LDK Bearings - Professional bearing manufacturer for all kinds of bearing unit since 1986 


What are Mounted Ball Bearings Used For?

What are Mounted Ball Bearings Used For?

Mounted ball bearings are an integral component in a wide range of machinery and equipment. They play a crucial role in enabling rotational motion while reducing friction. This article will provide an overview of what mounted ball bearings are, their basic function, major applications across industries, different types available, and best practices for maintenance.

Mounted ball bearings, sometimes known as anti-friction bearings, consist of freely rotating steel balls enclosed between inner and outer rings fitted inside a housing. The key purpose of mounted ball bearings is to enable the low-friction rotation between two parts in machines and devices. By using the rolling motion of the balls, these bearings can reduce rotational friction and handle both radial and axial loads.


Ball bearings are ubiquitous across industrial, automotive, aerospace, and consumer applications. They enable the smooth, efficient, and reliable operation of almost any equipment involving rotational mechanisms. Maintaining proper mounting, lubrication, and maintenance of ball bearings is essential for optimal performance and preventing premature failures.


Basic Function of Mounted Ball Bearings


The classic ball bearing consists of four main components - the balls, inner ring, outer ring, and cage. The inner ring fits over the shaft which needs to rotate. The balls roll between the inner and outer ring, facilitating smooth rotational motion by reducing friction. The cage holds the balls in place and evenly spaces them around the bearing.


When the shaft rotates, the inner ring also rotates with it. The balls then roll between the inner and outer rings, allowing near-frictionless motion as they spin freely. This reduces heat, noise, and wear. Ball bearings support both radial and axial loads. The ball and raceway contacts have point contact that is capable of handling high stresses.


By reducing friction, ball bearings minimize power losses and prevent overheating. They also increase rotational accuracy and stability. Their low-friction operation is critical for applications involving high speeds or heavy radial loads. Overall, mounted ball bearings are vital components that improve mechanical efficiency.


Applications of Mounted Ball Bearings


Automotive Industry


Mounted ball bearings have widespread use in automotive applications like engines, transmissions, wheels, alternators, and water pumps. In car engines, they support the crankshaft, camshaft, and allow smooth rotation of the flywheel. Ball bearings in wheel hubs allow wheels to spin freely around axles. They handle the vehicle load and reduce friction from road contact.

Using mounted ball bearings in vehicles improves fuel efficiency, increases engine power, reduces noise and vibrations, and provides greater steering control. They are often sealed or shielded to prevent dirt and moisture damage.


Industrial Machinery


Ball bearings enable rotation and withstand radial and axial loads in all types of industrial machines involving rotary motion. Examples include conveyors, compressors, turbines, blowers, pumps, electric motors, machine tool spindles, and gearboxes. The bearings reliably support and precisely guide the moving parts even under challenging operating conditions.

The demands of heavy-duty machinery require ball bearings designed for higher capacities, speeds, and withstand greater vibration. Proper installation and lubrication of mounted bearings is especially important in industrial settings to maximize working life.


Aerospace and Aviation


Aircraft engines, gearboxes, flight control systems, helicopter rotor systems, landing gear, and turbines all rely on specially designed mounted ball bearings. They need to withstand high temperatures and speeds in thin atmosphere. The aerospace industry uses ultra-precise ball bearings constructed from alloys resistant to corrosion.

Maintaining near-zero errors in concentricity and zero-play is critical for flight control systems. Runway debris, bird strikes, and temperature fluctuations pose challenges. Therefore, bearings require both durability and low running torque.


Robotics and Automation


High dexterity robotic applications require compact and smooth-motion bearings for rotational joints. Ball bearings provide low-friction performance in the complex movement axes of robot arms, self-driving cars, automated warehouses, and assembly lines.

Stainless steel sealed bearings help withstand dust and moisture in everyday automation uses. For highly specialized applications, ceramic or magnetic bearings may be used. But standard mounted ball bearings offer a versatile, low-cost solution for most robotics.


