
Cat Bulldozer D4e D4d D4c D4h Top Roller 6K9880 Carrier Roller Upper Rollers
Product Introduction
Every single member from our higher effectiveness product sales staff values customers' requires and organization communication for Track Adjuster Cylinder, Ground Engaging Tools, Excavator Bottom Roller. We are willing to achieve greater brilliance and progress with full of passion, standardized operation and management. Our company has mastered a number of world-class core technology and product technology, and has a high reputation and established a good reputation in the industry. We rely on our rich human resources and excellent scientific research conditions to adapt to the overall development of the market with an innovative mechanism. Our company maintains safe business mixed by truth and honesty to keep long-term relationships with our customers.
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.
Our company has strong technical force and economic strength, with the international level of automatic production line of the Cat Bulldozer D4e D4d D4c D4h Top Roller 6K9880 Carrier Roller Upper Rollers. We take quality service as the purpose, reflecting the value of society and ourselves, is to build a comprehensive service provider. Accurate process devices, Advanced Equipment, Equipment assembly line, labs and software advancement are our distinguishing feature.
Hot Tags: bulldozer upper carrier roller, China, suppliers, manufacturers, factory, buy, G E T Fastners, Mini Excavator Top Roller, Hydraulic Cylinder, Bulldozer Sprocket, Bulldozer Front And Rear Guide Idler Wheel, Track Shoe Plate
[[ProKeywords]]SPEC DATA
Send Inquiry