
D4D Bulldozer Bottom Roller
We supply bulldozer parts mainy for komatsu bulldozer and caterpillar bulldozer.
We devoted ourselves to bulldozer parts many years,covering most of the models.
we are expecting to be your long term partner in China.
Product Introduction
Products Description
D4D bulldozer bottom roller
A bulldozer bottom roller is an essential component of a bulldozer. It is a specialized roller that is installed at the bottom of a bulldozer to support the weight of the machine and enable it to move smoothly over rough terrain.
The design of a bulldozer bottom roller is such that it can handle the weight of the bulldozer, as well as the impact of the rough terrain. This roller is made of high-quality materials such as steel, which makes it durable and long-lasting.
The main function of the bulldozer bottom roller is to reduce friction while the bulldozer is moving. This reduces wear and tear on the machine, prolonging its life. It also allows the bulldozer to move more smoothly, which makes it easier to operate and more efficient.
In summary, a bulldozer bottom roller is an indispensable component of a bulldozer that helps it move efficiently and smoothly over rough terrain. It is a vital tool for construction, mining, and other heavy-duty activities that require the use of a bulldozer.

Warm forging treated roller shell gains distinguishing inner material fiber flow distribution architecture.

Each shaft is machined by the utilization of the most modern technological advances known to the industry, Grinding and finishing methods ensure mirror like finish and tempering with medium to low frequency heat treating equipment guarantees maximum strength.
technical requirement of D4D bulldozer bottom roller
1. Check all parts strictly before assembly and clean them
2. A small amount of oil shall be applied to the mating surface of the shaft sleeve and straight shaft before assembly
3. The floating oil seal ring shall be assembled in pairs, and its sealing surface shall be coated with lubricating oil. The contact surface between O-ring and floating oil seal ring shall not be coated with lubricating grease, and the assembly of floating seal rubber ring shall not be twisted
4. The total assembly force of the floating seal ring shall be 45-50kgf. M, so as to ensure the axial clearance of 0.4-0.9mm after assembly. When turning the wheel body by hand, there is a certain resistance moment, but no jamming
5. After installation, fill in the filtered lubricating oil. The tightening torque of the oil plug is 20 ± 2kgf. M. no leakage is allowed during the inspection
6. The painting color shall comply with jb2299-78
Caterpillar is a well-known and reputable brand in the heavy equipment and machinery industry. They offer a range of bulldozers that cater to different needs and requirements. In this article, we will be highlighting the differences between the Caterpillar D4D and D4H bulldozers.
The Caterpillar D4D bulldozer was first introduced in 1967 and was designed for small to medium-sized jobs. It had a gross power of 74 hp and a blade width of 10 feet. This bulldozer was popular due to its maneuverability, speed, and balance. Its tracks also featured a sealed and lubricated design, which reduced maintenance and repair costs.
On the other hand, the Caterpillar D4H bulldozer was launched in 1985 and was designed for heavy-duty and larger jobs. This bulldozer had a gross power of 90 hp and a blade width of 8.8 feet. It also had improved visibility and an advanced suspension system that offered a smoother ride. Furthermore, the D4H bulldozer came equipped with a diagnostic system, which allowed for quick and easy identification of any issues or faults.
Although both bulldozers offer exceptional performance and durability, the D4H is a more advanced and updated version of the D4D. It is noteworthy that the D4H bulldozer comes equipped with several features that make it more suitable for heavy-duty jobs. Its advanced suspension system, coupled with a diagnostic system, makes it easy to handle and operate.
In conclusion, both the Caterpillar D4D and D4H bulldozers have their advantages depending on the job at hand. The D4D is ideal for small to medium-sized jobs, whereas the D4H is more suitable for large and heavy-duty projects. However, both bulldozers have been designed to be efficient, reliable, and durable, making them a perfect choice for any construction site.
Caterpillar Bulldozer Models Available:
D3C,D3K,D4D,D4H,D5B,D5K,D5N,D6C,D6D,D6H,D6R,D7G,D7F,D7H,D8K,D8N,D9N,D10N,D11N etc..
Products parameters
| Track roller body type | Material | Welding type | Sprocket type | Loading container |
| Single flange | 50MN | Friction welding | Segment group | 20 feet container |
| Double flange | 40MN2 | Normal welding | Full rim | 40 feet container |
Product Picture


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Heattreatment

Welding

Assembly

Warehouse
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