R911317769 (MSK076C-0300-NN-M2-UP0-RNNN)

MSK IndraDyn S Synchronous Motors

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The R911317769 (MSK076C-0300-NN-M2-UP0-RNNN) is an IndraDyn S Synchronous Servomotor designed with a motor size of 076 and length C, equipped with a shaft featuring a keyway. The servomotor utilizes optical multiturn absolute encoder technology (EnDat2.1) with a resolution of 2048 signal periods and a rotatable 240° encoder connector. Technical performance includes continuous torque of 13.5 Nm and continuous current of 15.6 A at 100 K overtemperature, with a maximum torque of 43.5 Nm and a maximum current of 32.4 A. Cooling is via natural convection, and the unit achieves winding inductivity of 12,600 mH. The motor is designed for operation between 0 and 40°C, features IP65 protection, sound pressure levels below 75 dB(A), and permits a maximum speed of 4700 min⁻¹. This model does not include a holding brake and features increased concentricity design.

Technical Specifications

Product Type
Synchronous Motor

Cooling Overtemperature
70K or 100K

60K Overtemperature Continuous Torque at Standstill
12 Nm

60K Overtemperature Continuous Current at Standstill
7.2 Amps

100K Overtemperature Continuous Torque at Standstill
13.5 Nm

100K Overtemperature Continuous Current at Standstill
8.1 Amps

Maximum Torque
43.5 Nm

Maximum Current
32.4 Amps

Winding Resistance at 20 degrees Celsius
1.85 Ohms

Motor Constant Voltage
113 V/min-1

Torque Constant
1.84 Nm/A

Ambient Temperature
00C to 40C

Winding Inductivity
12.6 mH

Leakage Capacitance of Components
6.5 nH

Rotor Moment of Inertia with Brakes
0.0043 kgm^2

Pole Pairs
4

Thermal Time Constant
60 minutes

Maximum Permissible Speed
4700 min-1

Degree of Protection
IP65

Sound Pressure Level
less than 75 dB(A)

Optional Parts
Inertia Brake.

Frequently Asked Questions

How does the EnDat 2.1 multiturn absolute encoder in MSK076C-0300-NN-M2-UP0-RNNN affect position-loop stability and diagnostics?

It provides digital, bidirectional transmission of absolute position plus parameter/diagnostic data for minimizing quantization effects and homing cycles. Its 2048-period optical scale and multiturn memory improve loop determinism and enable condition-oriented service strategies.

Why choose the keyed shaft on MSK076C-0300-NN-M2-UP0-RNNN for backlash-sensitive transmissions vs. purely friction-clamped hubs?

Its keyway enforces positive mechanical indexing and torque transfer for limiting micro-slip under oscillatory loads. It improves repeatability in start/stop profiles; ensure correct key fit and hub tolerance to avoid fretting at the key shoulders.

How does ~12,600 mH winding inductance influence current ripple and current-loop bandwidth?

The higher inductance filters PWM ripple for lowering torque ripple in high-gain loops. Its trade-off is a larger electrical time constant, tune PI gains and sampling to maintain bandwidth without exciting phase lag.

What integration benefits come from the 240° rotatable encoder connector on MSK076C-0300-NN-M2-UP0-RNNN?

Its adjustable orientation eases cable exit in cramped cabinets to reduce bend stress and improve EMC routing options. It simplifies machine service and helps maintain connector sealing when space or conduit approach angles are constrained.

Which environmental protections are typical for MSK IndraDyn S motors, and how does that guide deployment in dusty or washdown zones?

The MSK variants commonly offers IP65 rating for protection against dust ingress and low-pressure water jets, so the sealing and cable glands should be selected accordingly.

Common Misspellings

Internal Product Review

The Bosch Rexroth’s synchronous servomotor MSK076C-0300-NN-M2-UP0-RNNN manages thermal stability through its natural-convection cooling design. It has a keyed shaft and increased concentricity for repeatable mechanics. This unit uses EnDat 2.1 multiturn optical feedback and a 240° rotatable connector for streamline cabling. Its peak torque value is 43.5 Nm and its inductance measures 12.6 H for steady loops to fit into packaging, printing, machine-tool axes and robotics.