China best 30308/30309/30310/30311/30312 Tapered Roller/thrust/china wholesale/Engine/motorcycle/tractor/linear guide/steel ball/Diesel generator sets/gear/1688 bearing deep groove ball bearing

Product Description

Product Parameters

Tapered Roller Bearing
Single Row Tapered Roller Bearing
Bearing No. dxDxTxBxC (mm) Weight(kg)   Bearing No. dxDxTxBxC (mm) Weight(kg)
35712 15 35 12 7 5 0.050    30302 15 42 14.25 13 11 0.098 
35713 17 40 13.25 12 11 0.080    30303 17 47 15.25 14 12 0.134 
35714 20 47 15.25 14 12 0.127    30304 20 52 16.25 16 13 0.176 
35715 25 52 16.25 15 13 0.154    30305 25 62 18.25 17 15 0.272 
35716 30 62 17.25 16 14 0.241    30306 30 72 20.75 19 16 0.408 
35717 35 72 18.25 17 15 0.344    30307 35 80 22.75 21 18 0.540 
35718 40 80 19.75 18 16 0.435    30308 40 90 25.25 23 20 0.769 
35719 45 85 20.75 19 16 0.495    30309 45 100 27.25 25 22 1.571 
35710 50 90 21.75 20 17 0.563    3571 50 110 29.25 27 23 1.310 
35712 60 110 23.75 22 19 0.949    3571 55 120 31.5 29 25 1.660 
35713 65 120 24.75 23 20 1.180    3571 65 140 36 33 28 2.550 
35714 70 125 26.25 24 21 1.260    3571 70 150 38 35 30 3.060 
35715 75 130 27.25 25 22 1.410    3571 75 160 40 37 31 3.570 
35716 80 140 28.25 26 22 1.720    3 0571 80 170 42.5 39 33 4.410 
35717 85 150 30.5 28 24 2.140    3 0571 85 180 44.5 41 34 5.200 
35718 90 160 32.5 30 26 2.660    3 0571 90 190 46.5 43 36 6.030 
35719 95 170 34.5 32 27 3.070    3571 95 200 49.5 45 38 6.980 
35710 100 180 37 34 29 3.780    30320 100 215 51.5 47 39 8.560 
31305 25 62 18.25 17 13 0.284                 
31306 30 72 20.75 19 14 0.398                 
31307 35 80 22.75 21 15 0.530                 
31308 40 90 25.25 23 17 0.738                 
31311 55 120 31.5 29 21 1.590                 
31313 65 140 36 33 23 2.420                 
31314 70 150 38 35 25 2.920                 
31315 75 160 40 37 26 3.470                 
31316 80 170 42.5 39 27 4.110                 
31317 85 180 44.5 41 28 4.850                 
31318 90 190 46.5 43 30 5.660                 
31320 100 215 56.5 51 35 8.670                 

01 Roller Bearing

Cylindrical Roller Bearings Spherical Roller Bearings
Taper Roller Bearings Needle Roller Bearings

02 Applications

Main Applications
Automobile Others
Front Wheel Machine Tool Spindles
Rear Wheel Construction Machinery
Gearbox Large Agricultural Machinery
Differential Pinion Shaft Railroad Vehicle Gear Reducers
  Mill Spokes And Reducers
***Suitable for Heavy Loads and Shock Loads***


Packaging & Shipping


Company Profile

About Us
Focus on a variety of industries
Provide maintenance solutions
Optimize customer inventory and reduce cost

What We Do
Comprehensive product range:

– Bearings
– Oil seals, Transmission belt
– Chain and Sprocket
– Hub assembly & Wheel bearings
– Coupling, castings
– Linear motion

Our Advantages

1. We have the most advanced bearing process equipment, CNC automatic facilities, and testing instruments.
2. We manufacture ball bearings and mounted bearing units, and also provide a strong full range of products, including electric motors and components One-stop partnerships products from our audited supply chain.
3. All products are manufactured exclusively by companies with ISO 9001:2008 certified Quality Systems which use state-of-the-art machines. The quality path starts from the beginning to deliver and goods’ quality trackable


Advanced Automatic Lines Comprehensive Range
Premium Quality Sustainability

Our Values
Behavior-based, service-oriented, focused on results and committed to continuous improvement

To be a leader in providing the best valuable (Reasonable cost, Reliable quality) supply of precision rollers.
Providing this value, will help our customers remain competitive in the global marketplace.

Please see detailed introduction about our manufacturing process and measuring process.

