Needle roller bearings are used in most mechanical applications today. These bearings are quite reliable even under the toughest conditions. They have a considerable service life under normal operating conditions.
The latest research shows that only one percent of needle roller bearings do not reach the expected service life.
This shows that when the needle bearing fails prematurely, it is mainly due to a reason that could have been avoided.
Most needle bearing failures, such as spalling, pitting, spalling, skewing, creeping, corrosion, rust, and abnormal wear patterns, are caused by a relatively small set of causes.
These reasons are usually interrelated and can be corrected at the same time.
The main causes of needle roller failure include installation, installation, working stress, environmental impact and bearing selection.
Proper lubrication is critical to increasing the life of needle bearings. It helps to cover the rolling and sliding surfaces with a thin film of oil to avoid direct metal to metal contact.
This helps reduce wear and friction and increases the life of the needle bearing.
Grease is used to lubricate the surface because it is easy to handle and helps to simplify the sealing system.
Oil is a good lubricant for high temperature or high speed operation.
Lubricating oil failure can be caused by the following reasons: using the wrong lubricant, using too much grease or lubricating oil, using too little grease or lubricating oil, mixing grease and lubricating oil, or using contaminated Grease/lubricating oil.
The installation and installation process is another area that can cause bearing failure.
Appropriate tools must be used during installation and installation.
In order to extend the life of the needle bearing, the misalignment and shaft deflection should be minimized.
Operating pressure is another cause of bearing failure.
Often, the factors in a large application can be changed at any time. If the load is too high, it can cause overload and early stress.
Also, if the load is too low, slippage may occur. Abnormal noise and temperature rise are the first signs of such problems. This is how the operating stress in the application affects the life of the needle bearing.