The power operation starts at a low speed with no load and slowly increases to the rated operation under the specified conditions. However, it is more accurate to use the oil hole to directly measure the temperature of the outer ring of the bearing. If the bearing is installed improperly, the temperature will rise sharply, resulting in abnormally high temperature. If there is no abnormality, power operation can be started.

The inspection items include improper operation due to foreign objects, scars, and indentations, unstable torque due to poor installation and poor processing of the mounting seat, excessive torque due to too small clearance, installation errors, and seal friction.indicating abnormalities. The temperature of the bearing gradually increases from the start of operation, and usually stabilizes after 1 to 2 hours. Wait. Large machinery cannot be rotated manually, so immediately cut off the power after starting no-load, and the machinery runs idly.　　　

The rotation sound of the needle roller bearing is checked with a stethoscope, etc.The bearing temperature can generally be estimated from the Wholesale Wheel Bearing suppliers external temperature of the bearing seat. If an abnormality is found, stop the operation immediately, inspect the machine, and remove the bearing for inspection if necessary. Check for vibration, noise, contact with rotating parts, etc. The reasons include too much lubricant, too small bearing clearance, poor installation, and too much friction in the sealing device.

The items to be checked during the test run are whether there are abnormal sounds, changes in needle bearing temperature, lubricant leakage or discoloration, etc. Small machines can be rotated by hand to confirm whether they rotate smoothly. In the case of high-speed rotation, the wrong choice of needle bearing structure and lubrication method is also the reason.and enter power operation after confirming that there is no abnormality. The reasons include poor lubrication, poor shaft or bearing seat accuracy, bearing damage, and foreign matter intrusion., there are strong metal noises, abnormal sounds, irregular sounds, etc