STONE: Leading Track Group Manufacturer in China
STONE(Shanghai) Engineering Machinery Co.,Ltd is a maintenance base for construction machinery parts, specializing in providing maintenance services and parts for mining enterprise equipment. Our team was established in 2004 and is headquartered in Shanghai, China. It has a registered capital of 15 million yuan and has a completely independent brand STONE. We specialize in the production and supply of spare parts for Bulldozers, Excavators, and Wheel Loaders. Our detailed catalog offers a complete selection of OEM parts including Track Chain, Track Rollers, Sprocket, Excavator Buckets, Blades, Excavator Cylinders, Swing Circles and more. Also offers a wide range of electrical and hydraulic parts.
Exquisite production technology
Processed with high-quality raw materials the wear resistance is higher. Automated production perfectly guarantees product quality.
Powerful warehousing and logistics
It has a large warehouse of 3,000 square meters to ensure the delivery time of accessories. Customizable delivery services to speed up logistics delivery.
Professional business capabilities
A complete data system ensures product accuracy. The professional maintenance team will respond online within 24 hours and solve construction site problems within 48 hours.
Service capabilities
The industry knowledge and professional capabilities of the STONE team are the first priority in serving customers!

Introduction of Track Group
Track group are made up of track links, pins, bushings, seal kits etc. There are two types of group: dry chains and lubricated chains. The former are commonly used on excavators, while the latter mainly on bulldozers. The pin rotates inside the bushing, internal wear on the pin and bushing is usually the main reason for dry chains requiring servicing. For lubricated chains, pins are drilled, providing a reservoir for lubricant, which is directed through a small oil passage to the area that between pin and bushing. By keeping the pin and bush lubricated, the wear life of the chain is extended.
The category of track group we produce
Track Link Assy Excavator For Hitachi
Track chains, also called track link assembly, is part of the undercarriage for crawler heavy equipment including excavators, bulldozers, cranes, and drilling machines.
Excavator Grouser Plates For Caterpillar
Grousers are devices intended to increase the traction of continuous tracks, especially in loose material such as soil or snow. This is done by increasing contact with the ground with protrusions, similar to conventional tire treads, and analogous to athletes' cleated shoes. On tanks and armoured vehicles, grousers are usually pads attached to the tracks; but on construction vehicles they may take the form of flat plates or bars
Similar traction-improving patterns have been implemented on the surface of the wheels on tractors. These include strakes, where material is removed from the surface of the wheel to achieve protrusion; cleats, with spikes instead of straight bars; and lugs with raised rubber on a tire tread.
Bulldozer Track Shoe Assembly For Caterpillar
Track shoes provide the working platform for the machine. Track shoes penetrate the ground giving the machine traction to move. Proper shoe selection is very important for better machine performance and longer undercarriage life. The narrowest shoe possible that allows adequate floatation should always be selected. A wider shoe is more likely to reduce the life of the undercarriage due to flexing while the machine is riding over rocks and hitting obstacles.
Benefits of Track Link Assy Excavator For Hitachi
Crack resistance
The bush is done the carbonizaton and the surface medium frequency quenching treatment, which ensures the reasonable hardness of core and abrasion resistance of internal and external surfaces.
Abrasion resistance
The pin if done the tempering and the surface medium-frequency quenching treatment, which ensures the sufficient hardness of core and abrasion resistance of external surfaces.
Deep sensing hardened tread
The track link has been done the medium frequency hardening treatment, which ensures its highest strength and abrasion resistance.
* Track links are forged,quenched and tempered.
* Rail deep hardened,with average surface hardness HRC53.
* Track bushings treated in a special furnace for high temperature carburizing.
* Deep hardened pins for best resistance to wear and fatigue.
* Track shoes heat treated for proper strength and wear resistance.


