China Standard Custom Black Cross Roller Bearing Small Rotary Support Bearing for Robot connecting rod bearing

Product Description

We offer a wide variety of precision machining capabilities including high quality precision machined parts,
Mechanical assemblies,and cutom fabrication for automobile,textile machinery,construction machinery etc.
Our manufacturing and process capabilities are ISO9000 Certified.

Flexible thin section bearing realizes the extremely thin bearing section, and also realizes the miniaturization and lightweight of the products. The variety of products expands its application range. It is generally divided into rubber seal-rs, iron seal-zz, plane, iron card-k, copper card-m.


Characteristic of flexible thin section bearing



Shoulder dimension

Basic Load rating








ds  Dh





10 52 27.3 8 0.3 24 29.5 29 24 0.12


20 70 41.5 12 0.6 37 47 7.35 8.35 0.29


35 95 66 15 0.6 59 74 17.5 22.3 0.62


55 120 85 15 0.6 79 93 20.3 29.5 1


80 165 124 22 1 114 134 33.1 50.9 2.6


90 210 148 25 1.5 133 162 49.1 76.8 4.9


115 240 178 28 1.5 161 195 80.3 135 6.8


160 295 227.5 35 2 208 246 104 173 11.4
210 380 297.3 40 2.5 272 320 156 281 21.3
350 540 445.4 45 2.5 417 473 222 473 3504

Custom size requirement are also available


Our advantage:
1.The original 100% factory, more than 10 years’ production experience
2.Produce and process products according to your drawings and requirement.
3.All kinds of surface treatment available,such as anodizing,power coating,painting,polishing and etc.
4.Our professional R&D and QC team can strictily control the product quality to meet your requirement.
5.Our products are of high quality at cheap price,and delivered on time.

Manufacturing strength & Vehicle processing line

1.Professional operators

2.Adopting advanced CNC machine tools in Japan

3.Totally enclosed production workshop

4.Experienced managers

5.Digital control production line

6.Advanced level of technology



Production Detection

1.Complete testing facilities

2.Perfect measurement methods

3.Perfect production detection methods

4.Strong QC team,conduct comprehensive quality control

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Standard or Nonstandard: Customized
Feature: High Speed
Sealing Gland: Customized
Rolling-Element Number: Customized
Roller Type: Customized
Material: Customized
US$ 0/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

roller bearing

Can you provide guidance on the selection and sizing of roller bearings for specific applications?

Yes, I can provide guidance on the selection and sizing of roller bearings for specific applications. Choosing the right roller bearing involves considering various factors such as load requirements, speed, operating conditions, and environmental factors. Proper sizing ensures optimal performance, reliability, and longevity of the bearing in the intended application. Here’s a detailed explanation of the steps involved in selecting and sizing roller bearings:

  1. Identify the Application Requirements:

Start by identifying the specific requirements of the application. Consider factors such as the type and magnitude of the load, operating speed, temperature, and any environmental conditions (e.g., presence of moisture, dust, or chemicals). Understanding these requirements helps in selecting a roller bearing that can withstand the application’s demands.

  1. Determine the Load:

Calculate the load the bearing will be subjected to in the application. This includes both radial and axial loads. Consider static loads (steady loads) and dynamic loads (loads that vary with time). Additionally, factor in any shock or impact loads that may occur. Determining the load is crucial for selecting a bearing with the appropriate load capacity to avoid premature failure.

  1. Select the Bearing Type:

Based on the application requirements and load calculations, choose the appropriate type of roller bearing. Common types include cylindrical roller bearings, spherical roller bearings, tapered roller bearings, and needle roller bearings. Each type has specific design features suited for different load and operating conditions. Consulting bearing manufacturer catalogs or working with application engineers can help in identifying the most suitable bearing type.

  1. Calculate the Bearing Size:

Once the bearing type is determined, calculate the required bearing size. This involves considering factors such as the bearing’s rated load capacity, speed rating, and the calculated load from the application. The bearing size should be chosen to ensure that the calculated load falls within the bearing’s rated load capacity. Additionally, consider the desired service life, which can be influenced by factors such as lubrication, operating temperature, and reliability requirements.

