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2.Bearing Material: 50Mn, surface hardness HRC52-60,hardeness depth 3-6mm

3.Floating seal:hardness HRC65-72， face roughness 0.1µm-0.2µm

4.O-ring: have better oil resistance and high-temperature resistance

5.Technique： forging

6.Certification: ISO9001:2000

7.Warranty time: one year

8.color：black or yellow

We can supply all kinds of undercarriage part for excavator & bulldozer.Take the undercarriage parts for example, we have the idler, sprocket, track roller/ bottom roller, carrier roller/ top roller, track shoe, track link, track adjuster, recoil spring, yoke, cylinder, etc, if you can't find what you are looking for in the list, please feel free to contact us.

1) bulldozer series :SD13,SD16,SD22,SD23,SD32,SD42…

2) bulldozer series : D60.D85.D155.D275.D355…,D6D,D7G…

3)excavatorseries:PC60,PC130,PC200,PC220,PC300,PC360,PC400,PC450…