China best LM/ LME/LMB  Stainless/ Bearing Steel Linear Bearings(LM5UUAJ LM6UUAJ LM8UUAJ LM10UUAJ LM12UUAJ LM13UUAJ LM16UUAJ LM20UUAJ) bearing distributors

Product Description

Product Description

Linear bearing is a kind of linear motion system, which is used for the combination of linear stroke and cylindrical shaft. Because the bearing ball contacts with the bearing jacket point and the steel ball rolls with the minimum friction resistance, the linear bearing has less friction and is relatively stable. It does not change with the bearing speed, so it can obtain a smooth linear motion with high sensitivity and accuracy.

Linear bearings are more and more widely used in electronic equipment, food machinery, packaging machinery, medical machinery, printing machinery, textile machinery, machinery, instruments, robots, tools machinery, CNC machine tools, automotive and digital  and other precision equipment or special machinery industry.


Product Parameters

Type LM :  This is the metric dimension series used most frequently in Asia
Type LME : This is the metric dimension series used most frequently in Europe.
Type LMB : This is the inch dimension series used mainly in the USA.



Bearing No. Type Gap adjustment Opening Dimensions(mm)
Number of steel ball rows Weight(g) dr D L B W D1
LM3UU 4 1.4 3 7 10
LM4UU 4 1.9 4 8 12
LM5UU 4 4 LM5UUAJ 5 10 15 10.2 1.1 9.6
LM6UU 4 8 LM6UUAJ 6 12 19 13.5 1.1 11.5
LM8UU 4 16 LM8UUAJ 8 15 24 17.5 1.1 14.3
LM10UU 4 30 LM10UUAJ 10 19 29 22 1.3 18
LM12UU 5 31.5 LM12UUAJ LM12UUOP 12 21 30 23 1.3 20
LM13UU 5 43 LM13UUAJ LM13UUOP 13 23 32 23 1.3 22
LM16UU 5 69 LM16UUAJ LM16UUOP 16 28 37 26.5 1.6 27
LM20UU 5 87 LM20UUAJ LM20UUOP 20 32 42 30.5 1.6 30.5
LM25UU 6 220 LM25UUAJ LM25UUOP 25 40 59 41 1.85 38
LM30UU 6 250 LM30UUAJ LM30UUOP 30 45 64 44.5 1.85 43
LM35UU 6 390 LM35UUAJ LM35UUOP 35 52 70 49.5 2.1 49
LM40UU 6 585 LM40UUAJ LM40UUOP 40 60 80 60.5 2.1 57
LM50UU 6 1580 LM50UUAJ LM50UUOP 50 80 100 74 2.6 76.5
LM60UU 6 2000 LM60UUAJ LM6OUUOP 60 90 110 85 3.15 86.5
LM80UU 6 4520 LM80UUAJ LM8OUUOP 80 120 140 105.5 4.15 116
LM100UU 6 8600 LM100UUAJ LM100UUOP 100 150 175 125.5 4.15 145
LM120UU 8 15000 LM120UUAJ LM120UUOP 120 180 200 158.5 4.15 175


Packaging & Shipping

Our Advantages

1. We have over 10 years’ experience.
2. OEM or Non-Standard Bearings: Any requirement for Non-standard bearings is easily fulfilled by us due to our vast knowledge and links in the industry.
3. After Sales Service and Technical Assistance: Our company provides after-sales service and technical assistance as per the customer’s requirements and needs.
4. Quick Delivery: Our company provides just-in-time delivery with our streamlined supply chain.
5.We attend promptly to any customer questions. We believe that if our customers are satisfied then it proves our worth. Our customers are always given quick support.                              

Please contact us immediately if you have any questions.


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Feature: Corrosion Resistant, High Temperature
Function: Super
Series: LM/ LME/LMB
US$ 0.1/Piece
1 Piece(Min.Order)


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

linear bearing

Differences Between Linear Ball Bearings and Linear Roller Bearings

Linear ball bearings and linear roller bearings are two distinct types of linear bearings, each with its own design and characteristics. Here’s how they differ and when they are preferred:

  • 1. Design:

Linear ball bearings use ball bearings to provide rolling motion along the shaft. Linear roller bearings, on the other hand, use cylindrical or needle rollers for motion. Roller bearings have a larger contact area, distributing the load over a broader surface.

  • 2. Load Capacity:

Linear roller bearings typically have a higher load-carrying capacity compared to linear ball bearings. This makes them suitable for applications with heavier loads and greater force requirements.

  • 3. Friction and Smoothness:

Linear ball bearings offer lower friction and smoother motion due to the point contact between the balls and the shaft. Roller bearings may have slightly higher friction but can handle larger loads without sacrificing smoothness.

  • 4. Precision and Accuracy:

Linear ball bearings are often preferred for applications requiring high precision and accuracy. Their point contact provides precise positioning and repeatability, making them suitable for tasks like CNC machining and optical systems.

  • 5. Noise and Vibration:

Linear ball bearings tend to generate less noise and vibration due to their smoother rolling action. Roller bearings may produce slightly more noise but are still used in applications where noise is not a critical factor.

