MKD112C-058-GG3-BN
MKD Synchronous Motors
The Bosch Rexroth Indramat MKD112C-058-GG3-BN servo motor, belonging to the MKD Synchronous Motors series, is engineered to deliver exceptional performance in demanding motion control applications. It features a robust continuous torque at standstill of 38.0 Nm and a reliable holding brake torque of 70 Nm, ensuring precise positioning and secure load-holding capabilities. Equipped with a plain shaft and integrated shaft seal, this servo motor provides smooth, uninterrupted operation even under high loads. Radial cooling combined with an IP65 protection category ensures the motor remains protected against dust and water ingress, enhancing its durability in harsh industrial environments.
In terms of detailed technical specifications, the MKD112C-058-GG3-BN utilizes resolver feedback (RSF) encoder technology for accurate position detection in relative mode. The motor’s winding code is 058, optimized for efficient electrical performance, while the connection direction is designated as Side B for streamlined integration into existing systems. With a rotor inertia of 0.019 kgm^2, this motor achieves quick acceleration and deceleration profiles, supporting dynamic applications. The motor size of 112 and centering diameter of 130 mm facilitate straightforward mechanical mounting, and its three-phase design ensures seamless power delivery.
Additional design features include compatibility with standard MKD mounting interfaces and a total weight of 23.4 kg, balancing structural robustness with manageable mass. The absence of other custom designs simplifies maintenance, and full compliance with IP65 requirements underscores its resistance to contaminants and moisture. By utilizing radial cooling, the MKD112C-058-GG3-BN maintains optimal operating temperatures without the complexity of liquid or fan-based systems. In industrial settings, this servo motor excels in high-precision automation, robotic actuation, and material handling, offering users enhanced reliability, longevity, and energy efficiency throughout the production lifecycle.
Technical Specifications
Shaft Design
Plain shaft
Shaft Seal
Yes
Holding Brake
With holding brake
Holding Brake Torque
70 Nm
Other Designs
None
Encoder Type
Resolver feedback (RSF)
Position Detection
Relative
Continuous Torque at Standstill
38.0 Nm
Motor Length
C
Centering diameter
130 mm
Motor Size
112
Connection Direction
Side B
Product type
Servo Motor
Winding Code
058
Cooling Method
Radial Cooling
Protection Category
IP65
Weight
23.4 kg
Number Of Phases
3
Rotor Inertia
0.019 kgm^2
Frequently Asked Questions
What is the effect of the 0.019 kg·m² rotor inertia on servo tuning, jerk-limited profiles, and disturbance rejection when MKD112C-058-GG3-BN is paired with a modern 3-phase digital drive?
Its moderate inertia damps torsional resonances yet allows swift acceleration to improve command tracking without exciting structural modes. It S-curve motion and peak torque utilization rises while bounded jerk reduces stress and settling.
Why is radial cooling on MKD112C-058-GG3-BN advantageous compared with liquid or forced-air schemes for IP65 installations, and what thermal behavior occurs at sustained RMS torque?
The radial conduction through the stator housing preserves the sealed envelope and removes auxiliary fans to eliminate ingress paths and service points. Its predictable thermal constants enable conservative torque derating under limited airflow.
How does the integrated 70 Nm holding brake in MKD112C-058-GG3-BN influence vertical-axis safety, static stiffness, and restart repeatability after e-stop or power-loss events?
The normally-closed 70 Nm brake sustains load when torque production ceases to prevent back-driving on Z-axes and hoists. Its torque margin supports consistent clamp-release behavior to enable precise re-indexing and prevent position drift.
How should a plain shaft with integral seal on MKD112C-058-GG3-BN be coupled to minimize micro-slip and bearing preload under bidirectional torque reversals?
The backlash-free clamping hub or shrink-disc with proper surface finish and runout control. It maintains axial float per coupling datasheet to avoid transmitting thermal growth or misalignment into radial bearings.
What mounting and alignment considerations follow from the 130 mm centering diameter and MKD interface when adapting MKD112C-058-GG3-BN to gearheads or belt transmissions?
The employment of 130 mm pilot is to control concentricity that let bolts provide retention, not centering.
Common Misspellings
MKD 112C-058-GG3-BN
MKD-112C-058-GG3-BN
MKD112C-O58-GG3-BN
MKD112C058GG3BN
MKD112C 058 GG3 BN
mkd112c-058-gg3-bn
Internal Product Review
The Bosch Rexroth Indramat’s MKD112C-058-GG3-BN servo motor is built to offer 38 Nm standstill torque. It has a built-in 70 Nm brake system and it relies on on RSF resolver feedback. This unit possess an IP65 housing and side-B power orientation. It has a sealed plain shaft and uses radial cooling to manage temperature. Its inertia value is specified as 0.019 kg·m² to support agile profiles in packaging, printing and food handling.
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