Product Video
Main specification parameter for Cat idler of D8R
|
Brand |
Model |
Product Name |
Part Number |
Quantity |
Weight |
|
Caterpillar |
D8R |
Idler GP-Track |
1111729 |
1 |
300.28Kg |
Compatible Equipment Models: 1111729
|
D8/D8R |
D8T |
Product Details
|
Product Name |
Idler |
|
Part Number |
1111729 |
|
Origin |
United States |
| Model | D8R |
| Quality Assurance | 6-12 Month |
|
Price |
Negotiable |
| Brand Name | STONE |
|
Packing Details |
Standard Export Packing |
|
Delivery Time |
0-30 Days |
|
Payment Term |
L/C, T/T |
|
Price Term |
FOB, CIF, CFR |
|
Supply Capacity |
1000 PCS/Month |
|
Minimum Order Quantity |
1 PC |
|
Material |
High Quality Steel |
|
Technology |
Precision Machining |
|
Surface |
Treatment Anti-Corrosion Coating |
|
Quality |
Original Factory Standard |
|
After-Sales Service |
Full Support, Online Service |
|
Color |
Standard Caterpillar Yellow or Customizable |
|
Application |
Excavator |
|
Customizable |
including customized materials, surface treatment and specifications |
High Rim Strength


High quality manufacturing
High-precision manufacturing, stable pressure resistance
High-precision manufacturing:
Our Caterpillar bulldozer track idler adopts manufacturing technology comparable to the original factory and strict processing standards to ensure the dimensional accuracy of the idler, so as to reduce the friction and wear between the idler and other components of the track system (such as track pins, track shoes, etc.) during operation, and improve the reliability and durability of the entire track system.
High-strength materials:
The idler is made of high-quality high-strength materials. Good materials enable the product to withstand the huge impact and pressure generated by the bulldozer during operation. Even under harsh working conditions, the idler can maintain good performance and is not prone to deformation, breakage and other damage, reducing the maintenance cost of the equipment.
Structural design:
The idler wheel adopts a reasonable wheel rim shape and width to increase the contact area with the track, disperse the pressure and reduce the wear of the track. The structure of the bearing and shaft of the Carter bulldozer track idler is also strengthened to improve its torsional strength and bending strength.
The role of idlers
Technology First
The idler wheel is one of the key components in the bulldozer chassis system.
Provide support
The Caterpillar bulldozer track idler is installed in the track system of the bulldozer, located above or below the track, supporting the track and ensuring that the track maintains the correct tension and running track during driving, so that the bulldozer can travel and operate smoothly on various terrains.
Enhanced stability:
The reasonable layout and design of the idler wheel helps to improve the overall stability of the bulldozer. When the bulldozer is doing operations such as pushing earth and leveling the site, it can reduce the shaking and instability caused by track deformation or uneven force, making the operation more stable and reliable.
Adjust the track tension:
The track tension may change under different terrains and working conditions. The position of the idler wheel and the tensioning device cooperate with each other, and the track tension can be adjusted as needed to adapt to various complex terrains, such as soft mud, rugged mountains, etc., to prevent the track from slipping or falling off.
Improved passability:
Bulldozers often encounter various obstacles and uneven ground during operation. The structural design and installation position of the Carter bulldozer track Idler can help bulldozers better cross obstacles and pass through rough terrain, improve the passability of bulldozers, and expand their operating range.
Work Scene
Use case examples
The following are examples of how the Caterpillar D8R idler works in agriculture and forestry:

Farmland leveling
In a large-scale farmland development project, the original land was uneven, with a large number of mounds and gullies, which affected large-scale mechanized planting. The Carter D8R bulldozer uses powerful power and a solid chassis system, combined with the stable support and guidance of the bulldozer track idler, so that the crawler can run smoothly on the undulating ground, flatten the excess earth, fill the low-lying areas, and quickly and efficiently complete the land leveling work of thousands of acres of farmland.
Structure and pattern design
An agricultural irrigation project requires the construction of irrigation channels in the farmland area to solve the water problem of crops. After being equipped with our track idler, the Carter D8R bulldozer plays an important role in the channel construction site. It is responsible for digging the earth in the channel and pushing the excavated earth to both sides of the channel to form a stable slope. During the process of channel digging and earth pushing by the bulldozer, it ensures that the equipment maintains a stable driving and operating state on the soft and hard farmland soil.


Construction of forest roads
In order to facilitate the transportation of timber and the management of forest resources, a forest road needs to be built in the mountainous forest. The Carter D8R bulldozer undertakes the preliminary work of road construction, mainly including leveling the roadbed and clearing obstacles on the road such as large stones and fallen trees. When working on the rugged mountain road, the bulldozer track idler plays a key supporting and guiding role, ensuring the stability and safety of the bulldozer under complex road conditions such as ups and downs and turns, so that the bulldozer can efficiently complete the roadbed preparation work of the forest road.
Maintenance points
Appearance inspection
Before and after each use of the bulldozer, the appearance of the bulldozer track idler should be carefully inspected. Check whether the wheel rim has cracks, deformation, wear and tear, etc. If cracks are found, even small cracks, it may affect the normal use of the idler and should be replaced in time; if the wear is serious, it may cause the matching clearance between the track and the idler to increase, affecting the driving stability and operating accuracy of the bulldozer, and also needs to be repaired or replaced in time.

