China Hot selling Auto Parts Front Rear Axle Wheel Hub Units Bearing Dac255242 Dac25520037 Dac28580042 Dac32720345 Dac38730040 Double Row Angular Contact Ball Roller Bearing with Good quality

Product Description

Product Description

Wheel hub bearings are components used on automobile axles to bear load and provide precise guidance for the rotation of the wheel hub. They bear both axial and radial loads and are an important part of the vehicle’s load-bearing and rotation.
Many types of bearings have been designed to meet the specific requirements of the automotive industry. They are primarily Angular Contact Ball Bearings, with additional features to suit industry requirements.
We have developed numerous automotive bearings for:
Wheel applications
Clutch release
Steering assemblies
Car air conditioners
Hub unit assemblies
Water pumps of automobiles
Apart from the above specially developed automotive bearings, many standard bearings are also used in automotive applications.
Other special types of automotive bearings have also been developed to meet specific application requirements. Technical information for such bearings that do not appear in our regular production program can be made available whenever required.

Bearing Type Wheel Hub Bearing
Bearing Models DAC255242
Bearing Brand JDZ / OEM
Bearing Size 25*52*42mm
Bearing Material Chrome Steel
Bearing Clearance C0 / C3
Application industry Cars, wheels, auto parts, shafts
Precision Grade P0/P6
Quality Certifications IATF 16949
Bearing Package Plastic Bag + Box + Carton + Pallet, or Per clients requirement.
Bearing MOQ 10 PCS
Our Serice  OEM,24 hours online
Bearing Sample Available and Free
Shipping Port HangZhou/ZheJiang /HangZhou

Detailed Photos

Product Parameters

Company Profile

ZheJiang CZPT Precision Bearing Co.,Ltd. was founded by ZheJiang Defa Bearing Co.,Ltd, factory is located in ZheJiang province, China. 
We are a bearing manufacturer integrating the research, development and sales of bearings, with a floor area of 18,000 square meters and a plant area of 8,800 square meters. Equipped with modern production equipment and advanced detection instruments. 

We can provide all types bearings and OEM service according to customers’ requirements. 

Our products are widely used in the automobile, agricultural, textile production, mining, printing and packing industries, in addition to various applications at airports, in air-conditioning systems, conveying devices, ships ad so on. Our products are being exported to more than 50 countries and regions overseas including Singapore, Thailand, Iran, Turkey, Poland, Italy, England, France, Russia, Germany, the United States, Australia, Argentina, Brazil as well as other countries and regions all over the world.

We are a trusted and reliable bearing supplier, choose us to be your good partner!


Quality Inspection

100% Quality inspection to ensure the bearings are with good quality before shipping. 

Our Advantages

1.  Professional production team with advanced production equipment and testing instruments. 
2.  Many years of export experience can provide customers with better service and problem-solving capabilities.
3.  Customers all over the world enable us to better understand the market and provide customers with suitable bearings.
4.  Sincerity, cooperation, mutual and provide good quality bearings for clients are the development idea of our company
5.  Quick delivery, shipping goods on time. Save more time and cost for all customers. 

Packaging & Shipping


1. Q: Are you trading company or manufacturer ?
   A: We have our own factory , our type is factory + trade.

2. Q: Could you accept OEM and customize?
    A: Yes, we can customize products according to your sample or drawing.

3. Q: How long is your delivery time? 
    A: If stock, within 7 days to ship or based on your order quantity.

4. Q: Could you supply sample for free? 
    A: Yes, we can offer the sample for free,do you mind to buy a “ticket” for her?

  More details, please contact with us. Thanks for your time !!!  

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After-sales Service: Full After Sale Service
Type: Wheel Hub Bearing
Material: Chrome Steel
Tolerance: P0 P6 P5 P4
Certification: ISO9001, TS16949
Clearance: C0 or C3
US$ 0/Set
1 Set(Min.Order)

Request Sample



Customized Request

roller bearing

How do innovations and advancements in roller bearing technology impact their use?

Innovations and advancements in roller bearing technology have a significant impact on their use in various industries. These advancements drive improvements in bearing performance, durability, efficiency, and overall reliability. They enable the use of roller bearings in increasingly demanding applications and contribute to enhanced productivity, reduced maintenance requirements, and improved safety. Here’s a detailed explanation of how innovations and advancements in roller bearing technology impact their use:

  • Increased Load Capacity:

Advancements in roller bearing technology have led to the development of bearings with higher load-carrying capacities. Innovative designs, improved materials, and optimized manufacturing processes have allowed for the creation of bearings capable of handling heavier loads. This enables their use in industries such as construction, mining, or wind energy, where heavy-duty applications are common. The increased load capacity of modern roller bearings provides improved safety margins and allows for the design of more compact and efficient machinery.

