MHD071B-061-NP1-UN
MHD Synchronous Motors
The Bosch Rexroth Indramat MHD071B-061-NP1-UN from the MHD Synchronous Motors series is a precision-engineered servo motor designed for demanding automation tasks. This MHD071B-061-NP1-UN model features a compact motor size 071 frame with a winding code 061 and a motor length B housing, offering high torque density in a streamlined form factor. Its four number of pole pairs 4 enable a maximum speed of 6000 min-1, and the keyed shaft with a centering diameter of 95 mm ensures accurate rotor alignment under dynamic loads. Weighing just 8.8kg, this motor balances robust performance with manageable mass for high-density installations.
Reliability is central to the MHD071B-061-NP1-UN’s design. Liquid heat dissipation through the housing cooling type liquid cooling system and a thermal time constant of 45min keep winding temperatures stable during extended operation. A continuous torque at standstill of 8.0 Nm provides firm holding capability, augmented by the integrated holding brake delivering holding brake torque of 5.0 Nm for safe stops and position retention. The shaft seal protects internal components from contaminants, while the turnable power connection direction turnable within a range of 270° allows flexible cable routing in tight control cabinets. High-resolution positioning is achieved via the digital servo feedback (HSF) encoder type and a relative type of position detection, ensuring precise synchronization in multi-axis setups.
Commissioning at altitude is simplified by the motor’s ability to operate up to maximum setup height of 1000m above MSL, and the robust shaft design keyed shaft delivers secure torque transmission under rapid acceleration. Whether deployed in packaging machinery, CNC systems, or industrial robotics, the MHD071B-061-NP1-UN delivers consistent, tightly regulated motion control with advanced thermal, mechanical, and electrical safeguards built in.
Technical Specifications
Holding Brake
With holding brake
Holding Brake Torque
5.0 Nm
Housing Cooling Type
Liquid cooling
Encoder Type
Digital servo feedback (HSF)
Type of Position Detection
Relative
Continuous Torque at Standstill
8.0 Nm
Motor Length
B
Motor Size
071
Centering diameter
95 mm
Shaft Design
Keyed Shaft
Shaft Seal
Yes
Power Connection Direction
turnable within a range of 270°
Product Type
Servo Motor
Winding Code
061
Number of Pole Pairs
4
Maximum setup height
1000m above MSL
Maximum Speed
6000 min-1
Weight
8.8kg
Thermal Time constant
45min
Frequently Asked Questions
How does liquid cooling affect the performance of the MHD071B-061-NP1-UN in continuous-duty applications?
Liquid cooling maintains stable winding temperatures, allowing sustained torque output without thermal derating. This is especially beneficial in high-duty cycles or enclosed systems with limited airflow.
How does the holding brake torque impact vertical axis applications?
The 5.0 Nm holding brake ensures secure load retention when power is off. This is essential for vertical axes to prevent mechanical drop or drift.
What effect does the 8.8 kg mass have on mounting and dynamic system behavior?
The moderate weight simplifies handling during installation and reduces inertia in dynamic systems. It also enables tighter integration in lightweight machine designs.
Does the MHD071B-061-NP1-UN support precise homing routines in indexing systems?
Yes, its relative digital encoder supports fine-grained position tracking during motion cycles. For absolute positioning, external referencing at startup is typically required.
Can this motor be deployed above sea level without affecting thermal ratings?
It’s rated for operation up to 1000 meters above mean sea level. Beyond that, cooling efficiency and derating must be calculated due to thinner air density.
Common Misspellings
MHD 071B 061 NP1 UN
MHD 071B-061-NP1-UN
MHD-071B-061-NP1-UN
MHD071B061NP1UN
MHD07IB-06I-NPI-UN
MHDO71B-O61-NP1-UN
MHD071B 061 NP1 UN
mhd071b-061-np1-un
MHD71B-061-NP1-UN
Internal Product Review
The Bosch Rexroth Indramat MHD071B‑061‑NP1‑UN is a liquid‑cooled synchronous servo motor designed for precise automation. Its 4 pole pairs allow speeds up to 6000 min⁻¹, and includes a 5.0 Nm holding brake. This model finds use in CNC machines, packaging lines, robotics, and high‑precision motion systems in industrial automation.
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