Today we will introduce rubber bearings in detail. Rubber bearings in water are mainly used for vertical axial flow pumps and mixed flow pumps. Rubber bearings are used to support the shaft and sleeve. It is divided into copper sleeve rubber bearings, iron shell rubber bearings, bearing bars and full rubber bearings. Manufactured by molding method. Mainly used in ship axial flow pumps, deep well pumps, etc., as the support body of the blades and pump blades.
Rubber bearings in water are mainly used for vertical axial flow pumps and mixed flow pumps, especially for circulating water pumps, washing pumps, cooling water pumps, sea water pumps, water supply and drainage pumps in atomic power plants and thermal power plants. On the other hand, due to the problem of water pollution caused by oil leakage in oil-lubricated bearings, water lubrication has been highly valued again. Rubber bearings are also widely used in bearings for stern shafts and rudder shafts, as well as for dredger cutting head spindle bearings. . Rubber bearings are generally used in machinery, and their main function is to support the first level of friction and reduce friction. Therefore, the accuracy and noise of the bearing are directly related to the use and life of the machine.
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Rubber bearing function
Rubber bearings are used to support the shaft and sleeve. It is divided into copper sleeve rubber bearings, iron shell rubber bearings, bearing bars and full rubber bearings. Manufactured by molding method. Mainly used in ship axial flow pumps, deep well pumps, etc., as the support body of the blades and pump blades.
Advantages of rubber bearings
1. Small power loss
Generally, the sliding friction between wet rubber and metal is very small. The special rubber formula developed by our company makes the friction coefficient of the bearing smaller. Comparison of friction coefficient
2. Less wear
It is more resistant to friction than lignum vitae wood (the material of wooden pulleys and wooden bearings), and it can last more than 4 years if the guaiac tree must be replaced after months of use.
3. Not easy to damage the shaft and sleeve
Even if sand and pebbles enter between the shaft and the rubber bearing, due to the effect of lubricating water, they will be removed along the bearing groove along with the rotation of the shaft. In order to make full use of this feature, our company has made special research on rubber formulations.
4. Soundproof and shock absorption
Since the friction between the rubber bearing and the shaft is very small, the soundproof and shock-absorbing effect of rubber is obvious.
5. No pollution
Since the lubricating material is water, no lubricating oil is needed, so no oil pollution will occur.
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Rubber bearing selection method
1. Selection of bearing model
Generally, the type of bearing needs to pass some relevant technical professionals, and then select the bearing according to the key points of the configured product and the load it bears. The business personnel mainly know whether the actual load of the user is in line with the selected bearing. If the bearing does not meet the requirements for use, the customer should be advised to change the model as soon as possible, but unless a special product is selected, there will generally be no problems.
2. Selection of bearing clearance
When consumers buy bearings, they will only provide the required models and grades to the merchants. Few people will ask for the choice of bearing clearance. Business personnel must ask about the bearing's operating conditions, the bearing's speed, temperature, and fit tolerance are directly related to the choice of bearing clearance. The selection of grease is generally based on the bearing speed, temperature resistance, noise requirements and starting torque, etc., and business personnel are required to have a good understanding of the performance of various greases.
3. Selection of bearing seal type
There are two types of bearing lubrication, one is oil lubrication, and the other is grease lubrication. In general, oil-lubricated bearings are selected in the form of bearings. Grease-lubricated bearings generally use dust caps or rubber. The seal is sealed. The dust cover is suitable for high temperature or good use environment. The seals are divided into contact seal and non-contact seal. The contact seal has good dustproof performance but large starting torque, and the non-connected seal has small starting torque but sealing performance No contact is good.