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Undercarriage Parts

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STONE: Leading Undercarriage Parts 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!

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Excavator Bottom Track Rollers for Hitachi

 

Introduction of Undercarriage Parts

Heavy equipment undercarriage components refer to a group of parts that support and move the machine, including tracks or wheels, and their associated elements. Its function has a crucial role in the performance, stability and service life of the tool.

An undercarriage is a supporting structure located beneath various types of vehicles, including excavator undercarriages, dozer undercarriages, cars, or tractor-trailers. Wheels or tracks are installed on or connected to these undercarriage parts to support the movement of your machine.
Undercarriage Parts" consist of "Sprocket" & "Carrier Roller (Top Roller)" & "Front Idler" & "Track Roller (Bottom Roller)" & "Track Link / Track Link Assembly".

 

Types of Undercarriage Parts

Excavator Carrier Roller for VOLVO
Excavator Idler Assembly for Komatsu
Bulldozer Front Idler Assembly for Komatsu
Bulldozer Front Idler Assembly for Komatsu

Oval Track
Oval track is a type of undercarriage with an oval shape. As the name suggests, this track has a shape similar to a circle that is slightly extended into an oval. Generally, heavy equipment such as excavators and backhoes are equipped with this type of undercarriage.
Elevated Sprocket Track
Elevated Sprocket Track is a type of undercarriage which has the characteristic that the drive gear (sprocket) is placed in a higher position than other components. In this arrangement, the sprockets are not directly in contact with the ground surface, providing several important advantages.
Track Links
It is formed of various elements such as links, pins, seals and sleeves which are connected together in different mechanisms with the help of flexible connectors. In fact, track links are the undercarriage component that has the most vital role because they represent 50% of the total undercarriage replacement costs.
Track Shoes
Track shoes are designed to provide traction and support the weight of heavy equipment on the ground. Diverse working conditions emphasize the importance of selecting appropriate footwear. A wise rule of thumb is to choose a slimmer shoe to ensure adequate flotation.
Shoes that are too wide are more susceptible to sagging, bending and cracking. They require more force to turn, which can affect maneuverability. Choosing the right shoe width will provide optimal performance and reduce overall system costs as much as possible.
Sprockets
Transferring the drive load from the final drive through the sleeve, the track sleeve is then picked up by the drive gear and drives the track group through which the machine travels. Please remember that installing a chain link on a worn drive gear will only increase wear and shorten the life of the link sleeve.
Track Rollers and Carrier Rollers
Track rollers are responsible for supporting the weight of heavy equipment and regulating load distribution along the track. There are two wheel variants, namely those with two flanges and one flange, both of which function to support the weight of the bulldozer and maintain its height from the ground.
Meanwhile, the carrier rollers at the top aim to prevent looseness of the track. So that the life of the track wheels can be extended, it is best to avoid rotations that do not make a productive contribution.
Idler Wheels
Idler wheels are used to direct the track when entering and exiting the track wheels and provide a way to regulate slack and tension in the track.

 

Maintenance of Undercarriage Parts

 

 

Wear and tear: Heavy equipment undercarriages are subjected to constant wear and tear. This is due to the harsh operating conditions they are exposed to. Over time, the track chains, track shoes, rollers, idlers, sprockets, and other undercarriage components can wear out. This leads to reduced performance and increased downtime.
Misalignment: Misalignment of the undercarriage components can occur due to various reasons. Some possibilities are improper tension, uneven loading, or impacts from obstacles. Misaligned components can cause uneven wear and premature failure of the undercarriage, leading to costly repairs and reduced productivity.
Track damage: Tracks can get damaged due to impacts from rocks, debris, or uneven terrains. This can result in cuts, tears, or punctures in the track rubber. This reduces the traction and stability of the machine, affecting overall performance.
Leaks: Hydraulic fluid or oil leaks can occur in the undercarriage components, such as seals, gaskets, and bearings. Leaks can lead to reduced performance, increased wear, and potential damage to other components if not addressed promptly.
Corrosion: Heavy equipment used in corrosive environments, such as coastal areas or mining sites, can be prone to corrosion. Corrosion can damage the undercarriage components, leading to premature wear and reduced lifespan.
Lack of lubrication: Proper lubrication is essential for the smooth operation of the undercarriage components. Inadequate or irregular lubrication can result in increased friction, accelerated wear, and potential damage to components.
Overloading: Overloading heavy equipment can put excessive strain on the undercarriage components, leading to accelerated wear and potential failure. It is important to adhere to the manufacturer’s recommended load limits and operating guidelines to prevent overloading.
Irregular or inadequate maintenance can result in undercarriage issues. Skipping scheduled maintenance tasks, such as tensioning, alignment checks, or component replacements, can lead to increased wear, reduced performance, and costly repairs.

