... continuous operation, when the value of <0.1, can use without oil lubrication, but the best in the assembly with dry ... shaft wear (no quenching, lubrication) mg/ (cm2.km)Without lubricationLubricationBearing alloy2050100.2800.0050/005Bronze103150.1200.010.03Monomer casting nylon103100 ... when the relative humidity is 100% or in water use, use it to correction by moisture absorption and reduce the gap ...