
Product Introduction
D85A-18 bulldozer lower roller
Product introduction
The bulldozer lower roller is an essential component of a tracked construction vehicle. It is located at the bottom of the machine's undercarriage and works in conjunction with other rollers to support the weight of the bulldozer and distribute its load evenly across the track. The lower roller is responsible for ensuring that the track remains stable and in place as the bulldozer moves, making it crucial for safe and efficient operation.
Without a reliable and well-functioning lower roller, the bulldozer would struggle to navigate challenging terrain and complete its tasks effectively. Therefore, it is critical to ensure that the lower roller is made from high-quality materials and is regularly maintained to keep it in good working condition.
Overall, the bulldozer lower roller is an indispensable component of any tracked construction vehicle. Its importance cannot be overstated, and its proper functioning is essential for ensuring smooth and successful construction projects.
Sizes of D85A-18 bulldozer lower roller

Detailed information of bulldozer lower roller as below:
|
Model |
D85A-18 bulldozer lower roller |
|
Hardness |
HCR52-58 |
|
Material |
50Mn 40Mn2 45# |
|
Manufacturing method |
Casting,forging,machining,assembly,painting |
|
Color |
Black or yellow |
|
Packing |
Standard seaworthy wooden pallets fastened by strong strips |
|
Port of shipment |
Xiamen |
|
OEM and ODM |
Acceptable |
|
Payment term |
TT and LC |
Requirements to make good undercarriage parts
To ensure the best performance of the undercarriage components, the bulldozer top rollers and bulldozer bottom rollers must allow the chain to run optimally in all conditions. Perfect movement is achieved with materials, treatments and mechanical processes applied following highly stringent rules and standards. We have adopted the same strict criteria for rollers for all kinds of applications and environments, introducing new seal groups to the range, specially designed to be more resistant towear.
The Komatsu Bulldozer D85 is a powerful machine designed to handle tough construction and mining projects. The D85 series includes various models, each with its unique features and capabilities. Here are some of the models in the D85 series and their key features:
1. D85EX: This model has a net horsepower of 263 HP and can operate at a maximum speed of 10.8 km/h. It has a blade width of 3660 mm, making it ideal for large construction projects.
2. D85PX: This model is specifically designed for mining sites and heavy-duty earthmoving tasks. It has a net horsepower of 263 HP and can operate at a maximum speed of 10.8 km/h. It comes with a large blade and good visibility, making it easy to operate in harsh environments.
3. D85ESS: This model is known for its exceptional steering system, making it easy to maneuver and operate on tight job sites. It has a net horsepower of 248 HP and can operate at a maximum speed of 10.8 km/h.
4. D85EXi: This model is equipped with intelligent machine control technology, which allows for enhanced performance and accuracy. It can be operated remotely and has a net horsepower of 263 HP.
5. D85PXi: This model is also equipped with intelligent machine control technology and is ideal for mining and heavy-duty earthmoving tasks. It has a net horsepower of 263 HP and can operate at a maximum speed of 10.8 km/h.
Overall, the Komatsu Bulldozer D85 series is an impressive set of machines that offer exceptional performance and reliability. With each model designed to handle specific tasks and environments, there is a D85 bulldozer to suit almost any project. Engineers, contractors, and construction workers alike can benefit from the efficiency and power of these machines. Whether it's for mining, construction, or any other challenging project, the Komatsu Bulldozer D85 series is a reliable and trustworthy choice.

