Professional China Upper Roller Lower Roller - Hitachi excavator undercarriage part carrier/up roller EX200 made in China – Heli

Roller shell material:50Mn/45#
Surface hardness:HRC48-58
Quench depth:>4mm
Roller shaft material:45#

Surface hardness:HRC48-58
Quench depth:>2mm
Base collar material:QT450-10/45#
WEIGHT:48.5Kg

WHAT IS CARRIER/UP ROLLER?
The function of the supporting roller is to support the crawler belt upwards to make the crawler belt a certain degree of tension.
Why choose us?
Heli Machinery Manufacturing Co., Ltd. was founded in 2000 and is a highly creative technology company. The company’s main business covers excavators and bulldozer undercarriage parts, including track roller,carrier roller,sprocket,idler,track chain asy, track shoes, bucket shafts, gears, chain links, chain links, belt plates Screws etc.
In the field of R&D and manufacturing of construction machinery, Heli Machinery has strong strength. Adhering to the innovative concept of pursuing excellence, the company continues to invest in technology research and development in key user applications, bringing the latest research and development results from the laboratory to the market and transforming them into productivity. At the same time, the company has been implementing total quality management for many years, implementing the ISO9001 standard, and establishing and improving the company’s quality management system. The ISO9001 standard runs through the entire process of production and operation. At present, the company’s products have been sold all over the country and won the affirmation of customers and high recognition of the industry.