  • Enhanced Durability and Reliability:

New technologies and materials have significantly improved the durability and reliability of roller bearings. Advanced heat treatment techniques, surface coatings, and specialized alloys enhance the bearing’s resistance to wear, fatigue, and corrosion. These advancements extend the bearing’s operating life, reduce the frequency of maintenance and replacements, and increase the overall reliability of industrial systems. Bearings with improved durability lead to lower downtime, increased productivity, and decreased costs associated with maintenance and equipment failure.

  • Higher Speed Capability:

Innovations in roller bearing technology have enabled bearings to operate at higher speeds while maintaining performance and reliability. Advanced cage designs, optimized internal geometries, and improvements in lubrication techniques help minimize friction, reduce heat generation, and enhance the bearing’s ability to handle high rotational speeds. This is particularly beneficial in industries such as aerospace, automotive, or machine tooling, where high-speed machinery is prevalent. The ability to use roller bearings at higher speeds contributes to improved efficiency, precision, and productivity.

  • Improved Efficiency:

Advancements in roller bearing technology have led to increased efficiency in industrial systems. Reduced friction, lower energy consumption, and improved lubrication techniques minimize power losses associated with bearing operation. Bearings with lower frictional torque contribute to higher overall system efficiency, resulting in energy savings and reduced operating costs. Enhanced efficiency is particularly valuable in industries that rely on large-scale machinery or equipment, such as power generation, transportation, or manufacturing.

  • Specialized Applications:

Innovations in roller bearing technology have enabled the development of specialized bearings for unique applications. Industries with specific requirements, such as extreme temperatures, corrosive environments, or vacuum conditions, can benefit from tailored solutions. Specialized roller bearings designed to withstand these challenging conditions, such as high-temperature bearings, corrosion-resistant bearings, or vacuum-compatible bearings, expand the range of applications where roller bearings can be used effectively.

  • Condition Monitoring and Predictive Maintenance:

Advancements in roller bearing technology have facilitated the integration of condition monitoring systems and predictive maintenance techniques. By incorporating sensors, wireless connectivity, and data analytics capabilities, modern roller bearings can provide real-time information about their operating conditions, performance, and health. This allows for proactive maintenance, early fault detection, and optimization of maintenance schedules. Condition monitoring and predictive maintenance help minimize unplanned downtime, improve equipment reliability, and optimize maintenance costs.

Overall, innovations and advancements in roller bearing technology have revolutionized their use in industrial applications. These advancements have improved load capacity, durability, speed capability, efficiency, and enabled specialized applications. By leveraging the latest developments in roller bearing technology, industries can achieve higher levels of performance, reliability, and productivity in their machinery and equipment.

roller bearing

How do roller bearings perform in high-speed or high-load applications?

Roller bearings are designed to perform effectively in both high-speed and high-load applications, offering reliable operation and exceptional performance under demanding conditions. The specific design features and characteristics of roller bearings enable them to handle these challenging operating conditions. Here’s a detailed explanation of how roller bearings perform in high-speed or high-load applications:

  • High-Speed Applications:

In high-speed applications, roller bearings are capable of accommodating rapid rotation while maintaining their performance and integrity. Several factors contribute to the ability of roller bearings to handle high speeds:

  • Cage Design: Roller bearings often incorporate a cage or separator that keeps the rolling elements evenly spaced and separated. This design minimizes friction and prevents contact between the rolling elements, even at high speeds.
  • Material Selection: Roller bearings are manufactured using high-quality materials, such as steel or ceramic, that provide excellent strength, hardness, and durability. These materials allow the bearings to withstand the centrifugal forces and dynamic loads associated with high speeds.
  • Lubrication: Proper lubrication is essential for high-speed applications. Lubricants with low viscosity and high thermal stability are used to minimize friction and dissipate heat effectively. The lubricant also helps to reduce the risk of bearing failure due to overheating caused by friction at high speeds.
  • Critical Speed Considerations: Roller bearings are designed to operate below their critical speed, which is the rotational speed at which the bearing experiences excessive vibration and potential failure. By selecting the appropriate bearing size and design, the critical speed can be avoided or minimized, ensuring stable and reliable operation at high speeds.
  • High-Load Applications:

Roller bearings excel in high-load applications, where they are subjected to significant radial or axial loads. The following factors contribute to the performance of roller bearings under high-load conditions:

  • Load-Carrying Capacity: Roller bearings have a higher load-carrying capacity compared to other types of bearings. The design features, such as larger contact areas and multiple rolling elements, distribute the load over a larger surface area, reducing stress concentrations and enhancing load-carrying capability.
  • Rigidity: Roller bearings exhibit high rigidity, which enables them to maintain their shape and resist deformation under heavy loads. This rigidity ensures that the bearing can support the applied loads without excessive deflection or loss of performance.
  • Rolling Element Design: The shape and arrangement of the rolling elements in roller bearings contribute to their ability to handle high loads. The larger contact area and optimized geometry of the rolling elements distribute the load more effectively, reducing stress and preventing premature bearing failure.
  • Lubrication and Surface Treatments: Proper lubrication and the use of specialized surface treatments, such as coatings or heat treatments, enhance the durability and load-carrying capacity of roller bearings. These treatments reduce friction, minimize wear, and improve the resistance to fatigue and surface damage caused by high loads.

