1.Definition

• Load pressure P:Load pressure equals to the result gained by making the value of load pressure divide the vertical shade projected by the load shouledring surface of the bushing (Unit:N/mm2)
• Running Velocity V:Defined running velocity as the relative linear velocity against the mating surfac (Unit:N/mm2)
• PV Value:Define PV value as the result gained by multiplying the load value P and the velocity V (Unit:N/mm2 m/s).
• Permissible PV value:Max permissible value shall be smaller than the value gained by multiplying the max permissible pressure and the max permissible velocity.(Unit:N/mm2 m/s).

2.Max permissible PV value

The bushing can run for a short time when achieves its max PV value. It's the running service life requirement that decides the requirement for the value. In bushing design,we require that Boundary and non-lubricating state the max permissible PV value shall be smaller than the value gained by multiplying the max permissible load pressure and the max permissible running velocity.