JDB is a kind of solid lubrication embedded bearing with metal basis and embedded graphite and MoS2 as lubricant .it may work  without any oil for long period. suitable for reciprocating, oscillation or intermittent motion where oil film is hard to be formed. 

1. use for high load low speed and self-lub. Like dam gate and water gate bushes, hydraulic turbine bushes etc.

2. use for high temp. Such as iron and steel factory machines and so on.

3. Automobile production, like assembly lines, press linws, conveyor lines and so on.

4. Heavy duty machines like steel rolling mills, injection machines, press dies etc.

5.And any others like chemical machines, food processing machines, paper mills, textile machines etc.

WZB-3W JDB sliding brone bushing washer/plate with graphite