Oil-free bushings (or self-lubricating bearings) are sliding bearings that can run for a long time without external lubricating oil. They use special materials and structural designs, and achieve low friction and wear resistance through built-in solid lubricants. Widely used in high-load, low-speed or maintenance-free industrial scenarios.
Core advantages

Maintenance-free: no need to add lubricating oil, reducing downtime.
Pollution-resistant: adapt to harsh environments such as dust and moisture.
Low noise: stable friction coefficient and quiet operation.
Long life: wear-resistant materials significantly extend the service life.