Product Description
Double row cylindrical roller bearings have 2 structures: cylindrical inner hole and conical inner hole (bearing post code plus K). Column cylindrical roller bearing has the advantages of compact structure, high rigidity, large bearing capacity and small deformation after loading. The conical inner hole can also slightly adjust the clearance, simplify the structure of the positioning device and facilitate installation and disassembly.
| Designation | Size | dynamic | static | Reference speed | Limiting speed | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| d[mm] | D[mm] | B[mm] | C[kN] | C0[kN] | [r/min] | [r/min] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| NNU 4152 M/W33 | 260 | 440 | 180 | 2 2 B | 280 | 470 | 2 | 3 C | 320 | 480 | 175 | 2 460 | 5 4 | 320 | 460 | 120 | 1 720 | 3 6 | 340 | 520 | 305 | 3 3 | 350 | 520 | 150 | 2 120 | 4 5 | 360 | 5 | 370 | 520 | 220 | 2 750 | 6 7 | 380 | 540 | 2/HB1 | 380 | 540 | 130 | 2 571 | 4 3 B | 4 C | 4/HA4 | 4 | 410 | 6 | 420 | 620 | 2 | 420 | 6/HB1 | 420 | 580 | 130 | 2 380 | 5 3 A | 440 | 620 | 225 | 3 910 | 9 8 | 440 | 640 | 230 | 4 570 | 9 8/HB1 | 457.2 | 660.4 | 228.6 | 3 690 | 8 150 | 670 | 950 |
| 316739 A | 460 | 650 | 235 | 4 400 | 11 200 | 670 | 1 000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| BC2-8004/HA1 | 460 | 780 | 280 | 5 610 | 10 400 | 560 | 850 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
About us
ZheJiang REET BEARING.CO.,LTD is a professional bearing manufacturer and exporter.
We have a wealth of technical.All producing processes are finished in our manufactory. As an ISO9001:2000 certified manufacturer,we will solve various problems in application and use of our bearings.
Our company is an authorized distributor of FAG, INA, CZPT and other world brand bearings.Our company has the right to self-export bearings and launches its own brand RTB.
Our bearing had been exported to more than 20 countries worldwide and are warmly welcomed.
We’re looking forward to your order.
FAQ
1.Is the company a production factory or a trading company?
ZheJiang REET BEARING CO.,LTD is a manufacturing enterprise focusing on bearings and integrating research, production and sales.
2.How many the MOQ of your company?
Depending on the size of the bearing, the MOQ is variable, if you are interested, you can contact me for a quote.
3.Does the company accept OEM or customized bearings?
In addition to standard products, we also supply non-standard and modified standard products for special application. Meanwhile, we provide OEM service.
4.Can the company provide free samples?
We can provide samples for free. You only need to provide shipping.
5.What are the company’s delivery terms?
We can accept EXW,FOB,CFR,CIF,etc. You can choose the 1 which is the most convenient cost effective for you.
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| Rolling Body: | Roller Bearings |
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| The Number of Rows: | Double |
| Outer Dimension: | Medium and Large(120-190mm) |
| Samples: |
US$ 5/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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Signs of Wear or Damage in Linear Bearings and Maintenance
Identifying signs of wear or damage in linear bearings is essential for maintaining their performance and preventing costly failures. Here are common signs of wear and damage and how to address them:
- 1. Increased Friction:
If you notice increased resistance during linear motion, it could indicate that the bearing components are wearing out. This can lead to reduced efficiency and accuracy.
- Solution: Regular Lubrication:
Ensure proper lubrication of the bearings to minimize friction and prevent premature wear. Follow manufacturer recommendations for lubrication intervals and types.
- 2. Uneven Movement:
If the linear motion becomes uneven, jerky, or experiences sudden stops, it may be due to damaged bearing components.
- Solution: Inspection and Replacement:
Inspect the bearings and associated components for any signs of damage, such as dents or cracks. Replace any damaged parts to restore smooth motion.
- 3. Abnormal Noise:
Unusual noises during linear motion, such as grinding or clicking sounds, can indicate friction and wear within the bearings.
- Solution: Lubrication and Inspection:
Lubricate the bearings as recommended and inspect for any foreign particles or debris that might be causing the noise. Clean and replace components if necessary.
- 4. Increased Play or Clearance:
If there is noticeable play or excessive clearance in the linear system, it can affect precision and lead to inaccuracies.
- Solution: Adjustment or Replacement:
Check for loose bolts, misalignment, or worn components causing the play. Make necessary adjustments or replace worn parts to restore proper fit and function.
- 5. Reduced Performance:
If your linear system is no longer achieving the desired accuracy or performance, it could be due to worn bearings.
