MSK101D-0300-FN-S2-LG2-RNNN
MSK IndraDyn S Synchronous Motors
The MSK101D-0300-FN-S2-LG2-RNNN from Bosch Rexroth Indramat features liquid cooling and a plain shaft. Part of the MSK IndraDyn S Synchronous Motors, it offers a left-side power connector and employs optical encoder technology. This servomotor includes a singleturn encoder and delivers a maximum torque of 160.0 Nm. It uses an EnDat2.1 interface and 2048 signal periods for precise feedback. It has a brake providing 70 Nm torque. Needs Cooling FN constraint.
Technical Specifications
Cooling
Liquid cooling
Power Connector
Left-Side
Encoder Technology
Optical
Encoder Turn Type
Singleturn
Encoder Interface
EnDat2.1
Encoder Resolution
2048 signal periods
Motor Length
D
Motor Size
101
Holding Brake
With holding brake, electrically-released
Holding Brake Torque
70 Nm
Constraint
Requires Cooling FN
Design
Increased concentricity
Product Type
IndraDyn S Synchronous Servomotor
Shaft Type
Plain shaft
Rated Speed Code
0300
Continuous Current at Standstill 100 K
34.9 A
Continuous Torque at Standstill 100 K
57.0 Nm
Maximum Current
137.7 A
Maximum Torque
160.0 Nm
Winding Inductivity
3,200 mH
Frequently Asked Questions
How should the holding brake be integrated in a CNC axis when power fails?
The electrically released brake supplies 70 Nm holding torque, so you must command it to engage before drive power is removed and accommodate its disconnection delay (milliseconds) to prevent unwanted motion. Also, ensure the brake’s inertia and torque are included in the control model.
What positional accuracy can you expect from the singleturn EnDat 2.1 encoder with 2048 signal periods?
You get ≈ 0.18° resolution (360°/2048) per revolution, but absolute accuracy depends on encoder interpolation, system latency, and mechanical play—so real-world repeatability is typically tighter than raw counts.
What fluid properties and circuit limits must be respected in the coolant loop?
The motor datasheet mandates coolant pH 6–8, maximum inlet pressure ~3.0 bar, and dew point margin (coolant temperature must be ~5 °C below ambient to avoid condensation)
How does the plain shaft design influence coupling and alignment choices?
The plain shaft requires a suitable coupling (e.g. flexible, jaw, or bellows type) and precise alignment to minimize runout or bearing loads; misalignment adds parasitic torque and reduces system stiffness. Also consider thermal expansion compensation.
What limitation does the maximum current (137.7 A) place on drive sizing for transient loads?
The drive must deliver high peak current during acceleration without voltage collapse or converter DC bus drops; choose a servo amplifier and power supply that can reliably deliver 137.7 A pulses plus margin for voltage drop and cabling losses.
Common Misspellings
MSK101D0300FNS2LG2RNNN
MSK101D 0300 FN S2 LG2 RNNN
MSK-101D-0300-FN-S2-LG2-RNNN
Internal Product Review
The MSK101D-0300-FN-S2-LG2-RNNN servomotor from Bosch Rexroth is used in CNC machines, robotics, and packaging systems. It includes a 70 Nm electrically released holding brake and delivers 57.0 Nm continuous torque. The motor features liquid cooling and a singleturn optical encoder with 2048 signal periods.
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We offer a repair service for the MSK101D-0300-FN-S2-LG2-RNNN.
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