Compared to automotive bearings, agricultural machinery spare parts face more demanding operating conditions. Therefore, the focus when applying third-generation bearing technology differs:
Challenge:
Agricultural machinery (such as tractors and combine harvesters) needs to withstand heavier static and impact loads (e.g., towing heavy implements), operating in dusty, humid environments and potentially exposed to corrosive substances.
Technical Solutions:
The grease for agricultural machinery bearing units meets the temperature requirements ranging from -30℃ to +120℃, and features excellent water resistance and corrosion resistance. Clearance presets and controls prioritize stability under extreme impacts. JSPT adheres to and strictly enforces this principle.
Low Speed and High Torque：
Field operations involve slow vehicle speeds but high driving torque, which can cause bearings to operate in a boundary lubrication state, making them prone to wear. Therefore, selecting the right grease is crucial, requiring excellent extreme pressure (EP) and anti-wear properties, as well as good viscosity-temperature characteristics. To ensure effective oil film formation on the rollers at low speeds, the internal clearance design of the bearing is also critical.
Maintenance Cycle and Reliability：
Challenge: During the busy farming season, equipment needs to operate continuously at high intensity, resulting in extremely high downtime maintenance costs.
Technical Solution:
Therefore, the adoption of third-generation bearing units with "lifetime sealed maintenance-free" technology has become the mainstream trend in high-end agricultural machinery. By applying long-life grease once at the factory and permanently sealing it, it requires no further lubrication or adjustment throughout its design life, greatly improving uptime and reliability.