  1. Consider Mounting and Clearance:

Take into account the mounting arrangement and the required clearance for the bearing. Consider factors such as shaft and housing tolerances, fits, and the need for axial or radial clearance. Proper mounting and clearance ensure that the bearing operates smoothly and minimizes the risk of excessive heat generation, premature wear, or bearing damage.

  1. Consider Lubrication and Sealing:

Evaluate the lubrication requirements and sealing options for the application. Proper lubrication is essential for reducing friction, dissipating heat, and preventing premature wear. Consider the lubrication method (grease or oil), frequency of lubrication, and the compatibility of the lubricant with the operating conditions. Additionally, assess the need for sealing to protect the bearing from contaminants and ensure reliable operation in the application environment.

  1. Consult Manufacturers and Application Engineers:

When in doubt or dealing with complex applications, it is recommended to consult bearing manufacturers or application engineers. They can provide technical expertise, access to bearing selection software, and additional guidance specific to the application’s requirements. Manufacturers and engineers can consider factors beyond basic selection and sizing, such as special operating conditions, customization options, and optimization for performance and reliability.

Proper selection and sizing of roller bearings are critical for ensuring optimal performance and reliability in specific applications. By following these steps and seeking expert advice when needed, you can choose the right roller bearing that meets the demands of your application and maximizes the lifespan of your machinery or equipment.

roller bearing

Are there specific industries or applications where roller bearings are frequently used?

Roller bearings are widely used in various industries and applications where there is a need for efficient load support, smooth rotation, and reliable performance. The versatility and effectiveness of roller bearings make them suitable for a wide range of machinery and equipment. Here’s a detailed explanation of the specific industries and applications where roller bearings are frequently used:

  • Automotive Industry:

The automotive industry extensively relies on roller bearings for numerous applications. They are commonly used in wheel hubs, transmissions, engines, differentials, and steering systems. Roller bearings provide support and facilitate smooth rotation in these critical automotive components, ensuring optimal performance and durability.

  • Aerospace Industry:

In the aerospace industry, roller bearings are crucial for various applications, including aircraft engines, landing gear systems, actuation systems, and control surfaces. The high load-carrying capacity and reliability of roller bearings make them suitable for withstanding the extreme operating conditions and demands of the aerospace industry.

  • Industrial Machinery:

Roller bearings find extensive use in industrial machinery across multiple sectors. They are commonly employed in machine tools, conveyors, pumps, compressors, electric motors, and power generation equipment. Roller bearings contribute to efficient power transmission, reduced friction, and smooth operation in these industrial applications.

  • Construction and Mining:

In the construction and mining industries, roller bearings are frequently utilized in equipment such as excavators, loaders, bulldozers, crushers, and drilling machines. These bearings are designed to withstand heavy loads, shock loads, and harsh environmental conditions commonly encountered in construction and mining operations.

  • Railways and Transportation:

Roller bearings play a vital role in the railway and transportation sector. They are widely used in locomotives, train wheels, axles, gearboxes, and suspension systems. Roller bearings ensure smooth and reliable operation of railway vehicles, withstand heavy loads, and contribute to the overall safety and efficiency of the transportation industry.

  • Energy and Power Generation:

In the energy and power generation sector, roller bearings are commonly employed in turbines, generators, wind turbines, and hydroelectric power plants. They provide support and facilitate smooth rotation in rotating machinery, contributing to efficient energy generation and transmission.

  • Medical and Healthcare:

Roller bearings are also used in medical and healthcare equipment, such as medical scanners, imaging devices, dental drills, and surgical instruments. These bearings enable precise and smooth movement, ensuring accurate diagnostics and reliable performance in medical applications.

Additionally, roller bearings find applications in a wide range of other industries, including agriculture, food and beverage processing, material handling, printing and packaging, textile machinery, and many more. Their versatility, load-carrying capacity, and ability to withstand diverse operating conditions make roller bearings essential components in numerous industrial and commercial applications.

roller bearing

What are roller bearings, and how are they used in various mechanical applications?

