Regular maintenance of NTN outer spherical bearings

The correct maintenance and timely maintenance of NTN bearings is an important aspect to ensure the normal operation of road machinery. If the maintenance and maintenance of the outer spherical bearing is good, it can work for several thousand to disappear or even longer; on the contrary, the service life of the outer spherical bearing will be greatly reduced, and even serious accidents such as burning the tile and holding the axle will occur. Generally, the working temperature of the lubricating oil of NTN bearing should not be higher than 50 °C. In order to ensure sufficient lubricating oil and reliable lubrication, it is necessary to check the oil surface in time or regularly so that the oil level is kept within the specified range. To maintain some cleanliness, replace them according to the quality requirements of the oil. The failure of the external spherical bearing should be analyzed in detail and eliminated in time. Common faults and treatment methods for outer spherical bearings are as follows.

In order for NTN bearings to be fully utilized and to maintain their proper performance for a long period of time, regular maintenance (regular inspection) must be performed.

Through proper periodic inspections, early detection of failures and prevention of accidents are important to improve productivity and economy.

When the NTN bearing is removed for inspection, the appearance record is first recorded by photography. Also, verify the amount of lubricant remaining and sample the lubricant before cleaning the bearings.

a. The cleaning of the bearing is carried out by rough washing and fine washing, and a metal mesh frame can be placed on the bottom of the used container.

b. When rough washing, remove the grease or adhesive with a brush or the like in the oil. At this time, if the outer spherical bearing is rotated in the oil, be careful that the rolling surface will be damaged by foreign matter or the like.

c. When fine washing, slowly rotate the NTN bearing in the oil, and it must be carried out carefully.

The cleaning agent generally used is a neutral non-aqueous diesel oil or kerosene, and a warm alkali liquid or the like is sometimes used as needed. Regardless of which cleaning agent is used, it is often filtered and kept clean.

Immediately after cleaning, apply anti-rust oil or anti-rust grease to the outer spherical bearing.

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