What kind of oil should be added to the crusher bearings?
In industrial production, the crusher is one of the common equipment, and the bearing is its core component. The selection of lubricating oil is directly related to the operating efficiency and life of the equipment. Recently, there has been a lot of discussion on the Internet about "What kind of oil is good for crusher bearings?" This article combines the hot topics and user concerns in the past 10 days to provide you with a detailed guide.
1. Principles for selecting lubricating oil for crusher bearings

When selecting pulverizer bearing lubricant, consider the following factors:
| factors | Description |
|---|---|
| working temperature | High-temperature environments require the use of high-temperature lubricants (such as synthetic oils), while low-temperature environments require oils with good low-temperature fluidity. |
| load capacity | High-load bearings require lubricants with high viscosity or extreme pressure additives. |
| Speed | High-speed bearings need to use low-viscosity oil to reduce friction losses. |
| environmental conditions | In humid or dusty environments, you need to choose lubricants with good anti-rust and dust-proof properties. |
2. Common types of crusher bearing lubricants
Based on recent user discussions and industry recommendations, here are several common lubricant types and their applicable scenarios:
| Lubricating oil type | Features | Applicable scenarios |
|---|---|---|
| mineral oil | Low cost and strong versatility, but poor high temperature performance. | Crusher bearings for medium to low speed and medium to low load. |
| synthetic oil | High temperature resistance, good oxidation resistance and long life. | High temperature, high speed or high load crusher bearings. |
| Extreme pressure lubricants | Contains extreme pressure additives with strong wear resistance. | Crusher bearings for heavy or shock loads. |
| Grease | Strong adhesion and good sealing, no need to add frequently. | Crusher bearings with low speed and inconvenience of frequent refueling. |
3. Answers to popular user questions
According to the search data of the past 10 days, the following are the issues that users are most concerned about:
1. Can ordinary engine oil be used for crusher bearings?
Although ordinary engine oil can provide short-term lubrication, long-term use may cause increased wear. It is recommended to choose special bearing lubricating oil or grease to ensure the life of the equipment.
2. Which is better, grease or oil?
Grease is suitable for low speed and high sealing requirements; lubricating oil is more suitable for high speed or high temperature environments. The specific selection needs to be determined according to the equipment working conditions.
3. How often does the lubricant need to be changed?
It is generally recommended to replace it every 3-6 months, or adjust it according to the equipment manual and actual working conditions. In high temperature and dusty environments, the replacement cycle needs to be shortened.
4. Precautions when adding lubricating oil
1.Cleaning and refueling tools: Prevent impurities from mixing into the oil, causing bearing wear.
2.Add appropriate amount: Excessive oiling may cause damage to the oil seal or poor heat dissipation.
3.Regular inspection: Determine whether it needs to be replaced by observing changes in oil color and viscosity.
5. Summary
Choosing the right lubricating oil is the key to ensuring the long-term stable operation of the crusher bearings. This article combines popular discussions across the Internet to provide you with lubricant selection, answers to frequently asked questions and usage precautions. It is recommended to select the most suitable lubrication solution based on actual working conditions and equipment requirements, and perform regular maintenance to extend the life of the equipment.
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