Roller bearings are mechanical components designed to facilitate smooth and efficient rolling motion between two surfaces. They consist of cylindrical or tapered rollers placed between inner and outer raceways, which are typically in the form of rings or tracks. Roller bearings are widely used in various mechanical applications where there is a need to support radial or axial loads and reduce friction. Here’s a detailed explanation of roller bearings and their diverse applications:

Types of Roller Bearings:

There are several types of roller bearings, each designed to accommodate specific load types and operating conditions:

  • Cylindrical Roller Bearings: These bearings feature cylindrical rollers that distribute loads evenly over a larger surface area. They are suitable for high radial loads and moderate axial loads and often used in applications such as electric motors, gearboxes, pumps, and machine tools.
  • Tapered Roller Bearings: Tapered roller bearings consist of tapered rollers and raceways that are angled to handle both radial and axial loads. They are commonly used in automotive applications, such as wheel bearings, transmissions, and differential gears, as well as in heavy machinery and equipment.
  • Spherical Roller Bearings: Spherical roller bearings have barrel-shaped rollers that align themselves with the outer raceway, allowing them to accommodate misalignment and shaft deflection. They are commonly used in applications with high radial loads and moderate axial loads, such as conveyor systems, mining equipment, and vibrating screens.
  • Needle Roller Bearings: Needle roller bearings have long, thin rollers with a high length-to-diameter ratio. They are designed to handle high radial loads in limited spaces and are commonly used in applications such as automotive transmissions, industrial gearboxes, and small appliances.
  • Thrust Roller Bearings: Thrust roller bearings are designed to handle axial loads and provide high thrust capacity in one direction. They consist of cylindrical or tapered rollers arranged in a cage and are used in applications such as automotive transmissions, crane hooks, and large-scale machinery.

Applications of Roller Bearings:

Roller bearings find extensive use in a wide range of mechanical applications due to their ability to support heavy loads, reduce friction, and provide smooth rotational motion. Some notable applications include:

  • Automotive Industry: Roller bearings are widely used in automotive applications, including wheel bearings, transmissions, differentials, and engines. They provide support for radial and axial loads, enable smooth rotation, and contribute to overall vehicle performance and reliability.
  • Industrial Machinery: Roller bearings are essential components in various industrial machinery and equipment. They are used in gearboxes, electric motors, pumps, conveyors, printing presses, and machine tools, among others. Roller bearings provide reliable and efficient operation, reducing friction and enabling high-speed and heavy-load capabilities.
  • Aerospace and Aviation: Roller bearings are critical in aerospace and aviation applications, where they are used in aircraft engines, landing gear systems, control surfaces, and helicopter rotor systems. They must meet stringent performance and reliability requirements in extreme operating conditions.
  • Construction and Mining: Roller bearings are employed in construction and mining equipment, such as excavators, bulldozers, cranes, and rock crushers. They provide robust support for heavy loads, withstand harsh environments, and contribute to the durability and performance of these machines.
  • Energy and Power Generation: Roller bearings are used in power generation equipment, including turbines, generators, and wind turbines. They enable smooth rotation, handle high loads, and contribute to the efficiency and reliability of energy production systems.
  • Railways and Transportation: Roller bearings play a crucial role in railway applications, including locomotives, passenger cars, and freight wagons. They provide support for wheels, axles, and suspension systems, ensuring safe and reliable operation under dynamic loads and varying operating conditions.
  • Medical Equipment: Roller bearings are used in various medical equipment, such as MRI machines, X-ray scanners, and surgical instruments. They provide precise and smooth motion in critical applications, contributing to the accuracy and reliability of medical procedures.

These are just a few examples of the extensive use of roller bearings in various mechanical applications. The versatility, load-carrying capacity, and efficiency of roller bearings make them essential components in numerous industries, where they contribute to the performance, durability, and reliability of machinery and equipment.

China Standard Custom Black Cross Roller Bearing Small Rotary Support Bearing for Robot   connecting rod bearingChina Standard Custom Black Cross Roller Bearing Small Rotary Support Bearing for Robot   connecting rod bearing
editor by CX 2024-05-08

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.

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