Advantage Manufacturing Processes and Quality Control:
01Heat Treatment
02 Centerless Grinding Machine 11200 (most advanced)
03 Automatic Production Lines for Raceway
04 Automatic Production Lines for Raceway
05 Ultrasonic Cleaning of Rings
06 Automatic Assembly
07 Ultrasonic Cleaning of Bearings
08 Automatic Greasing, Seals Pressing
09Measurement of Bearing Vibration (Acceleration)
10 Measurement of Bearing Vibration (Speed)
11 Laser Marking
12 Automatic Packing


Quality Warranty

Granville as a manufacturer of high quality products, guarantees compliance with the highest standards relative to the use of the best steel quality in the production process, the highest standards in the design of contact surfaces, as well as the most efficient packing and lubrication of parts. From material coming, quality control through all processes. Except interal test, goods to third party inspection if required. After the center of inspection and experiment being founded, effective methods of inspecting all kinds of raw materials are mastered and then the reliability of bearings is ensured. One of our main objectives is the continued improvement in the quality of our products and processes, in pursuit of which we obtained ISO certification 9001:2008 and TS16949. 

After Sales Service

  1. Optimize customer inventory and reduce cost
  2. Provide maintenance solutions



Q1.Can you accept OEM and customization?
A: Yes. We can customize it according to the samples and drawings you provide.

Q2.Do you keep a stock of these things?
A: In stocks

Q3.Can you provide samples free of charge?
A: Yes. We can provide samples free of charge. But the freight is paid by the customer.

Q4.What’s the delivery date?
A:The delivery time of sample orders is 3 working days.The bulk orders are 5-10 working days.

Q5: Why your price is higher than others?
A: Price = quality . We firmly believe that by the quality of the customer is always get more reliable than on price . So we insist on doing high-quality products.

Q6:What kind of transport do you have ?
A: According to the weight,we will choose the most appropriate mode of transport for you. Our freight forwarding is efficient and cheap.

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Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Small and Medium-Sized (60-115mm)
US$ 0/Piece
1 Piece(Min.Order)


Order Sample

Sample unit price depends on the specific model


Customized Request

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Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

linear bearing

Considerations for Selecting the Right Type and Size of Linear Bearing

Choosing the appropriate type and size of linear bearing requires careful consideration of various factors to ensure optimal performance and compatibility with the application. Here are important considerations to keep in mind:

  • 1. Load Capacity:

Determine the maximum load the linear bearing will need to support. Consider both static and dynamic loads to select a bearing that can handle the expected weight and forces.

  • 2. Speed and Acceleration:

Assess the required speed and acceleration of the linear motion. Different linear bearing types have different speed limitations, so choose one that can accommodate the desired motion profile.

  • 3. Precision and Accuracy:

If your application requires precise positioning, choose linear bearings that offer high accuracy and repeatability. Linear ball bearings are known for their precision, while linear roller bearings offer higher load capacity.

  • 4. Environment:

Consider the operating environment, including temperature, humidity, dust, and potential exposure to chemicals. Select linear bearings that are designed to withstand the specific environmental conditions.

  • 5. Rail or Shaft Compatibility:

Ensure that the chosen linear bearing is compatible with the rail or shaft you intend to use. Proper fit and alignment are crucial for smooth motion and long bearing life.

  • 6. Space Constraints:

If your application has limited space, choose compact linear bearings that can fit within the available area without compromising performance.

  • 7. Maintenance Requirements:

Consider the level of maintenance your application can accommodate. Some linear bearings are self-lubricating, reducing the need for frequent maintenance.

  • 8. Noise Level:

For noise-sensitive environments, opt for linear bearings that provide quiet operation to avoid disruptions caused by excessive noise.

  • 9. Mounting Options:

Consider how the linear bearing will be mounted and integrated into your system. Different bearings may require specific mounting configurations.

  • 10. Cost and Budget:

Balance the desired features and performance with your budget constraints. While high-performance linear bearings may offer advanced features, they can also come at a higher cost.

By carefully evaluating these factors, you can choose the most suitable type and size of linear bearing for your specific application. Consulting with bearing manufacturers and engineers can also provide valuable insights to ensure the optimal selection.

linear bearing

Advancements in Linear Bearing Technology

Recent years have witnessed significant advancements in linear bearing technology, leading to improved performance and expanded applications. Some notable advancements include:

  • Rolling Element Innovations:

Manufacturers are introducing new types of rolling elements, such as ceramic balls and specialized coatings, to enhance load capacity, reduce friction, and extend the lifespan of linear bearings.

  • Lubrication Solutions:

Advanced lubrication techniques, including self-lubricating materials and greases with extended lifetimes, are being developed to optimize the performance of linear bearings while reducing maintenance needs.

