Maintenance-Free Dry Bearings is one of the most common self-lubricating bearings. It is based on steel plate with spherical bronze powder sintered inside it.PTFE and Pb mixtrue are rolled on the surface layer. Different from oil-contained bearings,it has no oilhole and it can operate well without lubricant.
Load capacity: 140N/mm2
Friction coef(u): 0.04~0.20
Speed limit: 5m/s
PV limit(dry): 3.6N/ mm2.m/sPV
limit(oil): 50N mm2.m/s
1.It can be used where no oil can be applied or oil is difficult to be applied.
2.It has long life and low friction as well as low pollution.
3.Due to its thin thickness and low weight,the machine can become more impact.
4.It can be used in low hardness of mating shaft, so the shafts processing is easy.
5.Mature technology made Maintenance-Free Dry Bearings very cheap.