NTN thrust ball bearing grease selection needs to pay attention to six factors

The choice of NTN thrust ball bearing grease is directly related to the stable operation of the equipment. In order to better play the best condition of NTN thrust ball bearing, the following are several important factors for selecting grease: mechanical type; NTN thrust ball bearing Type and size; working temperature; workload situation; speed range; working conditions, such as vibration and the direction of the main shaft is horizontal or vertical; cooling; sealing effect;
1, anti-rust performance
The grease used in NTN thrust ball bearings must have an anti-rust effect, and the anti-rust agent should preferably be insoluble in water. Grease should have good adhesion and form an oil film on the surface of the steel.
2, mechanical stability
Grease becomes soft during machining and causes leakage. During normal operation, the grease will be raked into the NTN thrust ball bearing by the NTN thrust ball bearing housing. If the mechanical stability of the grease is insufficient, during the operation, the structure of the soap of the grease will mechanically disintegrate, causing the grease to be destroyed, thereby losing the lubricating effect.
3, oil seal
Oil seal is a necessary barrier to protect NTN thrust ball bearings and lubricants from external contamination. During the operation of NTN thrust ball bearings, no matter whether debris or moisture can penetrate into NTN thrust ball bearings to prevent damage. Proper installation and maintenance is an important factor in maximizing the service life of NTN thrust ball bearings. At the same time, attention must be paid to the cleanliness of NTN thrust ball bearings, the correctness of NTN thrust ball bearing selection, and the selection of appropriate installation and maintenance tools. In addition, NTN thrust ball bearings must be protected from contaminants and moisture and ensure proper installation and lubrication. Therefore, the design of the NTN thrust ball bearing, the condition of the oil seal, the type of lubricant and the lubrication cycle, and even the special maintenance play the same and important role.

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NSK bearing periodic inspection method

Core Tip: Regular inspections of NSK bearings are important to maintaining NSK bearings in optimal condition and can also reveal problems. What should be paid attention to when using NSK bearings
Regular inspections of NSK bearings are important to maintaining NSK bearings in optimal condition and can also reveal problems. Regarding the matters and related knowledge that NSK bearings should be used in their use.

First of all, we want to emphasize that it is important to keep the NSK bearings lubricated and clean.
Therefore, before we inspect the NSK bearing, we should clean the surface of the NSK bearing and then remove the parts around the bearing. It should be noted that the oil seal is a very fragile part, so extra care should be taken during inspection and disassembly. Do not apply excessive force to avoid damage to the parts. Then carefully check the oil seal of the NSK bearing and its surrounding parts. If it has been shown to be a bad symptom, be sure to replace it. A bad oil seal will cause damage to the bearing, causing the NSK bearing to be cloudless and causing equipment downtime.

Second, we also check the lubricant of the NSK bearing.
Lubrication is very important, not only for NSK bearings, but also for all imported bearings. However, please note that it is not advisable to add too much grease to FAG bearings.

The inspection method for NSK bearing lubricant is:
Apply a little bit of lubricant to the two fingers. If there is any contaminant, feel it. Or apply a thin layer of lubricant on the back of the hand and check the seal.

Then it is to replace the lubricant of the NSK bearing.

NSK bearings lubricated with oil should be refilled with fresh oil and allowed to rotate at low speed for a few minutes if the old oil is drained. As much as possible, allow the oil to collect the contaminants from the wreckage and then vent the oil. Note: It is best to filter the oil before use.
For NSK bearings that use grease lubrication, the replacement of the grease should be avoided with a cotton joint to any part of the NSK bearing. Since these residual fibers may be wedged between the rolling elements and cause damage, especially the application of small bearings requires attention to this problem.

Finally, it is important to note that the exposed NSK bearings are covered.

When inspecting NSK bearings, never expose the bearings to contaminants or moisture. If the work is interrupted, the machine should be covered with a piece of oil-paper plastic or similar material.

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