50mm 48V Customized Low Noise Frameless Motor For Collaborative Robert
Frameless motors are widely used in industrial robots, collaborative robots, and service robots, especially in joint drive and precision motion control. The high power density and compact design of frameless motors make robots lighter and more flexible, while improving motion accuracy and response speed. This has promoted the rapid development of robotics technology and made it more widely used in manufacturing, medical and home services.
1. Industrial Robot Joint Actuation
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Application: Frameless motors are commonly used in the joint actuation of industrial robots, especially in six-axis robots.
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Advantages: The high power density and compact design of frameless motors make robot joints lighter and more flexible, while providing high torque and precise control.
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Impact: Improves the motion accuracy and speed of industrial robots, enhancing their performance in tasks such as assembly, welding, and material handling.
2. Collaborative Robots (Cobots)
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Application: Collaborative robots often work alongside humans and require high safety and flexibility.
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Advantages: The lightweight and high responsiveness of frameless motors enable cobots to quickly and safely respond to human interactions, reducing collision risks.
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Impact: Enhances the application of cobots in healthcare, electronics assembly, and small-batch production, improving production efficiency and safety.
3. Service Robots
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Application: Service robots are used in environments such as homes, hotels, and healthcare for tasks like cleaning, meal delivery, and caregiving.
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Advantages: The compact design and high efficiency of frameless motors allow service robots to move flexibly in confined spaces while maintaining low energy consumption.
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Impact: Improves the mobility and battery life of service robots, increasing their practicality and user experience in daily life.
4. Surgical Robots
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Application: Surgical robots are used in minimally invasive surgeries, requiring extremely high precision and reliability.
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Advantages: The high precision and rapid response of frameless motors enable surgical robots to perform delicate operations, reducing surgical risks and recovery time.
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Impact: Enhances the accuracy and success rate of surgeries, advances minimally invasive surgical techniques, and improves patient outcomes.
5. Drones and Flying Robots
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Application: Drones and flying robots are used for tasks such as aerial photography, logistics, and search and rescue.
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Advantages: The lightweight and high power density of frameless motors allow drones to carry more payload while maintaining efficient flight performance.
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Impact: Improves the endurance and payload capacity of drones, expanding their applications in logistics, agriculture, and emergency rescue.
Structure&Dimension

Electrical Specfication
Frameless motors are compact, lightweight, and designed for direct integration into systems.
1. Rated voltage of 48VDC.Provides stable power supply, suitable for various application scenarios.Ensures stable operation of equipment under various working conditions, reduces failure rates, and improves production efficiency.
2. Rated torque of 0.3N.m, peak torque of 0.96N.m. Delivers sufficient torque to handle different load requirements.Enhances the load capacity of the equipment, ensures efficient operation under heavy loads, and reduces downtime.
3. Rated speed of 5000RPM, maximum speed of 6200RPM.High-speed capability, suitable for high-speed applications. Improves production efficiency, shortens production cycles, and meets high-speed production demands.
4. Rated power of 157W. Provides sufficient power to support efficient operation. Ensures high efficiency during intensive work, reducing energy consumption costs.
5. Line resistance of 0.93 ohms@20°C, line inductance of 0.45mH. Low resistance and inductance reduce energy loss. Improves energy efficiency, lowers operating costs, and extends equipment lifespan.
6. Lightweight design facilitates easy installation and maintenance. Reduces the complexity of installation and maintenance, lowers labor costs, and improves operational flexibility.
7. Electrical time constant of 0.48ms.Fast response time. Improves equipment responsiveness, ensures precise control, and enhances production accuracy and product quality.
Perforamance Curve
General Specifications
This frameless motor has high stability, high precision and high safety, suitable for a variety of environmental conditions. Its detailed wiring instructions and color identification simplify the installation and maintenance process, ensuring the efficient operation of the motor in various applications.
Winding Type: Star connection
Performance characteristics: Star connection helps balance the three-phase current, reduce harmonics and electromagnetic interference, and improve the running stability and efficiency of the motor.
Hall Effect Angle: Electrical Angle of 120 degree
Performance characteristics: 120-degree electrical angle distribution ensures the accuracy and smoothness of motor commutation, improves the control accuracy and running stability of the motor.
Dielectric Strength: 1000VAC/1S.2mA
Performance characteristics: High dielectric strength ensures the safety of the motor in high-voltage environments and enhances the reliability and durability of the motor.
Insulation Resistance: 100MΩ, 500VDC
Performance characteristics: High insulation resistance reduces leakage current, improves electrical safety, and ensures stable operation of the motor in humid or harsh environments.
Operation Ambient: -20°C ~ +50°C
Performance Features: Wide temperature range and strong adaptability. The motor can operate stably under extreme temperature conditions and is suitable for various climate environments.
Insulation Class: Class B
Performance Features: Class B insulation class provides good heat resistance and durability, improving the long-term reliability of the motor.
Wire Connection
Wiring Method
Thermistor (NTC)
PIN1: Thermistor (NTC2)
PIN2: Thermistor (NTC1)
Function: Used to monitor the motor temperature and prevent overheating.
Hall Effect Sensors
PIN3: Hall Power Negative (GND)
PIN4: Hall A (Ha)
PIN5: Hall B (Hb)
PIN6: Hall C (Hc)
PIN7: Hall Power Positive (Vcc)
Function: Used for motor position detection and commutation control.
Three-phase power cable (Phase Wires)
Yellow: Phase U
Red: Phase V
Black: Phase W
Function: Connect the three-phase power supply of the motor to provide power.
The motor can be designed &manufactured with customized request.