Four Point Contact Ball Bearings Custom

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Four Point Contact Ball Bearings Suppliers

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Ningbo DHK Precision Bearing Co., Ltd.

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Ningbo DHK Precision Bearing Co., Ltd. (“DHK” for short) is a specialist enterprise engaged in the R&D, manufacture and sales of bearings. Is a famous China Four Point Contact Ball Bearings Suppliers and Four Point Contact Ball Bearings Manufacturers, we offer Four Point Contact Ball Bearings for sale. And is located in Ningbo Zhenhai Economic Development Zone with convenient transportation. Since the establishment for over a decade, "technology", "quality" and "service" have always been the initial issues in our mind for the sake of development. We provide reliable products and special customized services for global enterprises in heavy industry and have got the Satisfaction and won good reputation of a number of enterprises at home and abroad.

DHK mainly produces cylindrical roller bearings, conical roller bearings, self-aligning roller bearings, ball bearings, as well as various kinds of non-standard bearings and bearings with specially treated surface. So far, DHK’s bearings have been widely applied in such fields as engineering machinery, industrial pump, machine tool, compression engine, gear case, wind power and metallurgy in developed European and American countries.

DHK has the measuring room and inspection room of bearings in the industry and has introduced top-end inspection equipment worldwide and established the QC system in China,thus guaranteeing product quality in an all-round way.


DHK has passed IATF16949 quality system certification and ISO14001 environmental management system certification;and DHK is a national high-tech enterprise.

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Industry Knowledge Expansion About This Category

Four Point Contact Ball Bearings, often referred to as 4-point bearings or QJ bearings, are a specialized type of angular contact ball bearings. They are designed to handle combined loads, including radial and axial forces, in a single bearing unit. Unlike traditional ball bearings that predominantly support radial loads, 4-point bearings have a distinctive design that allows them to accommodate both types of loads simultaneously.
These bearings are constructed with four points of contact between the balls and the raceways. This unique arrangement consists of two points of contact that primarily support radial loads, and the other two points are dedicated to bearing axial loads. This design enables 4-point bearings to offer increased load capacity and enhanced operational efficiency compared to standard bearings.
The versatility and load-bearing capabilities of Four Point Contact Ball Bearings make them indispensable in various industrial applications. Some notable examples include:
Robotic Joints: 4-point bearings play a crucial role in the robotic industry by facilitating the smooth and precise movement of robotic arms and joints. As robots perform intricate tasks, these bearings provide stability, allowing the robotic arms to handle both the weight of the components and the forces generated during motion.
Cranes and Excavators: Construction equipment such as cranes and excavators often deal with heavy loads and complex movements. Four point contact ball bearings are well-suited for these applications as they can support the weights and dynamic forces involved in lifting and rotating heavy loads.
Aerospace and Defense: In the aerospace sector, Four Point Contact Ball Bearings find application in radar systems, antenna arrays, and satellite mechanisms. The ability to handle radial and axial loads makes them valuable in situations where precision and reliability are paramount.
Medical Equipment: Medical devices, such as CT scanners and robotic surgical systems, require precision components to ensure accurate movements. Four point contact ball bearings offer the necessary load-bearing capabilities to maintain the precision and consistency required in these sensitive applications.

3. What Are the Advantages of Four Point Contact Ball Bearings?
Four Point Contact Ball Bearings offer several distinct advantages that contribute to their widespread use in various industries:
Load Distribution: The four-point contact design results in a more even distribution of loads across the bearing's contact points. This characteristic minimizes stress concentrations and wear, thereby extending the overall lifespan of the bearing.
Axial and Radial Support: The unique design of 4-point bearings allows them to simultaneously support both radial and axial loads. This capability simplifies the design of machinery and equipment by reducing the need for multiple bearings to handle different types of loads.
Space Efficiency: With their compact design, Four Point Contact Ball Bearings are ideal for applications where space is limited. This attribute is especially advantageous in industries that require high-performance components within confined spaces.
High Speeds: The optimized contact angles and load distribution of 4-point bearings enable them to withstand high rotational speeds without compromising performance. This makes them suitable for applications where rapid motion is essential.
Cost-Effectiveness: In scenarios where separate bearings would traditionally be used to manage axial and radial loads independently, a single 4-point bearing can often replace them, resulting in cost savings through reduced inventory and simplified assembly processes.