China Best Sales Factory Outlet Fast Delivery Self-Aligning Roller Bearing 804312A 534176 809281 BS2b248180 Mixer Truck Bearing carrier bearing

Product Description


Product Parameters

Product Name

Spherical Roller Bearing


roller bearing


Chrome Steel



Precision rating

Normal level/ P4/P5


Easy to replace and install, well sealed, suitable for high dust environment, multiple fixing methods are optional, and multiple
designs are used.

Delivery time

5-7 days,Related by order quantity


papermaking machinery, reduction gears, railway vehicle axles, rolling mill gearbox bearing housings, rolling mill rollers,
crushers, vibrating screens, printing machinery, woodworking machinery, various types of industrial reducers, vertical
self-aligning bearings


Box packing, industrial standard packing, individual box packing or as
customers’ requirement.


Company Profile

HangZhou CZPT BEARING Co., Ltd is specialized in bearings areas since 2013, we create an innovative sales service of bearings to satisfy diffierent kinds of application.

We are located in HangZhou city, ZHangZhoug province, China, near HangZhou and ZheJiang port, which has recognized by special ISO, with CE certificiate, The various bearings we produce there have been inspected and confirmed by SGS to be RoHS compliant.

We Registered “GNYAR” in 2014, registered “MAJC” in 2018, both was received in high-performance praise, and earned high reputation. Our products is widely used to mining machinery, motorcycle parts, agricultural machine, auto parts and embroidery machine spare parts, Power tools, bicycle, Semiconductor Facilities. Fitness Equipments, Toys, fishing, industrial using design, etc.

After years of development, we believe that by establishing a mutually beneficial relationship with our customers we can both continue to grow and prosper, we wish and hope to always grant you satisfaction.



Packaging & Shipping

You now have 3 measuring elements that will allow you to identify your bearing: the inside diameter (or bore), the outside diameter, and the thickness.

You can postpone these measurements in our bearing search tool on our



1.How many is the MOQ of your company?
   Our company MOQ is 1pcs.

2.Could you accept OEM and customize?
   YES, OEM is accepted and we can customize for you according to sample or drawing. 


3.How do you guaranee the quality?
Evaluate the samples and drawings before production
Eva;iate the production process,and following it in schedual,guarantee the delievery time in time.
Evaluate the bearing dimension,clearance,noise,rotations of final productions.
Evaluate the fause products,block it and make an improve action.


4.Do you have stocks?
   YES, we have most of the bearings showing on made in china in stock,please contact us for order details.


5.Do you have only Hubs Wheel Auto Bearing?

    YES,we have more others types bearings,ANY BEARING YOU CAN THINK OF NOW,WE HAVE!

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Customized: Customized
Standard Parts: Yes
Universal: Yes
Type: Bearing Roller
Material: Stainless Steel
Condition: New
US$ 1/Piece
1 Piece(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

Can you provide examples of machinery or equipment that rely on precision roller bearings?

Precision roller bearings are indispensable components in various machinery and equipment that require high accuracy, tight tolerances, and smooth operation. These bearings are designed to provide exceptional precision and reliability in demanding applications. Here are some examples of machinery and equipment that rely on precision roller bearings:

  • Machine Tools:

Precision roller bearings are extensively used in machine tools such as milling machines, lathes, grinding machines, and machining centers. These bearings ensure precise movement and positioning of the tooling components, enabling accurate cutting, shaping, and machining operations. The high precision and rigidity of roller bearings contribute to superior machining quality and dimensional accuracy.

  • Robotics:

In robotics applications, precision roller bearings are crucial for achieving accurate and repeatable motion control. They are used in robot joints, arms, and end-effectors to ensure precise movement, positioning, and load handling. Precision bearings enable robots to perform tasks with high accuracy and reliability, making them ideal for industrial automation, assembly lines, and advanced robotic systems.

  • Optical and Imaging Equipment:

Precision roller bearings are employed in optical and imaging equipment, including cameras, telescopes, microscopes, and precision measurement instruments. These bearings support the moving components, such as lenses, mirrors, and stages, ensuring smooth and precise positioning. The high precision and low runout of roller bearings contribute to sharp imaging, accurate measurements, and stable optical performance.

  • Coordinate Measuring Machines (CMMs):

CMMs are used for precise dimensional measurement and inspection in manufacturing and quality control processes. Precision roller bearings are utilized in the moving axes and probe systems of CMMs to provide accurate and repeatable positioning. These bearings enable CMMs to achieve precise measurements with tight tolerances, ensuring the accuracy and reliability of dimensional inspection.

