How To Lubricate NSK Bearings

1. Oil bath lubrication of NSK bearings

Oil bath lubrication is the most common lubrication method in NSK bearings and is suitable for lubrication of low and medium speed bearings. Immerse part of the NSK bearing in the groove. The lubricating oil is brought up by the rotating bearing parts and then flows back to the oil groove. The oil level should be slightly lower than the center of the lowest rolling element.

2. Oil dripping lubrication of NSK bearings

Oil dripping lubrication is suitable for NSK bearing parts that require a quantitative supply of lubricating oil. The amount of oil dripping is generally one drop every 3-8 seconds. Excessive oil amount will cause the bearing temperature to increase.

3. Circulating oil lubrication of NSK bearings

Use an oil pump to transport the filtered oil to the NSK bearing components. The lubricating oil after passing through the bearing is filtered and cooled before use. Since the circulating oil can take away a certain amount of heat and cool the bearing, this method is suitable for bearing parts with higher rotation speeds.

4. Spray lubrication of NSK bearings

Dry compressed air is mixed with lubricating oil through a sprayer to form oil mist, which is radiated into the NSK bearing. The air flow can effectively cool the bearing and prevent the intrusion of impurities. This method is suitable for lubrication of high-speed and low-temperature bearing parts.

5. Radial lubrication of NSK bearings

Use an oil pump to inject low-pressure oil into the NSK bearing through the nozzle, and the oil injected into the bearing flows into the oil groove through the other end of the bearing. When the bearing rotates at high speed, the rolling elements and cage also cause the surrounding air to flow at a very high rotation speed. It is difficult to send the lubricating oil to the bearing using ordinary lubrication methods. At this time, the lubricating oil must be sprayed by low-pressure injection. In the bearing, the position of the nozzle should be between the inner ring and the center of the cage.