The characteristics of agricultural machinery and equipment are that the operating environment is relatively dirty, which requires high waterproof and dustproof performance of bearing products, and can adapt to extreme conditions (such as outdoor conditions with large temperature differences or environments with serious muddy water and dust) It can work normally. Most of the agricultural bearing seals are double- or triple-lip seals, which can effectively isolate the entry of water and dust.

According to the installation method, the inner ring can be round, square or hexagonal, and the outer ring can be cylindrical or spherical.