Clear debris
Regularly clean the dirt, rocks, weeds and other debris on and around the track idler. If these debris are not cleaned in time, they will accumulate between the idler and the track, accelerating the wear of the track and idler, and may also affect the heat dissipation of the idler, causing the temperature to be too high and shortening its service life.

Regular lubrication
According to the instructions of the bulldozer, the bulldozer track idler bearings, shafts and other parts should be lubricated regularly. Generally, the idler bearing should be lubricated every 50-100 hours of operation. Use appropriate lubrication methods, such as using a grease gun to inject grease into the grease nozzle until the old grease is squeezed out. During the lubrication process, pay attention to the appropriate amount of grease filling. Too much or too little will affect the normal operation of the bearing. Too much grease will increase the resistance of the bearing, generate heat, and accelerate the aging of the grease; too little grease will not form a good lubrication film, resulting in increased bearing wear.

Regular inspection
In addition to daily inspection, the bulldozer track idler should be inspected regularly. Generally, the idler should be disassembled and inspected every 300-500 working hours to check the wear of the rim, hub, bearing and other parts. If the wear exceeds the limit or is damaged, the corresponding parts should be replaced in time.

Timely replacement
As one of the key components of the bulldozer, the idler wheel is inevitably worn out due to the large impact and friction during long-term use. When the idler wheel wears to a certain extent, such as the wear of the wheel rim causing the clearance between the track and the idler wheel to be too large, affecting the normal driving and operation of the bulldozer; the bearing is seriously worn, causing the bulldozer track idler to run unsteadily, become stuck or loose, etc., the idler wheel assembly should be replaced in time to ensure the performance and safety of the bulldozer.

STONE: Construction machinery parts expert in China

Stone (Shanghai) Engineering Machinery Co., Ltd. is a leading supplier of engineering machinery parts, focusing on providing high-quality parts for mining companies. Since its establishment in 2004, we have been based in Shanghai, China, and have built our own brand STONE, becoming a trusted choice in the industry. We are committed to providing a variety of parts including bulldozers, excavators and wheel loaders for well-known brands such as Carter and Komatsu. Our product line covers a full range of OEM parts, such as Track Chain, Track Rollers, Sprocket, Excavator Buckets, Blades, Excavator Cylinders, Swing Circles, and various electrical and hydraulic components to ensure that our customers' stringent requirements for quality and performance are met.
quality
years experience
service
hours warranty
F A Q

What should I do if the idler pulley suddenly gets stuck?
Stop the machine immediately: If the idler wheel is stuck, it may cause the bulldozer to be unstable or have other faults, endangering the safety of the operator. At the same time, continuing to operate may aggravate the damage of the idler wheel and surrounding parts.
Cut off the power supply: disconnect the power supply of the bulldozer to prevent accidental start-up of the equipment due to misoperation and ensure the safety of maintenance personnel.
Appearance inspection: Check whether there are any foreign objects around the idler wheel, such as stones, branches, wires, etc., stuck between the idler wheel and the track or in the idler wheel installation area. If so, clean them up in time.
Check lubrication: Check the lubrication condition of the idler bearing. If the grease is dry, deteriorated or insufficient, it may cause the bearing to wear more severely or even get stuck. It is necessary to add or replace the appropriate lubricant in time.
What are the symptoms of a bad idler bearing?
When the bulldozer track idler bearing is damaged, the following symptoms usually occur: abnormal noises such as buzzing and clicking when the idler is running; the track shakes or becomes unstable when the bulldozer is driving; when checking the idler, the idler feels stuck or loose when turned manually.
What to do if the idler wheel leaks oil?
If the idler is found to be leaking oil, first check whether the oil seal or seal is damaged. If the oil seal or seal is aging or worn and causes oil leakage, the damaged seal needs to be replaced in time. After replacing the seal, refill the grease according to regulations and ensure that the grease filling amount is appropriate. At the same time, check whether the idler is installed tightly to avoid damage to the seal due to improper installation.
Does the quality of the idler affect the service life of the bulldozer?
Yes, the quality of the idler will affect the service life of the bulldozer. A good quality idler has materials, processing accuracy, heat treatment process, etc. that meet the requirements, and can maintain good performance during long-term use, reduce wear on other components such as tracks, drive wheels, and supporting wheels, and extend the service life of the entire bulldozer chassis system. Poor quality idlers are prone to problems such as rim wear and bearing damage, which will accelerate the wear of other components and reduce the service life of the bulldozer.
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