Product Description
Linear Ball Bearing
LM20UU
Specification
| Model No. | Ball rows |
Main | ||||||||
| Standard type | Clearance-adjustable type |
Open type | Inscribed bore diameter | Outer diameter | Length | |||||
| dr | Tolerance | D | Tolerance high predision |
L | Tolerance | |||||
| High | Precision | |||||||||
| LM 3 | 4 | 3 | 0 -0.008 |
0 -0005 |
7 | 0 -0.009 |
10 | 0 -0.12 |
||
| LM 4 | 4 | 4 | 0 -0.008 |
0 -0005 |
8 | 0 -0.009 |
12 | 0 -0.12 |
||
| LM 5 | 4 | 5 | 0 -0.008 |
0 -0005 |
10 | 0 -0.009 |
15 | 0 -0.12 |
||
| LM 6 | LM 6 AJ | 4 | 6 | 0 -0.009 |
0 -0.006 |
12 | 0 -0.011 |
19 | 0 -0.2 |
|
| LM 8S | LM 8S AJ | 4 | 8 | 0 -0.009 |
0 -0.006 |
15 | 0 -0.011 |
17 | 0 -0.2 |
|
| LM 8 | LM 8 AJ | 4 | 8 | 0 -0.009 |
0 -0.006 |
15 | 0 -0.011 |
24 | 0 -0.2 |
|
| LM 10 | LM 10 AJ | 4 | 10 | 0 -0.009 |
0 -0.006 |
19 | 0 -0.013 |
29 | 0 -0.2 |
|
| LM 12 | LM 12 AJ | 4 | 12 | 0 -0.009 |
0 -0.006 |
21 | 0 -0.013 |
30 | 0 -0.2 |
|
| LM 13 | LM 13 AJ | LM13 OP | 4 | 13 | 0 -0.009 |
0 -0.006 |
23 | 0 -0.013 |
32 | 0 -0.2 |
| LM 16 | LM 16 AJ | LM16 OP | 5 | 16 | 0 -0.009 |
0 -0.006 |
28 | 0 -0.013 |
37 | 0 -0.2 |
| LM 20 | LM 20 AJ | LM20 OP | 5 | 20 | 0 -0.571 |
0 -0.007 |
32 | 0 -0.016 |
42 | 0 -0.2 |
| LM 25 | LM 25 AJ | LM25 OP | 6 | 25 | 0 -0.571 |
0 -0.007 |
40 | 0 -0.016 |
59 | 0 -0.3 |
| LM 30 | LM 30 AJ | LM30 OP | 6 | 30 | 0 -0.571 |
0 -0.007 |
45 | 0 -0.016 |
64 | 0 -0.3 |
Detailed Photos
Packaging & Shipping
After Sales Service
FAQ
Why our bearing is better than other?
Material
We usually use bearing steel (GCr15), but many manufacturers only use softer carbon steel materials, so our bearings have higher hardness and longer service life.
Heat treatment
We have our own heat treatment plant and do not need to be outsourced. We use a slower speed and more stable temperature to effectively control the steel and increase the toughness and life of the steel.
Other small-scale bearing companies usually need to outsource. Many outsourcing factories only strengthen the hardness of the bearing surface due to cost factors, but the hardness inside is not enough, which is the reason why many bad bearings are easy to crack.
Precision
Our bearings can be controlled at a height accuracy of 0~-0.004mm, fast speed and smoothness.
Multiple grinding process
We grind the bearing many times, but others may grind it only once, so the chamfer of our bearing is very smooth.
In conclusion
We use high-quality materials and multiple grinding processes, so our bearings have the characteristics of high speed, low noise,high precision and long life.
Quality guarantee
we give our customers 1 year quality warrantee for the bearings.
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| Feature: | High Speed |
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| Function: | Ordinary |
| Flange Shape: | Without Flange |
| Samples: |
US$ 1/Piece
1 Piece(Min.Order) | Order Sample |
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| Customization: |
Available
| Customized Request |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Challenges and Solutions for Addressing Friction and Wear in Linear Bearings
Friction and wear are common challenges in linear bearings that can impact their performance and lifespan. Here are the challenges and some solutions to address them:
- 1. Challenge: Friction:
Friction between the bearing components can lead to increased energy consumption, heat generation, and reduced efficiency.
- Solution: Lubrication:
Proper lubrication is essential to minimize friction. Lubricants reduce the contact between moving parts, allowing smoother motion and reducing wear. Choosing the right lubricant and applying it correctly can significantly mitigate friction-related issues.
- 2. Challenge: Wear:
Continuous movement can lead to wear on the bearing surfaces, affecting precision and performance over time.
- Solution: Regular Maintenance:
Implementing a regular maintenance schedule can help monitor wear and replace worn components before they compromise performance. This includes cleaning, re-lubrication, and periodic inspection of the bearing’s condition.
- 3. Challenge: Contaminants:
Dust, debris, and foreign particles can enter the bearing system, leading to increased friction and accelerated wear.
