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R911282479 (MHD090B-035-PP1-UN)

MHD Synchronous Motors

Rated 4.3 stars (10 total reviews)
  In-Stock, Ships 3-5 Days
Expedited Lead Times on Select Parts
1 Year Warranty Included
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Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping

Current response time:

3 Minutes 44 Seconds

The R911282479 (MHD090B-035-PP1-UN) is a Bosch Rexroth Indramat synchronous servo motor equipped with liquid-cooled housing for efficient thermal management. It features a 140 mm flange size, 110 mm centering diameter, and a 'B' motor length, delivering 12.0 Nm continuous torque at standstill. The motor supports a keyed shaft with a shaft seal per DIN 6885-1, includes a 22 Nm holding brake for secure positioning when de-energized, and utilizes digital servo feedback with a multiturn absolute encoder for position detection exceeding 4096 revolutions. The power and feedback connectors are turnable within a 270-degree range.

Technical Specifications

Motor Type
MHD Synchronous Motors

Motor Frame Size
140mm Flange Size

Centering Diameter
110mm

Motor Frame Length
12Nm

Winding Code
35

Servo Feedback
Digital

Shaft Sealing
With sealing ring

Keyway
According to DIN 6885-1

Holding Brake Capacity
22Nm

Housing Type
Liquid cooling allowed

Shipping Availability
Global Delivery

Product Type
Industrial Drive&Rigidity Control&Motion Control.

Can the MHD090B-035-PP1-UN be mounted in any orientation?

Yes, but because it uses liquid cooling, the orientation must ensure proper coolant flow and avoid air pockets. Incorrect positioning can impair heat dissipation and reduce motor lifespan.

How does absolute position detection over 4096+ revolutions benefit motion systems?

It eliminates the need for homing routines after power cycles, enabling quicker and more reliable startups. This is especially useful in multi-axis or high-precision environments.

Does the MHD090B-035-PP1-UN support rapid start-stop applications?

Yes, the combination of high holding brake torque and continuous standstill torque makes it suitable for dynamic load holding. It provides consistent torque without overheating during frequent stopping.

What impact does liquid cooling have in continuous-duty applications?

Liquid cooling enables higher continuous torque output without increasing motor size. It also stabilizes internal temperatures, reducing thermal drift in encoder readings.

Can this motor be used in a dusty or humid environment?

Yes, the sealed housing and shaft seal protect internal components from contaminants. However, appropriate coolant system maintenance is crucial to avoid leaks in such environments.

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Internal Product Review

The MHD090B‑035‑PP1‑UN is a synchronous servo motor from Bosch Rexroth Indramat. It includes liquid cooling, an integrated digital encoder with absolute position detection over 4096+ revolutions, and a keyed shaft. Its housing is a liquid-cooled, fully sealed design used in Rexroth’s MHD series.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the MHD090B-035-PP1-UN.
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