Best quality Upper Roller Lower Roller - Excavator undercarriage part carrier/up roller CAT345/349 made in China – Heli

Roller shell material:50Mn/45#
Surface hardness:HRC48-58
Quench depth:>6mm
Roller shaft material:45#

Surface hardness:HRC48-58
Quench depth:>3mm
Base collar material:QT450-10/45#
WEIGHT:48.5Kg

What Is Carrier/up Roller ?
The function of carrier rollers is to carry the track link upwards ,make certain things are linked tightly , and enable the machine to faster and more steadily Our products use special steel and produced by new process .Every procedure goes through strict inspection and the property of compressive resistance and tension resistance can be ensured .

Carrier roller warranty description
1.In the normal natural environment,18 months or working 2000hours warranty.
2.The oil leak of oil-seal,oil-nozzle,both sides of the shaft and etc.
3.If the product has a shaft break, bend or screw fall off during the warranty period, replace it.
4.If the product with bracket has cracked screw holes or cracked bracket, replace it.
5.Injecting butter into the product privately is not covered by the warranty.