China manufacturer Hot Sale Original Tapered Roller Bearing 32207 32218 for Auto bearing bronze

Product Description


Haisai bearing is a regular model industrial manufacturing enterprise integrating bearing product research and development, design, manufacturing, import and export trade. The company was founded in 1998, covers an area of more than 90,000 square meters, plant area of more than 20,000 square meters, more than 200 employees, more than 20 technical engineers, has passed the international/SO9001:2008,1SO/TS16949:2009 and other quality management system certification. In addition, we have 2 factories (located in ZheJiang and HangZhou respectively) and a trading company. We have completed the high-speed forging of bearing steel dock, automatic high-precision grinding, cryoquenching, unitized automatic constant temperature grinding, intelligent assembly and so on, complete profession production. The product size from 30mm-750mm covers single and double row tapered roller bearing, British garden taper roller bearing, deep groove ball bearing, stainless steel shaft reducer special bearings, agricultural equipment bearings, a total of more than 2500 specifications of products.
We have a professional team of excellent quality, the technical center is equipped with all kinds of testing machines, high-precision testing instruments,material analysis instruments and more than 60 sets, for users to design develop, trial-produce all kinds of special purpose bearings, and do our best to provide high-end customers around the world with the best solutions and good after-sales service!
We has many years of experience in the industrial field of bearing supporting and industrial service, the products are exported to the United States, Germany, Italy, France, the Czech Republic, Russia and other European and American countries and supporting enterprises. We both at home and abroad enjoy a good business reputation!
We promise to be responsible for every set of bearings and industrial products sold! Make every customer satisfied, is our constant pursuit!


Tapered roller bearings are made up of 4 interdependent components: The inner ring, or cone; the tapered

rollers, or rolling elements; the roller retainer, or cage(collectively known as the cone assembly); and an outer

race, or cup. They are designed and manufactured to ensure that their conical rollers and raceways are arranged

so that their contact surfaces converge at a common apex on the bearing’s axis. The larger this contact angle the

greater the bearing’s loading capacity.

The angular construction of single row tapered roller bearings provides a high capacity for radial, axial, and

combined loads.Tapered roller bearings have window-type pressed steel cage with no marking. Others types

could be specifically designed on request.


Dimensional Stability

Long Life Even In Contaminated Lubricant

Durable Steel Cage

Typical Applications

Tapered roller bearings are used for heavy-duty, moderate speed applications. Typical applications that will

benefit from these durable bearings include:

Agriculture, Construction and Mining Equipment

Various Axle Systems

Conveyance Vehicles

Gear Box, Engine Motors, Reducers


WIDTH 40mm
WEIGHT 3.44kg




Q:What’s your after-sales service and warranty?
A: We promise to bear the following responsibilities when defective products were found:
1. Replacements would be sent with goods of your next order;
2. Refund for defective products if customers require.

Q:Do you accept ODM&OEM orders?
A: Yes, we provide ODM&OEM services to worldwide customers, we also customize OEM box and packing as your requirements.

Q:What’s the MOQ?
A: MOQ is 10pcs for standardized products; for customized products, MOQ should be negotiated in advance. There is no MOQ for sample orders.

Q:How long is the lead time?
A: The lead time for sample orders is 3-5 days, for bulk orders is 5-15 days.

Q:Do you offer free samples? 
A: Yes we offer free samples to distributors and wholesalers, however customers should bear freight. We DO NOT offer free samples to end users. 

Q:How to place order?
A: 1. Email us the model, brand and quantity,shipping way of bearings and we will quote our best price for you; 
2. Proforma Invoice made and sent to you as the price agreed by both parts; 
3. Deposit Payment after confirming the PI and we arrange production; 
4. Balance paid before shipment or after copy of Bill of Loading. /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Small and Medium-Sized (60-115mm)
Material: Bearing Steel
Spherical: Non-Aligning Bearings
Load Direction: Axial Bearing
US$ 0.73/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

roller bearing

How do roller bearings enhance the overall efficiency and functionality of machinery and equipment?

Roller bearings play a crucial role in enhancing the overall efficiency and functionality of machinery and equipment. They provide numerous benefits that contribute to improved performance, reliability, and longevity. Here’s a detailed explanation of how roller bearings enhance the efficiency and functionality of machinery and equipment:

  • Reduced Friction:

Roller bearings are designed to minimize friction between moving parts. They utilize rolling elements, such as cylindrical, spherical, or tapered rollers, to reduce contact area and enable smooth rolling motion. By reducing friction, roller bearings minimize energy losses, improve efficiency, and reduce heat generation. This allows machinery and equipment to operate with less resistance, resulting in improved overall efficiency.

  • Load Distribution:

Roller bearings are capable of distributing loads evenly across their rolling elements. This enables machinery and equipment to handle high loads without excessive stress on individual components. By distributing the load, roller bearings prevent localized wear and premature failure of critical parts. This leads to increased durability and reliability of the machinery or equipment, enhancing its overall functionality.

  • High-Speed Operation:

Roller bearings are designed to accommodate high rotational speeds. The rolling motion of the bearing elements reduces friction and allows for smooth operation even at high speeds. This is particularly important in applications such as electric motors, turbines, and automotive engines, where rapid rotation is required. By enabling high-speed operation, roller bearings enhance the efficiency and functionality of machinery and equipment in various industries.

  • Reduced Vibration and Noise:

Properly selected and installed roller bearings help reduce vibration and noise levels in machinery and equipment. They absorb and dampen vibrations caused by rotating or oscillating parts, resulting in smoother operation and reduced noise emissions. This is particularly important in precision applications, such as machine tools or medical equipment, where minimal vibration and noise are essential for accuracy and patient comfort.

  • Compact Design:

Roller bearings offer a compact design that allows for efficient use of space in machinery and equipment. They have a high load-carrying capacity relative to their size, enabling the design of more compact and lightweight systems. This is advantageous in applications where space constraints are a concern, such as in automotive, aerospace, or portable devices. The compact design facilitated by roller bearings enhances the functionality and versatility of the machinery or equipment.

  • Easy Installation and Maintenance:

Roller bearings are generally designed for ease of installation and maintenance. They are available in various configurations, including single-row, double-row, and multi-row designs, to accommodate different mounting arrangements. This simplifies the installation process and reduces downtime during maintenance or replacement. Additionally, roller bearings often have standardized dimensions and interfaces, making it easier to interchange them with compatible bearings when necessary.

In summary, roller bearings enhance the overall efficiency and functionality of machinery and equipment through reduced friction, load distribution, high-speed operation, vibration and noise reduction, compact design, and ease of installation and maintenance. By incorporating roller bearings into the design and operation of machinery and equipment, industries can achieve improved performance, reliability, and productivity, leading to enhanced operational efficiency and customer satisfaction.

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 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 manufacturer Hot Sale Original Tapered Roller Bearing 32207 32218 for Auto   bearing bronzeChina manufacturer Hot Sale Original Tapered Roller Bearing 32207 32218 for Auto   bearing bronze
editor by CX 2024-01-03

Roller Bearing

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