Lubrication and sealing of long-life imported SKF tapered roller bearings

In order to ensure the long life of SKF tapered roller bearings, the oil lubrication method is more reliable than the grease lubrication method. As long as the oil is properly selected, it is well filtered, and the oil is supplied in an appropriate amount. It is regularly inspected and replaced in time. The key point is to ensure the film roughness ratio. The λ input is greater than 1 and as close as possible to 4 to achieve the target.

Grease lubrication generally has uneven oil film and lean oil. Lubrication performance is less stable than oil. At the same time, the life of the grease itself must be long. The life of the general grease is lower than the fatigue life of the rolling SKF tapered roller bearing in most cases. many. Long-life greases of certain varieties abroad, as long as a thin layer is evenly attached to the rolling surface of SKF tapered roller bearings, can maintain excellent lubricating performance for more than 10 years in components such as the trampoline spindle, such lubrication The lipid is also being developed in China.

In the case of unsuitable oil lubrication, it is advisable to use good quality grease and choose the appropriate fatliquoring and fat change cycle. Due to the large dispersion of fat life, the fat-removing cycle should be determined after careful monitoring and long-term accumulation of practical experience. Under good environmental conditions, with a suitable seal, high-quality grease can also maintain lubrication for a long time, as long as the life requirements of SKF tapered roller bearings are not too long, it is also possible to fill the grease once and then do not need to add fat. However, this situation should be handled with caution.

The seal prevents lubricant loss and dirt from entering the SKF tapered roller bearing, thus maintaining the lubrication and cleanliness of the SKF tapered roller bearing, which is beneficial to achieve long life, but also consider the simplicity, cost and sealing of the sealing structure. The degree of validity and expiration date are reasonably selected according to the environmental conditions and the required life of the SKF tapered roller bearing. At the same time, it should be noted that the proper use of the seal can bring great benefits; if the seal is used improperly, the effect is not great. For example, a contact-sealed seal heats up at high speed and wears out quickly and loses its sealing effect. The wear product contaminates the SKF tapered roller bearing; the non-contact seal has a pressure difference (air pressure or oil pressure) on both sides of the seal. The effect of dustproof or oil seal will be worse.

Appropriate addition of extreme pressure agents, anti-wear agents, etc. to the lubricant can also increase the service life of SKF tapered roller bearings.

For more information and purchase please visit: https://www.supplyforever.com

Process requirements for long-life imported SKF angular contact ball bearings

When necessary, the user can propose to SKF bearing manufacturers process quality requirements that extend the life of SKF angular contact ball bearings, such as the stress state of the rolling surface and the control requirements of the processing metamorphic layer. Generally speaking, the rolling surface is in a state of moderate compressive stress, but it is also necessary to combine the surface change rate from grinding to superfinishing to determine the process parameters that are most favorable for the fatigue life of SKF angular contact ball bearings. In terms of aspects, it is advisable to obtain the cooperation of professionals related to SKF angular contact ball bearings.

The metamorphic layer of the rolling surface mainly refers to the surface layer which is different in physical and chemical properties from the base metal, such as the oxide layer, the work hardening layer and the tissue distortion layer. The strength of the rolling layer is often poor and the bonding with the substrate is not strong, and the SKF angle is not good. The contact life and wear life of the contact ball bearing are extremely unfavorable and should be controlled.

For high-precision SKF angular contact ball bearings, because the required roughness of the rolling surface is small, if the process is not appropriate, the high-gloss surface is not formed by cutting, but by the rubbing action of the abrasive grains, the surface must be The metamorphic layer formed by the plastic flow is actually disadvantageous to the life of the SKF angular contact ball bearing and should be controlled.

For more information and purchase please visit: https://www.supplyforever.com