- Solution: Maintenance and Replacement:
Regularly perform maintenance tasks, such as cleaning, lubrication, and inspection. If performance does not improve, consider replacing the bearings with new ones.
- 6. Visible Damage:
Any visible signs of physical damage, such as deformation, corrosion, or cracks, require immediate attention.
- Solution: Replacement:
If the damage is severe, replace the damaged bearings promptly to avoid further issues.
Regular maintenance practices, including proper lubrication, cleaning, and inspection, are crucial for preventing wear and damage in linear bearings. Addressing any signs of wear early can extend the lifespan of the bearings and ensure consistent performance in various applications.
Contribution of Linear Bearings to Smooth Movement of Conveyors and Slides
Linear bearings play a crucial role in ensuring the smooth movement and operation of industrial conveyors and linear slides. Their contributions are as follows:
- Reduced Friction:
Linear bearings are designed to minimize friction between moving components, facilitating smooth motion of conveyors and linear slides. This reduces wear and tear, energy consumption, and the need for frequent maintenance.
- Precision Movement:
Linear bearings enable precise positioning and controlled movement. This precision is vital for conveyors and slides that require accurate placement of materials, products, or components.
- Stability and Load Distribution:
Linear bearings distribute loads evenly across the bearing surface, enhancing stability and preventing uneven wear. This is especially important for conveyors that handle varying loads and linear slides that support heavy components.
- Quiet and Vibration-Free Operation:
Linear bearings contribute to quiet and vibration-free operation. This is crucial in environments where noise reduction and minimal vibrations are essential for the comfort of operators and the integrity of products.
- Efficient Energy Transfer:
Linear bearings ensure efficient energy transfer by reducing energy losses due to friction. This efficiency is particularly beneficial in systems where multiple conveyors or slides are connected, improving overall system performance.
- Longevity and Reliability:
Linear bearings enhance the longevity and reliability of conveyors and slides by reducing wear on moving parts. This results in extended operational lifespans and reduced downtime for maintenance.
- Flexibility and Customization:
Linear bearings come in various designs and sizes, allowing for customization to suit specific conveyor or slide requirements. This adaptability is valuable for accommodating different loads and motion profiles.
- Wide Range of Industries:
Linear bearings find application in industries such as manufacturing, logistics, packaging, and material handling, where conveyors and linear slides are essential components of the workflow.
In summary, linear bearings contribute significantly to the efficient, precise, and reliable movement of industrial conveyors and linear slides. Their ability to reduce friction, ensure stability, and support heavy loads enhances the overall performance of these systems.
Advantages of Linear Bearings over Other Bearing Types
Linear bearings offer several distinct advantages when compared to other types of bearings, particularly in applications that require controlled linear motion. These benefits contribute to their widespread use across various industries:
- Precise Linear Motion:
Linear bearings are designed specifically for linear motion, providing accurate and controlled movement along a defined path. This precision is essential in applications that demand accurate positioning and repeatability.
- Low Friction:
Linear bearings are designed to minimize friction during motion. The reduced friction translates to smoother movement, reduced wear, and improved efficiency, making them suitable for applications requiring consistent motion.
- High Load Capacity:
Linear bearings can handle significant loads in both radial and axial directions. This capability allows them to support heavy components and maintain stability under various loads.
- Minimal Maintenance:
Due to their design and minimal contact between moving parts, linear bearings require less maintenance compared to other types of bearings. This is particularly advantageous in hard-to-reach or inaccessible areas.
- Guided Motion:
Linear bearings provide guided and constrained motion along a single axis. This guidance eliminates the need for complex guiding mechanisms, reducing design complexity and simplifying assembly.
- Compact Design:
Linear bearings have a compact form factor, making them suitable for applications with limited space. Their small footprint allows for efficient use of available area.
- Low Noise and Vibration:
Linear bearings generate minimal noise and vibration during operation, contributing to quieter and more comfortable working environments in applications such as medical devices and precision machinery.
- Smooth Movement:
Linear bearings offer smooth and consistent movement, essential for applications requiring continuous and controlled motion, such as robotic systems and conveyor belts.
- Customization:
Linear bearings can be designed to fit specific application requirements, including load capacity, travel distance, and environmental conditions. This customization enhances their suitability for diverse applications.
- Reduced Wear:
The low friction and guided motion of linear bearings result in reduced wear on both the bearing and the mating surface, leading to longer service life and reduced maintenance costs.
Overall, the benefits of using linear bearings make them a preferred choice in applications that demand accurate linear motion, efficient load handling, and reduced maintenance. Their ability to deliver precision, stability, and reliability contributes to improved performance across various industries.
editor by CX 2024-03-23