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R911291851 (MKD025B-144-GG1-UN)

MKD Synchronous Motors

Rated 4.3 stars (14 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
The R911291851 (MKD025B-144-GG1-UN) is an MKD series synchronous servo motor from Bosch Rexroth engineered for integration with Rexroth drive controllers. It features a plain shaft with a sealing ring, resolver feedback for relative position detection, and a 1 Nm holding brake. The unit has a continuous torque at standstill of 0.9 Nm, a rated speed of 5000 rpm, peak torque of 3.0 Nm, and a voltage constant of 23.5 mV/rpm. The motor weighs 2.1 kg and is housed in an IP65-rated enclosure with a 40 mm centering diameter. The terminal box connector can be rotated within a 270-degree range, supporting flexible installation. Optimal operating temperatures range from 0°C to 40°C, with storage and transport between -20°C and 80°C recommended.

Technical Specifications

Product Type
Synchronous Motor

Protection Category
IP65

Insulation Class
F

Color
Black

Weight
2.0Kg

Maximum Speed
9000rpm

Certification
CE, UL

Ambient Operating Temperature
0 to 40 degrees

Storage and Transport Temperature
-20 to 80 degrees

Maximum Installation Height
1000 meters above sea level

Rated Torque
0.31Nm

Rated Frequency
250Hz

Rated Voltage
94.7V

Rated Speed
5000rpm

Installation Position
Any position

Storage Position
Horizontal

Housing Design
Standard

Holding Brake
1Nm

Shaft Design
Plain with shaft sealing ring

Feedback
Resolver.

How does the holding function operate on MKD025B-144-GG1-UN?

The MKD025B-144-GG1-UN integrates a holding brake rated at 1 Nm. This value secures static loads when power is removed, preventing drift and maintaining positional integrity during maintenance or staged shutdowns in automated assemblies.

How is low-speed load stability handled by MKD025B-144-GG1-UN?

The MKD025B-144-GG1-UN supplies 0.9 Nm continuous torque at standstill. This capability preserves holding force at zero speed, sustaining positional consistency for indexing, clamping or dwell phases without auxiliary restraints.

What does the electrical constant indicate on MKD025B-144-GG1-UN?

The MKD025B-144-GG1-UN specifies a torque constant of 0.32 Nm/A. This relationship matches current input to output torque, enabling predictable tuning and consistent closed-loop response across changing mechanical loads.

How is peak rotational capability defined on MKD025B-144-GG1-UN?

The MKD025B-144-GG1-UN achieves a maximum speed of 4500 RPM. This margin supports faster cycle times where brief accelerations and higher throughput are necessary, while allowing conservative derating in continuous processes.

What operating temperature window suits MKD025B-144-GG1-UN?

Natural convection cooling manages thermal load without fans. This approach simplifies maintenance, lowers acoustic output, and sustains continuous cycles without reliance on external airflow.

MKD 025B-144-GG1-UN

MKD-025B-144-GG1-UN

MKD025B144GG1UN

MKDO25B-144-GG1-UN

MKD025B 144 GG1 UN

mkd025b-144-gg1-un

MKD25B-144-GG1-UN

Internal Product Review

Model number MKD025B-144-GG1-UN consistently delivers precise motion while maintaining long service intervals. The model simply further enhances adaptability in constrained layouts by allowing a turnable connection angle and also thereby simplifying routing and cabinet design decisions.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the MKD025B-144-GG1-UN.
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