
Undercarriage Excavator Top Roller for Komatsu PC240 PC220
Product Introduction
Our ability to develop and upgrade innovative technologies has enabled our Hydraulic Cylinder Barrel And Piston Rod, Bulldozer Lower Track Roller, Excavator Track Shoe to be well received and trusted by customers, and become a long-term strategic partner! Only through our pursuit of continuous innovation can we produce superior quality, leading-edge technology, and achieve our corporate goals. For anyone who is considering our business and solutions, please speak to us by sending us emails or get in touch with us right away. We have established friendly and long-term trade relationship with many clients in various countries in the world. We firmly believe our goods and service will benefit your business. With the business philosophy of "professional technology, quality first, teamwork strategy, and common growth", our company strives to develop and continuously improve.
Product Description
Bulldozer Upper Carrier Roller is made of 50Mn. It has many types and large quantities, which can support the weight of conveyor belts and materials. It is adopting through hardening system and spraying quenching system while complying with the stringent ISO System. And it has extremely high wear resistance and extremely low friction coefficient. Our Bulldozer Upper Carrier Roller is really a good choice for you.
Machining Process: Forging — Rough Turning — Heat Treatment — Finish Turning — Assembly — Spraying Paint
Heat Treatment Technical Data
• Surface quenching HRC 48-53
• Face hardening depth 5-8mm
• Corner hardening depth more than 1.5mm
Chemical Analysis
C | Si | Mn | P | S | Mo | |
Spec. | 0.48~0.56 | 0.17~0.37 | 0.70~1.00 | ≤0.04 | ≤0.04 | |
Actual | 0.49 | 0.14 | 0.88 | 0.016 | 0.023 |


We are using advance machining centre, horizontal and vertical CNC machining to execute processes such as machining, drilling, threading and milling to ensure the quality and precision of Bulldozer Upper Carrier Roller to ensure the accuracy of assembly dimensions. This is to maximize the life span of each component and minimize production cost per hour.

Application
The top roller fit with below bulldozer models:
KOMATSU | CATERPILLAR | JOHN DEERE | DRESSER |
D20 | D3B/D3C/D3G/D3K | JD450G | TD15M |
D30 | D4B/D4C/D4D/D4E | JD450J | TD20G |
D37E/D39EX-21 | D5/D5B/D5C/D5G/D5H | JD650J | TD25 |
D41A-6 | D5M/D5N | JD750J | |
D50 | D6C/D6D/D6R/D6H/D6M | JD850J | |
D60 | D7G/D7H/D7R | ||
D61 | D8R/D8T/D8K | ||
D85ESS-2 | D9L/D9N/D9R | ||
D80/85 | D10/D10L/D10N | ||
D155 | D11/D11N/D11R | ||
D275 | |||
D355 | |||
D375 | |||
D475 |
For more parts not included as the above, please send us your inquiry with specific needs!
PACKING: Strong Fumigate Wooden Pallet
PAYMENT: By 100% T/T. 30% T/T as deposit, and 70% before delivery. We’ll show you the photos of the products and packages before you pay the balance.
DELIVERY TIME: Generally, if we have stock, it will take about 7-day delivery time. Or it will take about 20 to 60 days after receiving your advance payment. The specific delivery time depends on the items and quantity of your order.
Under the guidance of the corporate philosophy of trust and creation, we actively carry out various businesses focusing on the development and sales of Undercarriage Excavator Top Roller for Komatsu PC240 PC220, and lay the foundation for development. In line with the tenet of quality first, reputation first and customer first, we are enterprising, brave to explore and sincerely serve the customers at home and abroad. Nowadays, the competition of modern enterprises is more and more human capital competition. How to obtain, retain and motivate human capital effectively is the key to obtain and maintain the core competitiveness of enterprises.
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