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Applications of bearings in robotics: Facilitating high-precision and flexible motion

Applications of bearings in robotics: Facilitating high-precision and flexible motion

With the rapid development of artificial intelligence, automated manufacturing, and humanoid robot technology, robots are being widely used in industrial manufacturing, logistics and warehousing, medical assistance, and intelligent services. As a crucial fundamental component of robot motion systems, bearings play a vital role in support, guidance, friction reduction, and precise positioning.

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Whether in industrial robots or emerging humanoid robots, bearings are widely distributed in joint systems, reducers, lead screw transmission mechanisms, and servo motors, ensuring precise movement and stable operation of the robot.

Applications: Bearings are widely used in core robot systems.
Robot Joint Systems

Robot joints need to perform rotation, swinging, and complex motion control. Bearings are responsible for supporting joint movement and ensuring operational accuracy.

Common Applications:

Shoulder Joint
Elbow Joint
Wrist Joint
Hip Joint
Knee Joint
Reducer Systems

Reducers are known as the “power joints” of robots and are important components connecting servo motors and actuators.

Bearings are widely used in:

Harmonic reducers
RV reducers
Planetary reducers

Common products include:

Crossed roller bearings
Flexible bearings
Thin-walled angular contact ball bearings
Thin-walled tapered roller bearings
Deep groove ball bearings
Needle roller bearings
Screw drive systems

In humanoid robots and precision actuators, ball screws and planetary roller screws are widely used for linear motion control.

Related bearings include:

Four-point contact ball bearings
Angular contact ball bearings
Thrust bearings
Deep groove ball bearings
Motor systems

Robot servo motors and coreless motors require bearings to provide stable support.

Common application bearings:

Deep groove ball bearings
Miniature ball bearings
High-speed precision bearings
Requirements: The robotics industry places higher standards on bearings.

Compared to traditional industrial equipment, robots have much stricter requirements for bearing performance.

High Precision

Robot motion control requires precise positioning; therefore, bearings must possess extremely high rotational accuracy and operational stability.

High Rigidity

During high-speed motion and complex movements, bearings need to maintain sufficient rigidity to reduce deformation and errors.

Long Lifespan

Robots typically require long-term continuous operation, necessitating bearings with excellent fatigue life and reliability.

Low Noise and Low Vibration

Low noise operation has become a crucial indicator, especially in collaborative and humanoid robots.

Solution: USU Bearings Robot Bearing Solutions

Addressing the evolving needs of the robotics industry, USU Bearings continuously provides customers with high-performance bearing products.

High-Precision Manufacturing

Strict manufacturing processes and quality control ensure consistent bearing precision.

Optimized Structural Design

Optimized internal structural design enhances operational stability for high-speed, frequent start-stop, and complex motion conditions in robots.

Multiple Product Lines Supported

USU offers:

Deep Groove Ball Bearings
Angular Contact Ball Bearings
Four-Point Contact Ball Bearings
Cylindrical Roller Bearings
Needle Roller Bearings
Crossed Roller Bearings
Thin-Wall Bearings

Meeting diverse application needs in robot reducers, joint systems, and motor systems.

Long Lifespan and High Reliability

Using high-quality materials and advanced heat treatment processes improves bearing wear resistance and fatigue life, helping customers reduce maintenance costs.

Services: USU Bearings Supports the Development of the Robotics Industry

In addition to a stable and reliable product supply, USU Bearings provides comprehensive technical service support to its customers.

Bearing Selection Service

Recommending suitable bearing solutions based on robot structural design and operating requirements.

Technical Consulting Support

Assisting customers with bearing selection, installation, lubrication, and fault analysis.

OEM Customization Service

Supporting customization of special sizes, clearances, branding, and packaging.

Global Supply Capability

Leveraging a complete supply chain system, providing stable and reliable product delivery services to robot manufacturers.

Conclusion

The development of robotics technology relies heavily on high-performance basic components, and bearings are a crucial component for achieving high precision, high rigidity, and long service life.

From reducers to joint systems, from lead screw drives to servo motors, bearings are present in every critical aspect of robot motion control.

USU Bearings will continue to provide professional bearing solutions for industrial robots, humanoid robots, and automation equipment, working with customers to drive the development of intelligent manufacturing and the robotics industry.