6SM 71-M300-G-426
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The 6SM 71-M300-G-426 is a synchronous servo motor manufactured by Kollmorgen. As part of the 6SM Synchronous Servo Motors Series, it features a frame size of 71 and operates at a rated power of 0.37 kW. The motor has a speed of 2800 rpm and is classified as IP55 with a high-efficiency rating of IE2.
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Product Description:
This 6SM 71-M300-G-426 Synchronous Servo Motor from Kollmorgen is ideal for precise torque and speed control applications. It is designed to work exclusively with SERVOSTAR series servo amplifiers. The model ensures stable performance and long operating life with robust construction.
The 6SM 71-M300-G-426 synchronous servo motor operates at a rated speed of 3000 min⁻¹ and delivers a rated torque of 16.3 Nm. The standstill torque reaches 22 Nm with a standstill current of 15.6 A. The rated current of the motor is 12.2 A and the rated power output is 5.1 kW. It supports a peak current of 51 A for dynamic operation. The torque constant is 1.41 Nm/A and the voltage constant is 121 mVmin. The servo motor is compatible with a 400 V supply and functions at 50 – 60 Hz within a TN or TT system with an earthed neutral point. The winding resistance (Ph-Ph) is 0.57 Ω and the winding inductance is 9.0 mH. It is equipped with a resolver featuring 2 poles. The insulation class of this motor is F per DIN 57530 and the thermal switch contact activates at 145 ± 5°C. The axial load capacity at the shaft end is 230 N while the radial load capacity is 700 N. The motor has a rotor moment of inertia of 42 × 10⁻⁵ kgcm². The static friction torque is measured at 0.334 Nm.
The 6SM 71-M300-G-426 synchronous servo motor’s flange adheres to tolerance class N per DIN 42955 and its vibration class also meets DIN ISO 2373. The maximum flange temperature for the motor is + 65 °C ± 10 % at rated conditions. The design of this 6SM series motor conforms to IM B5 (V1, V3) mounting under DIN 42950 standards.
Frequently Asked Questions about 6SM 71-M300-G-426:
Q: How does the 6SM 71-M300-G-426 motor manage thermal protection during operation?
A: The 6SM 71-M300-G-426 uses a thermal switch contact that activates at 145 ± 5°C. This prevents overheating and ensures long-term reliability under rated conditions.
Q: What are the load capabilities of the 6SM 71-M300-G-426 synchronous servo motor’s shaft?
A: This model supports an axial load capacity of 230 N and a radial load capacity of 700 N. These ratings allow it to handle substantial mechanical stress without degradation.
Q: How precise is the torque control of the Kollmorgen 6SM 71-M300-G-426 motor?
A: With a torque constant of 1.41 Nm/A and a standstill torque of 22 Nm at 15.6 A, the motor delivers stable and accurate torque for precision applications.
Q: What mounting standards does the 6SM 71-M300-G-426 servo motor comply with?
A: The 6SM 71-M300-G-426 is designed to conform to IM B5 (V1, V3) mounting under DIN 42950. This ensures compatibility with standard industrial mounting systems.
Q: How does the winding design affect performance in the 6SM 71-M300-G-426 synchronous servo motor?
A: The motor’s winding resistance is 0.57 Ω with an inductance of 9.0 mH. This balance supports efficient current flow and contributes to stable motor operation.
