Agricultural machines come in a wide range of applications, starting with the most basic machinery such as soil tillage machines, irrigation equipment along with harvesting machines then progressing to more specialised ones like manure spraying machines and harvest processing machines. To enhance their performance and reliability, these machines require the use of precise and specific bearings. Besides that, agricultural machinery must be energy efficient and have a high weight carrying capacity, along with the ability to tolerate harsh climatic conditions including heat, dampness, muck, and dust.

To navigate through areas with hard and/or heavy soil, equipment with high mechanical strength is required. The two typical bearing designs used to achieve high load capacity are the double-row roller bearing and the double-row angular contact ball bearing, in which the two rows of rollers with various diameters aid in accomplishing a trade-off between maximum load capacity and reducing frictional losses.

Furthermore, agricultural equipment bearings and gearboxes are subjected to extreme weather conditions such as dampness, dirt, and dust. Equipment used for tilling and sowing activities in the spring or during the rainy season must be able to function in damp and wet conditions. Harvesting equipment must be able to endure dust and high temperatures in order to be utilised during the hot summer months.

All of these factors raise the possibility of lubricant contamination, which can diminish the bearings’ and gears’ performance and shorten their service life. As a result, bearing seals in such equipment must be built to endure moist and wet, as well as dry and dusty circumstances.