Overall, roller bearings demonstrate excellent performance in high-speed or high-load applications. Their ability to handle rapid rotation and accommodate heavy loads is attributed to their cage design, material selection, lubrication, critical speed considerations, load-carrying capacity, rigidity, rolling element design, and surface treatments. By selecting the appropriate type and design of roller bearings and ensuring proper maintenance and lubrication, these bearings can reliably and efficiently operate in a wide range of high-speed or high-load applications across various industries.

roller bearing

How do roller bearings compare to other types of bearings, like ball bearings?

Roller bearings and ball bearings are two common types of bearings used in various applications. While both types serve the same purpose of facilitating smooth and efficient rotational motion, there are distinct differences between them. Here’s a detailed comparison of roller bearings and ball bearings:

  • Design and Construction:

Ball bearings have rolling elements in the shape of spheres (balls) sandwiched between an inner and outer raceway. The rolling elements make point contact with the raceways, distributing the load evenly. Roller bearings, on the other hand, have cylindrical or tapered rolling elements (rollers) that make line contact with the raceways. The line contact allows roller bearings to distribute higher loads over a larger surface area compared to ball bearings. Roller bearings can handle radial, axial, and combined loads more effectively, making them suitable for applications with heavy loads or high thrust forces.

  • Load Capacity:

Due to their design and larger contact area, roller bearings have a higher load-carrying capacity than ball bearings. The line contact of roller bearings allows them to distribute the load more evenly, reducing localized stresses. This makes roller bearings well-suited for applications that involve significant radial or axial loads, such as conveyor systems, heavy machinery, or automotive wheel bearings. Ball bearings, while having lower load capacity compared to roller bearings, are typically used in applications with lighter loads or high-speed requirements, such as electric motors, fans, and small machinery.

  • Friction and Speed:

Ball bearings generally have lower friction compared to roller bearings due to the point contact between the rolling elements and raceways. The lower friction results in reduced energy consumption and heat generation, making ball bearings more suitable for high-speed applications. Roller bearings, with their line contact, have slightly higher friction but offer better load distribution. However, advancements in bearing technology have led to the development of low-friction roller bearings, such as tapered roller bearings with optimized designs, for improved efficiency and reduced friction at high speeds.

  • Alignment and Misalignment:

Ball bearings are more forgiving when it comes to misalignment between the shaft and the housing. Their point contact allows for some angular misalignment without significantly affecting performance. Roller bearings, particularly spherical roller bearings, can also accommodate misalignment but to a lesser extent compared to ball bearings. Cylindrical roller bearings, on the other hand, are less forgiving and require precise alignment for optimal performance. Proper alignment is crucial for both types of bearings to ensure even load distribution and prevent premature wear or failure.

  • Application Specificity:

The choice between roller bearings and ball bearings depends on the specific application requirements. Roller bearings excel in heavy-duty applications where high load capacity and durability are essential. They are commonly used in industries such as mining, construction, and heavy machinery. Ball bearings, with their lower friction and suitability for high-speed operation, are preferred in applications that prioritize speed, precision, and efficiency, such as electric motors, machine tools, and automotive components.

In conclusion, roller bearings and ball bearings have distinct characteristics and are suitable for different types of applications. Roller bearings offer higher load capacity and better load distribution, making them ideal for heavy-duty applications. Ball bearings, with their lower friction and ability to accommodate misalignment, are well-suited for high-speed and precision applications. The choice between roller bearings and ball bearings depends on factors such as load requirements, speed, application specificity, and alignment considerations.

China Hot selling Auto Parts Front Rear Axle Wheel Hub Units Bearing Dac255242 Dac25520037 Dac28580042 Dac32720345 Dac38730040 Double Row Angular Contact Ball Roller Bearing   with Good qualityChina Hot selling Auto Parts Front Rear Axle Wheel Hub Units Bearing Dac255242 Dac25520037 Dac28580042 Dac32720345 Dac38730040 Double Row Angular Contact Ball Roller Bearing   with Good quality
editor by CX 2024-04-23

Roller Bearing

As one of the leading roller bearing manufacturers, suppliers, and exporters of mechanical products, We offer roller bearing and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of roller bearing.

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