The High Pressure Triplex Plunger Pumps are designed and manufactured by BOTUO PUMP,
With the power range from 35 to 40 kw, the triplex pumps are used in a variety
of applications including car wash, pressure cleaning, boiler feed, street
sweeping, sewer jetting, fire fighting, and other industrial applications. The
flow ranges is up to 170 L/min, and the pressure range is up to 210 Bar. Sewer jetting triplex pump is a kind of High Pressure Triplex Plunger Pump. High Pressure Washer Pump, High Pressure Triplex Plunger Pump, Bare Shaft Plunger Pump,Pressure Washer Pump Zhejiang Botuolini Machinery Co.,Ltd , https://www.chinaplungerpump.comSmooth Method for FAG High-Speed Bearings
High-speed FAG bearings require special attention during the lubrication process. The main challenges include the difficulty in evenly distributing the lubricant, as it tends to scatter and not adhere well to the bearing surfaces. Additionally, high-speed airflow can prevent the lubricant from entering the bearing properly, leading to insufficient lubrication. When too much lubricant is used, it can cause damage, such as pitting on the raceways and increased wear due to debris.
The operating temperature of high-speed FAG bearings often reaches around 200°C and may rise further if not properly cooled. This can lead to a reduction in the strength and hardness of the bearing components, causing misalignment and increased friction, which accelerates failure. Moreover, small wear particles generated during operation can accumulate and create a cycle of worsening conditions if not removed promptly.
Therefore, effective lubrication methods must ensure that the lubricant is delivered efficiently to the moving parts of the bearing, while also removing heat and abrasive debris. Several common methods are used for high-speed FAG bearings:
1. **Spray Lubrication**: This method involves spraying oil through nozzles at speeds between 10–20 m/s. It is typically directed into the gap between the inner or outer ring and the cage. For smaller ball bearings (30–35 mm inner diameter), this method can support dmn values up to 3 million. Using multiple nozzles improves oil delivery but may result in reduced efficiency at higher dmn values due to centrifugal forces.
2. **Ring Lubrication**: This method uses centrifugal force to spray oil through radial holes in the inner ring, allowing some oil to flow axially for cooling. This technique reduces power loss and improves thermal performance, making it ideal for ultra-high-speed applications. Some bearings can achieve dmn values up to 3 million with this method.
3. **Two-Layer Lubrication**: This approach forms a hydrostatic oil film between the inner ring and the journal, reducing the rotational speed of the inner ring and minimizing centrifugal effects. This allows for higher spindle speeds and improved dmn values.
4. **Oil-Gas Lubrication**: A highly efficient method that delivers a precise amount of oil mixed with air to the bearing. It offers lower friction, less heat generation, and reduced contamination. This method is particularly beneficial for bearings with high sliding contact, such as angular contact bearings, which can achieve dmn values up to 1.5 million.
5. **Lubricant Selection**: High-speed FAG bearings require lubricants that perform well under high temperatures. Esters-based oils like MIL L 7808 and MIL L 23699 are commonly used in jet engine bearings due to their thermal stability.
In summary, proper lubrication is essential for the reliable performance of high-speed FAG bearings. Choosing the right method and lubricant ensures longer service life, reduced wear, and optimal operational efficiency.
**Related Bearing Knowledge**
- Understanding the production requirements of bearing steel and oil film bearings
- Proper use of INA bearings and common issues in rolling bearings
This article is sourced from China Bearing Network. Please visit [http://www.chinabearing.net](http://www.chinabearing.net) for more information.
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Smooth method for FAG high speed bearings
Source: China Bearing Network | Time: 2014-05-22