Other Applications 


Many other specialty fields take advantage of mounted ball bearings due to their versatility, cost-effectiveness, and proven reliability.


Medical and dental equipment uses ball bearings in imaging machines, pumps, sterilizers, and power tools. Low noise is often a requirement along with resistance to chemicals and fluids.


Renewable energy, mining, and construction equipment rely on robust anti-friction bearings that can withstand shock, vibration, and particulates while delivering high-capacity performance.


Even home appliances and consumer electronics utilize ball bearings for fans, motors, cameras, and gaming systems.


Types of Mounted Ball Bearings


There are numerous types of mounted ball bearings catering to different applications. Some key variables designers consider are load capacity, limiting speed, expected life, noise, tolerance, and environmental resistance.


Common varieties include deep groove bearings, angular contact bearings, self-aligning bearings, thrust bearings, and spherical roller bearings. Each has advantages for certain uses based on the loads, speeds, rigidity, friction, and mounting methods required.


Maintenance and Troubleshooting


Like other machine components, mounted ball bearings require proper installation, lubrication, and maintenance for longevity. Using the specified lubricant amount and replacing worn bearings on schedule prevents premature failures. Overloading bearings beyond the dynamic or static capacity also leads to early fatigue.


Excess vibration, noise, heat, or looseness coming from bearings often indicates issues. Contamination from dirt or moisture is another common problem. Determining the root cause then correcting factors like misalignment early maximizes bearing life.




Mounted ball bearings form a ubiquitous but often overlooked part of most modern machines. By reducing friction, they enable smooth, efficient operation under challenging loads and high speeds. While plain bearings allow simpler motion, ball bearings excel in demanding performance requirements across transportation, industrial, aerospace, automation, and consumer sectors. Continued advances in bearing materials, manufacturing, lubricants, and designs will improve the capabilities further. Given their versatility, mounted ball bearings will continue serving a vital role across an array of applications.


Deyuan Smart Technology (Fujian) Co., Ltd is a highly respected ball bearing manufacturer, offering a range of core services focused on product quality, reliability verification, and customer satisfaction. With over three decades of experience in the industry, we have been IATF16949, ISO14001, and ISO45001 certified since 1986, demonstrating our commitment to meeting stringent quality and environmental standards.


Our dedicated R&D capabilities ensure that we stay at the forefront of technological advancements, allowing us to continuously improve and innovate our products. In addition, our advanced measurement center is equipped with various precision measurement facilities, enabling us to maintain strict quality control and precision throughout the manufacturing process.


At Deyuan Smart Technology, we take great pride in the recognition our product quality and services have garnered from customers in the industry. We strive to provide exceptional products and services that meet and exceed customer expectations. You can trust us as your reliable partner in the ball bearing industry. For further inquiries or to discuss your specific requirements, please contact kzhang@ldk-bearings.com or call +86-592-580 7618. We eagerly look forward to the opportunity to work with you.




Schaeffler Group. (2020). Rolling Bearings.


Ball, Robert E. (2000). Bearings and Bearing Metals. ASM International.


Milwaukee School of Engineering (MSOE). (2022). How Ball Bearings Work. Physics of Ball Bearings.


Harris, T.A. and Kotzalas, M.N. (2006). Fundamental Ideas of Bearing Innovation. CRC Press.


E.V. Zaretsky (2010) Bearing Prepares: Into the 21st 100 years. ASTM Global.


Juvinall, R.C. and Marshek, K.M. (2006). The fundamentals of component design for machines. John Wiley and Children.


Harris, T.A. and Desai, J.P. (2015). Grinding and Wear of Bearing Materials. ASM Worldwide.

Basic Information
  • Year Established
  • Business Type
  • Country / Region
  • Main Industry
  • Main Products
  • Enterprise Legal Person
  • Total Employees
  • Annual Output Value
  • Export Market
  • Cooperated Customers

Send your inquiry

Choose a different language
bahasa Indonesia
Current language:English