R911317623 (MSK076C-0300-NN-M1-UG1-NNNN)

MSK IndraDyn S Synchronous Motors

Rated 4.6 stars (11 total reviews)

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The R911317623 (MSK076C-0300-NN-M1-UG1-NNNN) is a Rexroth Indramat synchronous servomotor designed for industrial automation, featuring natural convection cooling and an IP65 protection rating. The motor supports a temperature range of 0–40°C and installation altitudes up to 1000 meters. It delivers a continuous standstill torque of 13.5 Nm and current of 8.1 A at 100K overtemperature, or 12 Nm and 7.2 A at 60K, both with a maximum torque of 43.5 Nm and peak current of 32.4 A. Technical data includes a 113 V/min-1 voltage constant, 1.84 Nm/A torque constant, 1.85 Ω winding resistance, 12.6 mH inductivity, four pole pairs, and a rotor inertia of 0.0043 kg·m². The shaft is plain, brake torque is 11 Nm, and maximum speed is 4700 min⁻¹. The motor integrates an electrically-released holding brake and a multiturn absolute optical encoder with Hiperface interface, rotatable 240°, 128 signal periods resolution, and operates below 75 dB(A) sound pressure.

Technical Specifications

Product Type
Synchronous Motor

Cooling Type
Surface Cooling

Overtemperature Values
100K, 60K

Continuous Torque at Standstill (100K)
13.5 Nm

Continuous Current at Standstill (100K)
8.1 A

Continuous Torque at Standstill (60K)
12 Nm

Continuous Current at Standstill (60K)
7.2 A

Maximum Torque
43.5 Nm

Permissible Peak Current
32.4 Amps

Voltage Constant (at 20C)
113V/min-1

Torque Constant
1.84 Nm/A

Winding Resistance
1.85 Ohms

Winding Inductivity
12.6 mH

Leakage Capacitance of Components
6.5 nH

Pole Pairs
4

Thermal Time Constant
60 minutes

Rotor Moment of Inertia
0.0043 Kgxm3 without braking

Maximum Speed
4700min-1

Sound Pressure Level
<75 dB(A)

Degree of Protection
IP65

Ambient Operating Temperature
00C to 400C

Maximum Installation Height
1000 meters above sea level.

Frequently Asked Questions

What torque/current relationships should I expect on MSK076C-0300-NN-M1-UG1-NNNN, and how do they influence current-loop tuning?

The torque constant of near 1.84 Nm/A, 1 A produces 1.84 Nm at 20 °C to enable predictable current-to-torque transfer. It is used with the 7.2/8.1 A continuous ratings and 32.4 A peak to set bandwidth and current limits.

How does the Hiperface multiturn encoder in MSK076C-0300-NN-M1-UG1-NNNN improve servo loop behavior and commissioning accuracy?

It provides absolute position over multiple turns and 128 sine periods per revolution to allow fine interpolation for tight position and velocity loops. Its reduced homing times and deterministic startup simplify machine sequencing and safety checks.

Why is the specified winding inductance (~12.6 mH) on MSK076C-0300-NN-M1-UG1-NNNN significant for EMC and drive stability?

Its higher phase inductance filters PWM ripple for reducing current ripple and acoustic emissions while easing EMI compliance. It also relaxes current-loop gain requirements to improve phase margin with typical IndraDrive switching frequencies.

How does the 25-minute thermal time constant affect duty-cycle planning for repetitive motion cycles?

The motor heats and cools predictably over long cycles, so short overloads can be scheduled without exceeding thermal models. It is used at 60 K/100 K continuous points and the time constant to size motion profiles.

What does the “U” plug and rotatable 240° connector on MSK076C-0300-NN-M1-UG1-NNNN enable in tight envelopes?

It lets the feedback/power connector clock to available cable exit angles to ease routing and minimizes bend stress. Its flexibility reduces connector strain and clearance issues in dense machine frames.

Common Misspellings

Internal Product Review

The MSK076C-0300-NN-M1-UG1-NNNN motor from Indramat pairs Hiperface multiturn feedback with a plain shaft and it is equipped with an electrically released holding brake. Its continuous torque reaches 13.5 Nm at 100 K and its torque constant is specified as 1.84 Nm/A. This unit has an inductive value of 12.6 mH and possess IP65 sealing, while enables quiet (<75 dB[A]) operation to suit printing lines and food-packaging automation.