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Daily maintenance of bearings

wallpapers Resource 2020-05-04

Daily maintenance of bearings

In order to make the bearings function well, in addition to the accurate installation, but also inseparable from the daily maintenance of the bearings, so as to ensure the long-term stable operation of production.
The key of bearing maintenance is the lubrication of bearing. There are several methods of bearing lubrication, mainly divided into grease lubrication and oil lubrication. To select suitable conditions for the use of lubrication purposes. If lubrication is considered, the lubricity of oil lubrication is predominant, but grease lubricants can simplify the strength of the structure around the bearing.

1. The grease lubrication

Grease lubrication can be done after filling a long time after lubrication, and the structure of its sealing device is simple, so it is widely used. Grease lubrication has the sealing method of pre-filling the sealing type bearing with grease and filling the housing with proper amount of grease. The filling and replacement method of filling and fat supply is carried out at regular intervals. In addition, for the machine with many bearings to be lubricated, the pipe can be connected to the lubrication of the centralized grease supply.

(1) filling amount of grease

The filling amount of grease in the shell varies with the structure and volume of the shell. In general, it is advisable to fill to 1/3 ~ 1/2 of the volume. When the filling amount is too much, the grease will deteriorate, age and soften due to heating by stirring. But for low speed bearings, to prevent foreign matter invasion, sometimes filling to 2/3 ~ 1/2 of the volume.

(2) supplement and replacement of grease

The replacement and replacement of grease are closely related to the lubrication method. No matter what method is adopted, clean grease must be used to prevent the invasion of external foreign bodies. The supplementary grease shall, as far as possible, be of the same brand number. It is particularly important to ensure that the new grease does enter the bearing interior when adding grease.
In addition, when adding or replacing a new grease, the original grease should be checked for failure or if there is a foreign body in the grease. If there is a failure or a foreign body in the grease, the original grease should be cleaned and added before the clean grease is added.

2. Oil lubrication

Oil lubrication is generally divided into oil bath lubrication, drop lubrication, splash lubrication, circulation lubrication, jet lubrication, oil mist lubrication, oil and gas lubrication suitable for high-speed bearings and can withstand a certain degree of high temperature, but also to reduce vibration and reduce noise effective, most of the grease lubrication is not applicable to the occasion.

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Tag: Bearing