback encoder with 95 mm centering diameter. Its fully sealed, housing features long‑life lubricated bearings and meets the rugged industrial IP65 design of the MHD series.
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