After the stainless steel needle roller bearings are installed, it does not mean that everything is fine. In order to ensure the correct installation, it is necessary to conduct an operation inspection.
How to check the operation? Those small machines can be rotated by hand. If the rotation is smooth, it indicates that the installation is correct. When checking, it is necessary to make sure that there is no foreign matter inside the bearing, and no cracks or indentations.
In addition, it is necessary to check whether the mounting seat is in good condition. If the clearance of the mounting seat is too small or the torque is unstable, there will be friction even during use and damage to the bearing.
For those large machines, you cannot turn them by hand. You can cut off the power immediately after starting with no load. Check whether there is obvious vibration and noise after the bearing is installed. The rotating parts are caused by too close contact. Enter power run.
When running with power, it needs to start with no-load and low speed, and then slowly increase the speed to the speed required for rated operation.
When checking the power running, you need to pay attention to whether there is any abnormal sound of the bearing, the temperature change of the bearing, whether the lubricant is leaking, etc. Once there is an abnormality during the operation, it is necessary to stop the operation and check the source of the problem.
To check the temperature of stainless steel needle roller bearings, we can speculate through the external temperature of the bearing housing. If we want to detect the temperature more accurately, we can detect the temperature of the outer ring of the bearing through the oil hole.
Under normal circumstances, the temperature of the bearing will rise gradually when it starts to operate, but after 1~2 hour of operation, the temperature will become stable. If the bearing is installed incorrectly, the temperature will rise immediately and appear Unusually high temperature.
For the rotating sound of stainless steel needle roller bearings, you can use a stethoscope. If you find obvious noise, abnormal sound, and irregular sound, it indicates that the installation is not normal.