  • 6. Speed:

Linear ball bearings are well-suited for high-speed applications due to their low friction and smooth motion. Roller bearings are also capable of high speeds but may have slightly different characteristics.

  • 7. Cost:

Linear ball bearings are often more cost-effective for lower-load and precision applications. Linear roller bearings may be preferred for heavy-duty applications, which may justify their higher cost.

  • 8. Application Scenarios:

Linear ball bearings are commonly used in applications where precision, smooth motion, and accuracy are paramount, such as in CNC machinery, 3D printers, and optical systems. Linear roller bearings excel in applications with higher loads, such as heavy machinery, material handling, and industrial automation.

In summary, the choice between linear ball bearings and linear roller bearings depends on the specific requirements of the application. Each type has its strengths and weaknesses, and selecting the right type ensures optimal performance and longevity.

linear bearing

Role of Linear Bearings in Heavy Load and High Precision Applications

Linear bearings are essential components in applications that require the combined capabilities of handling heavy loads and maintaining high precision. They serve a critical role in such scenarios:

  • Heavy Load Handling:

Linear bearings are designed to support and guide heavy loads along a linear path. They distribute the weight evenly, reducing friction and wear on the moving components and ensuring smooth and stable movement.

  • Precision Motion Control:

Linear bearings enable precise and accurate control over the motion of heavy loads. This precision is crucial in applications where components need to be positioned or moved with extremely fine tolerances.

  • Reduced Friction:

Linear bearings are engineered to minimize friction between moving parts, even under heavy load conditions. This not only improves efficiency but also enhances the accuracy of movement.

  • Smooth Movement:

Linear bearings provide smooth and consistent movement, ensuring that heavy loads can be guided and positioned without jarring or sudden stops. This is particularly important for applications requiring controlled and gentle motion.

  • Reduced Wear and Maintenance:

By reducing friction and wear, linear bearings extend the operational lifespan of heavy-load equipment. This translates to lower maintenance requirements and longer intervals between servicing.

  • Optimized Performance:

Linear bearings contribute to the overall performance of heavy-load systems by allowing them to operate smoothly, accurately, and reliably. This is critical in applications where precision and consistency are paramount.

  • Wide Range of Industries:

Linear bearings find application in various industries, including manufacturing, aerospace, automotive, and heavy machinery, where heavy loads need to be moved with high precision.

Overall, linear bearings serve as a cornerstone in applications that demand the simultaneous management of heavy loads and precise movement. They ensure that heavy machinery and equipment can function efficiently and accurately while maintaining the safety and integrity of the entire system.

linear bearing

Factors to Consider When Selecting a Linear Bearing

Choosing the right linear bearing for a specific application involves considering several critical factors to ensure optimal performance and longevity:

  • Load Requirements:

Determine the magnitude and direction of the loads the linear bearing will experience. Consider both static and dynamic loads to select a bearing with an appropriate load capacity.

  • Precision and Accuracy:

For applications requiring precise positioning, choose linear bearings with high precision and low backlash. Factors like repeatability and positional accuracy are crucial.

  • Speed and Acceleration:

Consider the speed and acceleration at which the linear bearing will operate. Higher speeds may require bearings with lower friction and better heat dissipation.

  • Environmental Conditions:

Assess the environmental factors such as temperature, humidity, and exposure to contaminants. Choose linear bearings with suitable materials and seals to withstand the conditions.

  • Space Constraints:

Take into account the available space for mounting the linear bearing. Some applications may have limited space, necessitating compact and lightweight bearing options.

  • Maintenance Requirements:

Consider the maintenance needs of the bearing. Bearings with self-lubricating properties or easy access for lubrication can reduce maintenance frequency.

  • Mounting and Configuration:

Choose a linear bearing that can be easily mounted and integrated into your system’s design. Consider factors like mounting orientation and available mounting surfaces.

  • Life Expectancy:

Estimate the expected lifespan of the linear bearing based on the application’s requirements. Select a bearing with a suitable design life to prevent premature failures.

  • Cost and Budget:

Balance the desired performance with the available budget. Opt for linear bearings that provide the necessary features without exceeding cost limitations.

  • Accessories and Add-ons:

Consider any additional accessories or add-ons, such as seals, lubrication systems, or end caps, that can enhance the bearing’s performance and protection.

  • Manufacturer and Supplier:

Choose reputable manufacturers and suppliers that offer reliable products and good customer support. Quality assurance and technical assistance are essential.

Overall, a comprehensive assessment of these factors will help you select the most suitable linear bearing for your specific application, ensuring optimal performance, longevity, and cost-effectiveness.

China best LM/ LME/LMB  Stainless/ Bearing Steel Linear Bearings(LM5UUAJ LM6UUAJ LM8UUAJ LM10UUAJ LM12UUAJ LM13UUAJ LM16UUAJ LM20UUAJ)   bearing distributorsChina best LM/ LME/LMB  Stainless/ Bearing Steel Linear Bearings(LM5UUAJ LM6UUAJ LM8UUAJ LM10UUAJ LM12UUAJ LM13UUAJ LM16UUAJ LM20UUAJ)   bearing distributors
editor by CX 2024-05-16