Most of the bearings need later maintenance and maintenance, and it is time-consuming and laborious, and maintenance-free bearings can help us solve this problem to a large extent.
Maintenance-free bearings can be seen from the literal meaning that the so-called maintenance-free means that they do not require maintenance or require very little maintenance. Maintenance-free generally means that for self-lubricating bearings, there is no need for manual refueling, so there is no need for maintenance during the service cycle. Maintenance-free bearings, generally speaking, there are more radially sealed bearings in the bearing field, and there are also some outer spherical bearings. In general, the manufacturer has added sealing devices on both sides of the bearing, which has been pre-injected with lubricating grease before leaving the factory, which can play a long-term and effective purpose of waterproof and dust-proof, and the grease will not be lost.
Maintenance-free bearings refer to rolling bearings that can work stably for a long time without maintenance from installation to fail. They are maintenance-free, high-performance, long-life, more environmentally friendly, reliable, and durable.
For universal joint cross , it is best to start maintenance and maintenance by yourself, so that the use time will be longer. xsjbearing.com