  • Smart and Sensor-Integrated Bearings:

Linear bearings with built-in sensors provide real-time data on temperature, vibration, and wear. This enables predictive maintenance, early fault detection, and optimization of bearing performance.

  • Improved Corrosion Resistance:

New materials and coatings are being employed to enhance the corrosion resistance of linear bearings. This is particularly beneficial in environments where exposure to moisture and corrosive substances is a concern.

  • Reduced Friction and Energy Consumption:

Advanced engineering and design techniques are leading to lower friction coefficients and reduced energy consumption in linear bearings. This not only improves efficiency but also contributes to sustainability efforts.

  • High-Speed Capabilities:

Linear bearings capable of operating at higher speeds are being developed to meet the demands of applications requiring rapid and precise movements, such as in the semiconductor and electronics industries.

  • Enhanced Sealing and Contaminant Management:

New sealing technologies are being employed to provide better protection against contaminants and debris. This is critical for applications where cleanliness is paramount.

  • Integration with Industry 4.0:

Linear bearings are increasingly designed to be compatible with Industry 4.0 principles, allowing them to be integrated into digital manufacturing and automation systems for improved overall efficiency.

  • Material Advancements:

Novel materials with improved mechanical properties, wear resistance, and temperature tolerance are being used in the production of linear bearings, expanding their operating capabilities.

These recent advancements in linear bearing technology are enabling industries to achieve higher levels of precision, efficiency, reliability, and predictive maintenance, making linear bearings an essential component of modern machinery and systems.

linear bearing

Linear Bearings: Definition and Applications

Linear bearings are mechanical components designed to facilitate smooth and controlled linear motion in a single direction. They are widely used across various industries to provide precise movement and guidance in applications where traditional rotary bearings are not suitable. Linear bearings offer several advantages and find use in a diverse range of applications:

  • Precision Machinery:

Linear bearings are a fundamental part of precision machinery such as CNC machines, laser cutting equipment, and coordinate measuring machines. They ensure accurate movement and positioning of tools and components, enabling high-quality and intricate work.

  • Industrial Automation:

In automated manufacturing and assembly lines, linear bearings play a critical role in moving robotic arms, conveyors, and various stages along predefined paths. Their ability to provide smooth and repeatable motion contributes to increased production efficiency.

  • Medical Devices:

Linear bearings are essential in medical devices like diagnostic machines, imaging systems, and robotic surgical equipment. They enable precise movement and positioning required for accurate diagnoses and minimally invasive procedures.

  • Packaging Machinery:

In packaging industries, linear bearings guide the motion of conveyor belts, sealing mechanisms, and labeling devices. These bearings ensure consistent and reliable packaging processes.

  • Material Handling:

Linear bearings are used in various material handling equipment such as pick-and-place systems, automated warehouses, and sorting machines. They enable efficient movement of goods and materials with reduced friction and wear.

  • Semiconductor Manufacturing:

In semiconductor fabrication, where extreme precision is crucial, linear bearings are employed in wafer handling, chip assembly, and inspection equipment. They ensure contamination-free motion and positioning of delicate components.

  • Textile Machinery:

Textile machines use linear bearings for guiding yarn paths, thread tensioning, and controlling the movement of fabric during weaving and knitting. These bearings contribute to the quality and efficiency of textile production.

  • Automotive Manufacturing:

Linear bearings are found in automotive assembly lines for tasks such as welding, painting, and component installation. They provide accurate movement and positioning of vehicle parts, contributing to the production process.

  • Aerospace and Defense:

In aerospace applications, linear bearings are used in various mechanisms, including aircraft seats, control surfaces, and satellite deployment systems. Their reliability and precision are crucial in these demanding environments.

  • Renewable Energy:

In wind turbines and solar panel manufacturing, linear bearings are used to adjust the positioning of blades, solar panels, and tracking systems. They contribute to the efficiency of renewable energy generation.

Overall, linear bearings offer precise, controlled, and smooth linear motion in diverse applications across industries. Their ability to guide and support loads while minimizing friction and wear makes them essential components for achieving accurate movement and improved operational efficiency.

China best 30308/30309/30310/30311/30312 Tapered Roller/thrust/china wholesale/Engine/motorcycle/tractor/linear guide/steel ball/Diesel generator sets/gear/1688 bearing   deep groove ball bearingChina best 30308/30309/30310/30311/30312 Tapered Roller/thrust/china wholesale/Engine/motorcycle/tractor/linear guide/steel ball/Diesel generator sets/gear/1688 bearing   deep groove ball bearing
editor by CX 2024-04-09