How to improve the life of oil-free bearings

Author:admin   Date:2021-12-08

Oil-free bearings are an important part of modern machinery and equipment, with a wide range of uses. Take a car as an example, a car generally needs 100 to 150 oil-free bearings to ensure normal driving.

The main function of the oil-free bearing is to support the mechanical rotating body, reduce the friction coefficient during the movement, and at the same time ensure its rotation accuracy. In the course of use, the premature damage of the oil-free bearing and the short life span trouble workers in every industry. Today, I will share with you some methods and techniques for extending the service life of oil-free bearings.

1. Pollution

The meaning of pollution is that there are impurities such as dust and metal chips entering the inside of the oil-free bearing, which is also a cause of premature damage to the oil-free bearing, which cannot be ignored, accounting for about 14% of all causes. Opening the package too early before use will cause internal pollution. At the same time, the dirty and messy working environment during the installation process will cause the pollution of oil-free bearings.

2. Tiredness and destruction

Fatigue damage is another common damage method for oil-free bearings, and 34% of premature damage conditions are caused by this. The main reasons for the fatigue of oil-free bearings are: long-term overload operation of oil-free bearings, broken oil-free bearings without timely maintenance or improper maintenance, equipment aging, and so on.

The suggestion here is: choose the appropriate oil-free bearing type, check regularly and change the tired oil-free bearing in time.

3. Poor smoothness

According to investigations, poor smoothness is one of the most important reasons for premature failure of oil-free bearings. 50% of the premature failures are caused by poor smoothness. In detail, they include: failure to add smooth products in time, smoothness The product selection is wrong or not filled in place, the smoothing method is incorrect, etc.

The suggestion is: before smoothing the oil-free bearing, you must choose the correct smooth product and use the correct way to fill it.

4. Improper installation

The oil-free bearing life reduction caused by improper installation accounted for about 16%. Generally speaking, it mainly includes the following two detailed reasons: First, excessive force during installation. For example, some workers will use a hammer to hit the oil-free bearing. Oil bearing, the damage to oil-free bearing is actually very big, it is easy to form its deformation. Secondly, there is a deviation during the installation process, and it is not installed in the oil-free bearing position, resulting in the oil-free bearing clearance is too small, or the inner and outer rings are not concentric.

In this regard, the suggestion given is: choose appropriate or professional oil-free bearing device tools before installation, and don’t forget to use special equipment for testing after installation.

In response to this phenomenon, the suggestion given is: it is best not to unpack the oil-free bearings early before use; at the same time, the installation environment should be kept clean during installation, and the oil-free bearings used should be cleaned regularly to avoid pollution; Strengthen the sealing installation of oil-free bearings.