- Solution: Sealing and Protection:
Using seals, covers, or protective enclosures can help prevent contaminants from entering the bearing system. These protective measures maintain the integrity of the lubricant and extend the bearing’s lifespan.
- 4. Challenge: Improper Installation:
If linear bearings are not installed correctly, misalignment and uneven load distribution can contribute to friction and wear.
- Solution: Precise Installation:
Follow manufacturer guidelines for proper installation, ensuring accurate alignment and even load distribution. This reduces the risk of premature wear and ensures optimal performance.
- 5. Challenge: Inadequate Lubrication:
If the linear bearings are under-lubricated or over-lubricated, it can lead to increased friction and wear.
- Solution: Lubrication Management:
Monitor and manage lubrication levels to ensure they are within the recommended range. Regularly assess the lubricant’s condition and replenish as needed to maintain optimal performance.
- 6. Challenge: High Loads and Speeds:
High loads and speeds can increase friction and wear on linear bearings.
- Solution: Proper Selection:
Select linear bearings that are designed to handle the specific loads and speeds of the application. This ensures that the bearings can operate effectively under the given conditions.
Addressing friction and wear challenges in linear bearings requires a combination of proper maintenance practices, appropriate lubrication, protective measures, and careful selection of bearings. By implementing these solutions, the performance and longevity of linear bearings can be optimized.
Enhancing 3D Printers and Additive Manufacturing with Linear Bearings
Linear bearings play a crucial role in the efficient and precise operation of 3D printers and additive manufacturing processes. Here’s how they contribute to these technologies:
- Precise Motion Control:
Linear bearings provide smooth and accurate linear motion control, ensuring precise positioning of the print head or build platform. This precision is essential for creating intricate and detailed 3D printed objects.
- High Repeatability:
Linear bearings offer high repeatability, enabling the printer to consistently recreate complex geometries layer by layer. This is crucial for producing parts with consistent quality and dimensions.
- Reduced Vibration and Wobble:
The smooth motion provided by linear bearings minimizes vibrations and wobbling during printing, leading to smoother surface finishes and improved print quality.
- High-Speed Printing:
Linear bearings can handle high speeds, allowing 3D printers to operate at faster print speeds without sacrificing accuracy. This is beneficial for reducing overall print time.
- Compact Design:
Many linear bearings have a compact and space-efficient design, which is important for fitting within the confined spaces of 3D printers while maintaining the required range of motion.
- Low Friction and Wear:
Linear bearings are designed to minimize friction and wear, leading to longer lifespan and reduced maintenance requirements. This is especially important in additive manufacturing where continuous operation is desired.
- Smooth Layer-by-Layer Building:
In additive manufacturing, linear bearings enable precise movement of the build platform or print head, ensuring that each layer is accurately aligned and built upon the previous layer.
- Complex Geometries:
Linear bearings enable 3D printers to create complex and intricate geometries that require precise control over the movement of the print head and build platform.
Overall, linear bearings contribute to the success of 3D printing and additive manufacturing by providing the necessary motion control, precision, and reliability needed to create high-quality and intricate 3D printed objects.
Common Applications and Industries for Linear Bearings
Linear bearings find widespread use in a variety of applications and industries due to their ability to provide controlled linear motion. Some common applications and industries where linear bearings are essential components include:
- Industrial Automation:
Linear bearings are used in automated machinery and equipment to enable precise and repeatable movement of components. They play a critical role in assembly lines, material handling systems, and robotics.
- CNC Machinery:
In computer numerical control (CNC) machines, linear bearings facilitate accurate movement of the cutting tool or workpiece. They contribute to the precision and quality of machining operations.
- Medical Devices:
Linear bearings are crucial in medical equipment such as MRI machines, CT scanners, and robotic surgical systems. Their precision and smooth motion are vital for accurate medical procedures.
- Packaging Machinery:
In packaging and labeling machines, linear bearings ensure precise movement of containers, products, and labeling mechanisms. This results in consistent and reliable packaging processes.
- Printing Industry:
Linear bearings are used in printing presses to ensure precise movement of print heads, paper feed mechanisms, and other critical components. This helps achieve accurate printing results.
- Textile Machinery:
In textile manufacturing, linear bearings contribute to the smooth operation of spinning machines, looms, and fabric handling systems. They help maintain proper tension and alignment of materials.
- Aerospace and Defense:
Linear bearings are utilized in aerospace applications such as aircraft actuators, landing gear systems, and satellite mechanisms. They withstand harsh conditions and provide reliable motion control.
- Material Handling:
In conveyor systems and material handling equipment, linear bearings facilitate the movement of goods along production lines, warehouses, and distribution centers.
- Automotive Industry:
Linear bearings are used in automotive manufacturing for tasks like seat adjustments, sunroof operation, and door mechanisms. Their precision enhances passenger comfort.
- Scientific Research:
In laboratory equipment and scientific instruments, linear bearings contribute to accurate positioning of samples, sensors, and analytical components.
These are just a few examples of the diverse applications and industries where linear bearings are essential. Their ability to provide controlled and reliable linear motion makes them indispensable in achieving precision, efficiency, and performance across various sectors.
editor by CX 2024-04-10