R911321877 (MSK100A-0300-NN-M2-BP0-RNNN)
MSK IndraDyn S Synchronous Motors
Technical Specifications
Maximum Torque
54 Nm
Maximum Current
45.9 A
Housing Classification
IP65
Maximum Speed
5200 revolutions per minute
Sealing Ring Location
Output Shaft Keyways
Number of Polar Pairs
4
Weight
23 kg
Electrical Connection Location
B Side
Constant Torque at 60 K
15 Nm
Constant Torque at 100 K
17 Nm
Working Temperature Range
0 to +40 degrees Celsius
Insulation Level
155
Discharge Capacity
4.6 nF
Sound Pressure Output
75 dB
Torque Constant
1.70 Nm/A
Rotor Inertia
0.01100 kgm2
Encoder Type
Multi-turn EnDat2.1
Surface Cooling Constant Torque
22.5 Nm
Low Constant Current
15.3 A
Frequently Asked Questions
Why is a torque constant of 1.70 Nm/A significant for MSK100A-0300-NN-M2-BP0-RNNN in precision axes?
The higher torque per ampere simplifies current-to-torque linearization for lowering thermal loading for a given torque demand. It also increases control authority for making disturbance rejection and feedforward compensation more predictable across operating points.
What practical benefits do IP65 housing and insulation class 155 provide on MSK100A-0300-NN-M2-BP0-RNNN in production environments?
The IP65 resists dust ingress and low-pressure water jets for protecting bearings and encoder terminations during washdowns or coolant spray. Its thermal class 155 margins protect winding enamel during transient overloads for supporting longevity with appropriate derating in warmer cabinets.
Why specify a keyed shaft (DIN 6885-1) on MSK100A-0300-NN-M2-BP0-RNNN rather than a plain shaft in torque-transmission applications?
The keyway provides positive mechanical engagement, limiting micro-slip at the hub interface under cyclic torque. It simplifies alignment for couplings and timing pulleys, and eases service by preserving repeatable phasing after disassembly.
How does the 0.01100 kg·m² rotor inertia of MSK100A-0300-NN-M2-BP0-RNNN affect indexing performance and tuning bandwidth?
Its moderate inertia smooths ripple and cogging effects for improving speed stability at low speeds. It also allows achievable acceleration without over-sizing the drive, provided load inertia ratios stay within the IndraDrive-recommended range.
What does a discharge/leakage capacitance of about 4.6 nF imply for EMC when integrating MSK100A-0300-NN-M2-BP0-RNNN into multi-axis machines?
The capacitive path to ground shunts high-frequency common-mode currents, reducing radiated emissions on cable shields. It is important to ensure bonding straps and 360° shield terminations at the B-side connector to control conducted noise back into the DC bus.
Common Misspellings
MSK100A0300NNM2BP0RNNN
MSK100A 0300 NN M2 BP0 RNNN
MSK-100A-0300-NN-M2-BP0-RNNN
Internal Product Review
The Bosch Rexroth MSK100A-0300-NN-M2-BP0-RNNN servomotor offers 54.0 Nm maximum torque and operates at speeds up to 5200 r/min, making it suitable for precise motion control. Its EnDat2.1 multiturn encoder and IP65 protection support reliable performance in packaging, machine tools, and food processing industries. The motor’s keyway shaft and natural convection cooling ensure smooth, efficient integration.
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