For bearings equipped with pipe fittings and oil drain holes: Remove the lower oil drain plug; clean out all hardened grease. Many rolling bearings require a small amount of grease to be added between grease flushing intervals. While removing the drain plug, allow the machine to run at operating temperature.
Higher temperature increases the oxidation rate of grease. Pump a small amount of grease into the bearing to avoid breaking the grease seal. Clean and replace pipe fittings. When it exceeds 150°F (65°C), every 18°F (10°C) increase, the oxidation rate of grease doubles. Excess grease and dust on the outer surface have a heat preservation effect and prevent Wholesale Mechanical ball bearings manufacturers heat dissipation.
If the seal is in good condition, the amount and frequency of grease injection should be reduced. When the normal pressure in the bearing box is reached (about 10-30 minutes), the excess grease will stop draining. There is no grease or grease addition plan that can take care of all the load, speed, and operating temperature conditions where a bearing exhibits excellent performance. It is best to use a low-pressure grease gun to add grease.
Do not add too much grease! Regarding grease flushing, the following ‘decompression’ methods are recommended. In this way, the grease can be evenly distributed and the excess grease can be squeezed out through the oil drain orifice, thereby releasing the internal pressure. The working condition monitoring instrument can be used to assist in detecting the bad working condition of the local bearing. Cylindrical roller bearings = 5 times the fundamental frequency. Make sure to point out any abnormal conditions in the lubrication report, such as high temperature, noise, vibration or leakage in the bearing. Replace the grease fittings.
The main factors are as follows: Different types of bearings require different grease frequency: Radial ball bearing = basic frequency. For bearings equipped with pressure-reducing fittings but without oil drain holes: Clean the pipe fittings and pump grease into the bearing until the grease flows out from the pressure relief pipe fittings. After cleaning or replacing the pipe fittings, repeat step 1.
standardbearing