  • Semiconductor Manufacturing Equipment:

In the semiconductor industry, precision roller bearings are critical in wafer handling, lithography systems, and other semiconductor manufacturing processes. They contribute to the precise alignment and movement of components, such as wafer stages, reticles, and masks. The high precision and low runout of roller bearings are essential for achieving the stringent dimensional requirements in semiconductor fabrication.

  • High-Speed Spindles:

Precision roller bearings are employed in high-speed spindles used in various applications, including CNC machining, milling, and grinding operations. These bearings enable the spindles to operate at high rotational speeds while maintaining exceptional precision and stability. Precision bearings ensure minimal vibration, runout, and heat generation, allowing for efficient and high-quality machining processes.

These examples represent just a few of the many machinery and equipment types that rely on precision roller bearings. Other applications include printing presses, textile machinery, medical devices, aerospace systems, and more. Precision roller bearings contribute to the overall performance, accuracy, and reliability of these systems, enabling advanced manufacturing, automation, and technological advancements.

roller bearing

How do roller bearings contribute to reduced friction and smooth rotation in machinery?

Roller bearings play a crucial role in reducing friction and ensuring smooth rotation in machinery. Their design and operating principles contribute to minimizing contact resistance and facilitating efficient motion. Here’s a detailed explanation of how roller bearings achieve reduced friction and smooth rotation:

  • Rolling Motion:

Roller bearings operate on the principle of rolling motion, where the rolling elements (rollers) roll between the inner and outer raceways. This rolling action produces significantly lower friction compared to sliding contact between surfaces. The rolling motion reduces the contact area between the rolling elements and the raceways, resulting in reduced frictional resistance. As a result, roller bearings experience less energy loss and generate less heat during operation, contributing to improved efficiency and reduced wear.

  • Lubrication:

Proper lubrication is essential for reducing friction and ensuring smooth rotation in roller bearings. Lubricants such as oil or grease are used to create a thin film between the rolling elements and raceways. This lubricating film separates the surfaces, minimizing direct metal-to-metal contact and reducing friction. Lubrication also helps to dissipate heat generated during operation and prevent wear and corrosion. Adequate lubrication ensures that roller bearings operate smoothly and with minimal resistance, promoting long service life and reliable performance.

  • Low Friction Materials:

The materials used in roller bearings are carefully selected to minimize friction and enhance performance. The rolling elements and raceways are typically made from high-quality bearing steels that have excellent hardness, strength, and wear resistance. These materials reduce friction and prevent premature wear, ensuring smooth rotation over an extended period. Additionally, the use of low-friction cage materials, such as brass or synthetic polymers, further reduces friction by minimizing frictional contact between the rolling elements and the cage.

  • Precision Manufacturing:

Roller bearings are manufactured with high precision to maintain consistent clearances and minimize internal friction. The dimensions and tolerances of the rolling elements, raceways, and other bearing components are tightly controlled during the manufacturing process. This precision ensures proper alignment and smooth operation of the bearing. By minimizing internal friction and maintaining precise clearances, roller bearings contribute to reduced energy loss and smooth rotation in machinery.

  • Sealing and Contamination Prevention:

Sealing mechanisms are often incorporated into roller bearings to protect them from external contaminants, such as dust, dirt, and moisture. Seals or shields prevent the ingress of contaminants into the bearing, which could increase friction and lead to premature wear. By maintaining a clean and lubricated environment, the seals contribute to reduced friction and ensure smooth rotation. Proper sealing also extends the service life of the bearing and reduces the need for frequent maintenance.

In summary, roller bearings achieve reduced friction and smooth rotation in machinery through their rolling motion, effective lubrication, the use of low-friction materials, precision manufacturing, and sealing mechanisms. By minimizing direct contact, employing efficient lubrication, and maintaining precise clearances, roller bearings optimize the efficiency, reliability, and performance of machinery, leading to smoother operation, reduced energy consumption, and extended service life.

China Best Sales Factory Outlet Fast Delivery Self-Aligning Roller Bearing 804312A 534176 809281 BS2b248180 Mixer Truck Bearing   carrier bearingChina Best Sales Factory Outlet Fast Delivery Self-Aligning Roller Bearing 804312A 534176 809281 BS2b248180 Mixer Truck Bearing   carrier bearing
editor by CX 2024-04-25

Roller Bearing

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