Item

Material

Heat treatment

Surface treatment

Lubricating type

Application

High frequency quenching

45、40Cr

Normalizing or quenching & tempering, high frequency quenching .

Phosphatizing or vulcanizing 

Spiral grooves,

Dual-8 shape oil grooves,

Cross shape grooves，trip－circle oil grooves

Excavator，

Loader ，

Crane

Carburizing and quenching

20、20CrMnTi、20CrM etc. Low carbon steel or low carbon alloy steel

Surface hardness 56 to 62HRC, and carburizing layer 0.8 to 1.2mm

Phosphatizing or vulcanizing or

Sprayed plating graphite.

Dual-8 shape oil grooves,

Cross shape grooves，trip－circle oil grooves , oil pits

Excavator，

Heavy duty Loader ，

Whole quenching

40C etc. Middle carbon alloy steel

40~52HRC.

Phosphatizing or vulcanizing

Dual-8 shape oil grooves,

Cross shape grooves，trip－circle oil grooves

Loader

 Item

Friction factor

Critical using temperature

Critical dynamic load

Critical sliding speed

Wearability

Anti-impact ability

Anti-corrosion ability 

Oiling interval time

High frequency quenching

0.17

350℃

250N/mm2

1.5m/s

+++

++++

+++

+++

Carburizing and quenching

++++

++++

+++

++++

Whole quenching

200N/mm2

++

+++

+++

++