Benefits of Excavator Grouser Plates For Caterpillar
With high grade steel track plate or grouser shoe, you can know you are doing the best for your machine by reducing your undercarriage expenses.
Standard single grouser moderate service track plate/ grouser shoes provide good penetration and traction.
Extreme service single grouser track plates provide up to 50% longer wear life in high impact and abrasive conditions.
Double grouser track plate shoes offer less turning resistance for greater manoeuvrability.
Triple grouser track plate shoes offer the lowest penetration and turning resistance, and are the best manoeuvrable; typically these grouser plates are the most common and seen on most excavators.
Benefits of Bulldozer Track Shoe Assembly For Caterpillar
Offer Complete Traction When Pushing Materials
Track shoes and wheels are different in their comparisons. The former ones have an extra area of contact with the ground, whereas the latter ones have fewer areas of interaction with the ground.
Due to this feature, track shoes can be great for providing high-value traction for a dozer while freighting a heavy load by digging the ground with deep penetration. Even tracks have their capacity to move forward after forces push back.
Minimal Slippage in Loose and Soft Materials
Because the ground is unreliable, you should be cautious when operating a dozer.
Track shoes in the movables can do great work by offering deep penetration, resulting in resistance against slippery conditions even on the icy, hilly, or muddy ground.
Tracks let a dozer be steady and maneuverable regardless of whether the ground is slipping or eroding.
Fewer Effects on the Ground in Particular Conditions
You may be thinking that track-shoe dozers would do vast damage to your lawn if you drove them comparatively. But this case is not always.
Imagine a wet field or muddy lawn after rain. Narrow-wheeled vehicles cause deep ruts while moving over your field. Whereas, track-shoe dozers do not cause any problems because they transfer their loads to a wide area without sticking to your lawn.
Function of Track Link Assy Excavator For Hitachi
The track link assy is an integral component of the undercarriage system in various types of heavy machinery, such as excavators, bulldozers, and track loaders. Its primary function is to provide stability, support, and traction to the machine, allowing:it to navigate through various terrains with ease.
One of the key function of the track link assy is to distribute the weight of the machine evenly across the tracks. This helps to prevent excessive wear and tear on individual components, ensuring the longevity and durability of the undercarriage system.The track link assy also plays a crucial role in maintaining the alignment of the tracks, preventing them from slipping or derailing during operation.
In addition to weight distribution and track alignment, the track link assy is responsible for transmitting power from the machine's engine to the tracks. This power transmission allows the machine to move forward or backward, as well as perform other necessary functions, such as digging, pushing, or lifting. Without a properly functioning track link assy, the machine would not be able to efficiently carry out its tasks.
Another important function of the track link assy is to provide traction. The design of the track link assy, with its interlocking links, enhances the machine's grip on the ground, allowing it to traverse challenging terrains like muddy or uneven surfaces.This traction is crucial for machines operating in construction, mining, or forestry industries, as it enables them to work efficiently and safely even in demanding conditions.
Function of Bulldozer Track Shoe Assembly For Caterpillar




Most excavators use three-reinforced track shoes, and a few use flat bottom track shoes. When designing a three-reinforced track shoe, firstly find the ground contact pressure and the meshing soil capacity between the track reinforcement and the ground to ensure the necessary adhesion; secondly, the track shoe should have a higher bending strength and abrasion resistance. Three-reinforced track shoes generally have two mud cleaning holes. When the track shoe rotates around the drive wheel, the silt on the chain track section can be automatically cleaned with the help of the gear teeth, so the mud removal hole should be located between the two screw holes that fix the track shoe on the chain track section.
For crawler walking devices used in marshes or farmland, in order to protect the ground surface and reduce turning resistance, it is more appropriate to use extended crawlers and flat-bottomed crawlers. In order to ensure that when the track chain is at any position (including grounding, rotation around the driving wheel and guide wheel, and upper suspension position), the adjacent track shoes will not be caught between stones and cause excessive stress.
The distance is adjusted very accurately, and the lap lip of the appropriate shape should be designed. The function of the overlap lip is to make the track shoes close to each other, forming a belt shape that connects end to end. The track shoes should be installed sequentially in the same direction. The smaller the pitch of the track, the smaller the increase when the track chain runs between the driving wheel and the guide wheel. In this way, the running uniformity is good, the wear of the crawler chain is low, and the driving efficiency is high when walking. But the minimum pitch value should be determined according to the machine weight and the number of rows of the crawler chain. The hole spacing on the two rows of chain rails for installing track shoes should generally be larger, so that track shoes with different ground pressures can be replaced.
Maintenance and Replacement of Track Link Assy
Track link assy play a crucial role in the smooth functioning of heavy machinery, such as excavators and bulldozers. They are an integral part of the undercarriage system, ensuring stability and traction. However, over time, track link assy can wear out or become damaged due to continuous use in harsh conditions. It is essential for equipment owners and operators to understand the importance of regular maintenance and timely replacement of track link assy to avoid costly repairs and downtime.Regular maintenance of track link assy is vital to ensure their longevity and optimal performance. One of the primary maintenance tasks is to monitor the tension of the track link assy. It is crucial to maintain the correct tension to prevent premature wear and minimize stress on other undercarriage components. Regularly inspecting the track link assy for any signs of damage, such as bent or broken links, is also necessary. Any damaged parts should be replaced promptly to prevent further deterioration.
In addition to regular maintenance, there will come a time when track link assy need to be replaced. The lifespan of a track link assy depends on various factors, including the type of terrain it operates on, the frequency of use, and the quality of maintenance. As track link assy wear out, they can cause uneven wear on the sprockets and other undercarriage components, leading to reduced machine performance and increased fuel consumption. Therefore, it is crucial to monitor the condition of the track link assy and replace them when necessary.
When replacing track link assy, it is essential to choose high-quality replacements that are compatible with the specific make and model of the machinery. Using genuine parts or reputable aftermarket options ensures the best fit and performance. It is advisable to consult the equipment manufacturer or a trusted supplier to ensure the right track link assy is selected. Proper installation of the new track link assy is equally important to guarantee optimal performance and longevity.
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Common Problems of Track Group
We're professional track group manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy high-grade track group for sale here from our factory.
Carrier Roller, Dozer track roller, Idler