Models For Below Machine Of Bulldozer Lower Rollers:
| D120-18 | D125-18 | D135-1 | D135-2 | D150A-1 | D155A-1 |
| D155A-2 | D155A-3 | D155AX-3 | D155AX-5 | D155AX-6 | D155C-1 |
| D155W-1 | D20A-5 | D20A-6 | D20A-7 | D20P-5 | D20P-6 |
| D20P-7 | D20PL-6 | D20PLL-6 | D20Q-5 | D20Q-6 | D20Q-7 |
| D21A-5 | D21A-6 | D21A-7 | D21E-6 | D21P-5 | D21P-6 |
| D21P-6A | D21P-6B | D21P-7 | D21PL-6 | D21Q-6 | D21Q-7 |
| D275A-2 | D275A-5 | D275AX-5 | D30A-15 | D30A-16 | D30A-17 |
| D31E-18 | D31P-16 | D31P-16A | D31P-17 | D31P-17A | D31P-18 |
| D31P-20 | D31P-20A | D31PL-16 | D31PL-17 | D31PL-18 | D31PL-20 |
| D31PLL-16 | D31PLL-17 | D31PLL-18 | D31PLL-20 | D31PX-21 | D31Q-16 |
| D31Q-17 | D31Q-18 | D32E-1 | D32P-1 | D355A-1 | D355A-3 |
| D355A-5 | D355C-3 | D375A-1 | D375A-2 | D375A-3 | D375A-5 |
| D375A-6 | D37E-1 | D37E-2 | D37E-5 | D37EX-21 | D37EX-22 |
| D37P-1 | D37P-2 | D37P-5 | D31PX-21 | D38E-1 | D38P-1 |
| D39E-1 | D39EX-21 | D39P-1 | D39PX-21 | D40A-1 | D40A-3 |
| D40F-3 | D40P-1 | D40P-3 | D40PL-1 | D40PL-3 | D40PLL-1 |
| D40PLL-3 | D41A-3 | D41A-3A | D41E-3 | D41E-6 | D41P-3 |
| D41P-6 | D41Q-3 | D41S-3 | D45A-1 | D45E-1 | D45P-1 |
| D475A-1 | D475A-2 | D50A-16 | D50A-17 | D50F-16 | D50F-17 |
| D50P-16 | D50P-17 | D50PL-16 | D50PL-17 | D51EX-22 | D51PX-22 |
| D53A-16 | D53A-17 | D53P-16 | D53P-17 | D58E-1 | D58E-1A |
| D58E-1B | D58P-1 | D58P-1B | D60A-3 | D60A-6 | D60A-7 |
| D60A-8 | D60E-7 | D60E-8 | D60F-7 | D60F-7A | D60F-8 |
| D60F-8A | D60P-3 | D60P-6 | D60P-7 | D60P-8 | D6OPL-7 |
| D6OPL-8 | D61EX-12 | D61EX-15 | D61PX-12 | D61PX-15 | D63E-1 |
| D63E-1A | D65A-6 | D65A-7 | D65A-8 | D65E-12 | D65E-7 |
| D65E-8 | D65EX-12 | D65EX-15 | D65EX-17 | D65P-12 | D65P-7 |
| D65P-8 | D65PX-12 | D65PX-15 | D65WX-15 | D68E-1 | D68P-1 |
| D75A-1 | D80A-12 | D80A-18 | D80E-18 | D80F-18 | D80P-18 |
| D83E-1 | D85A-12 | D85A-18 | D85A-21 | D85A-21B | D85E-18 |
| D85E-21 | D85EX-15 | D85P-18 | D85P-21 | D85PX-15 |
We don't list out all items. If you need any more items,please feel free to contact with us.
FAQ
1. Could We Be Your Exclusive Dealer?
Yes,our policy is that we will not let our customer to compete at the same place.
2. What's The Qualify Assurance We Provided And How Do We Control Quality?
1). Established a procedure to check products at all stages of the manufacturing process from raw materials to final products. Beside, we have also developed a procedure which identifies the inspection and test status of all items at all stages of the manufacturing process.
2).100% inspection in assembly lines. All controls, inspections,equipment,fixtures,total production resources and skills are inspected to ensure they consistently achieve the required quality levels.
3. What Is The Delivery Time?
Generally speaking, the delivery time is 20days to 45days.it depend on how many items for a order. But if the whole order are 200 serial track roller(bottom roller, lower roller), the delivery time is within 10days.
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