China wholesale Lower Roller - Hitachi excavator undercarriage part EX200 track/bottom roller made in china – Heli

roller shell material:50Mn/45#
surface hardness:HRC48-58
Quench depth:>7mm
Roller shaft material:45#
Surface hardness:HRC48-58

Quench depth:>2mm
Collar material:QT450-10
Weight:40kg
Installation size:290mm,102mm

What is track roller?
The supporting wheel is used to support the weight of the tractor, while rolling on the track (rail link) or the surface of the crawler track. It is also used to limit the crawler and prevent lateral slippage. When the tractor turns, the rollers force the track to slip on the ground.
The support roller is often in mud, water and dust, and bears strong impacts, so it is required to have reliable sealing and wear-resistant rims
Why choose us?
From the forging of the roller shell to the heat treatment and finishing of the product, we have a complete production line. The internal parts of the product are copper sleeves, oil seals and O-rings. We purchase products from large domestic high-end manufacturers. We also Liugong’s lubricants. So choose us, the best cost performance and stable product quality.

ller warranty description
1.In the normal natural environment,one year or working 2000 hours warranty.The working environment is extremely harsh(such as salt and alkali land,etc) ,or engaged in crushing operations all the round,the warranty time is cut in half.
2.The oil leak of oil-seal,oil-nozzle,both sides of the shaft and etc,Cracks in the weld can be replaced during the warranty.
3.It can be replaced when the shaft is broken during the warranty period.
4.If the user of this product is found pouring butter into it,the warranty will not be granted.Model and size do not match, forcible installation, resulting in damage to the product, no warranty.
5.Users who replace 3 or less at the same time will not be guaranteed.