 

Features of Undercarriage Parts

 

Stability
There are numerous undercarriage components available on the global market, such as the suspension system and control arms, which provide stability by absorbing shocks and maintaining proper contact between the tires and the road surface.
As a result, the vulnerability of any road accident can be avoided by using stable undercarriage parts.
Control
Components like the steering system and control arms enable precise control over the vehicle's direction and handling, allowing drivers to navigate curves and corners smoothly. In this way, auto or heavy machinery drivers have full-fledged control over their machinery or vehicle.
Comfort
One of the undercarriage components is a suspension system that consists of springs and shock absorbers that work together to absorb and consume energy from sudden jerks in the road, minimize vibrations, and reduce the impacts of bumps and uneven road surfaces, finally providing a comfortable ride,
Safety
Well-equipped undercarriage parts, such as brakes, brake pads, calipers, and many more, offer efficient stopping power and responsive braking, enhancing overall safety on the road.Whenever an object comes in the path of a driver or operator, they have the capacity to stop it by utilizing a safety brake.
Handling
The suspension system, steering system, and control arms work in unison to provide responsive handling, allowing drivers to maintain control over the vehicle's movements.
Durability
Undercarriage components are designed to withstand the stresses and strains of daily driving, ensuring durability and longevity even in demanding situations.They are built from hardened metallic alloys to maintain their intrinsic configurations without disrupting their
fundamental properties, even in an aggressive external environment.
Performance Enhancement
Upgrading certain undercarriage components, such as suspension systems or brake systems, can significantly improve the overall performance of a vehicle, enhancing acceleration, handling, and loading capabilities.
Noise Reduction
Mufflers and exhaust system components help reduce the noise of the engine and provide a quieter driving experience boosting comfort for both drivers and passengers.
Emission Control
Undercarriage parts, particularly catalytic converters, play a vital role in mitigating harmful emissions, helping to minimize the environmental impact of vehicle operation.
Fuel Efficiency
Well-maintained undercarriage components, including wheel bearings and axles, contribute to reduced rolling resistance, which improves fuel efficiency and lowers overall fuel consumption.Easy Replacement
Many undercarriage parts are designed for relatively easy replacement, making it convenient and cost-effective to address wear and tear or perform upgrades.
Customization Options
Undercarriage parts often come with a range of customization options, allowing vehicle owners to tailor their vehicle’s performance and appearance to their preferences.
Corrosion Resistance
Undercarriage parts are typically constructed with materials that offer resistance to corrosion, helping to maintain their structural integrity and performance over time.
Warranty Coverage
Undercarriage parts, when properly maintained and serviced, may be covered by the warranties of a manufacturer, providing peace of mind and potential cost savings of unexpected failures or defects.

 

Function of Undercarriage Parts

 

CAT Single Flange Bulldozer Track Rollers

Power Delivery

The undercarriage functions as an intermediary between the engine and the ground, transmitting engine power to the ground through its components. This allows the machine to move and carry out its tasks. Undercarriage components work together to maintain efficient power flow, reduce friction and overcome resistance, ensuring the engine operates optimally.

Excavator Bottom Track Rollers for Hitachi

Mobility

The main function of the undercarriage is to provide mobility to heavy equipment. The undercarriage allows the tool to move on a variety of terrain, from flat surfaces to rough and rocky terrain. This enables operators to reach hard-to-reach work areas and perform a variety of tasks.

Bulldozer Double Flange Track Roller for Caterpillar

Productivity and Efficiency

The undercarriage affects the productivity and efficiency of the machine. A properly designed and maintained undercarriage can increase productivity by maximizing power flow and mobility, and reducing downtime due to repairs. An efficient undercarriage also reduces fuel consumption, operational costs and the environmental impact of machine operation.

 

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Common Problems of Undercarriage Parts

 

Q: How Long Does an Excavator Undercarriage Last?

A: The lifespan of an excavator undercarriage depends on various factors, including the quality of the components, the type of terrain the equipment operates on, and the usage and maintenance practices. On average, undercarriage components such as track chains, rollers, and idlers can last between 2,000 to 7,000 hours of operation. However, this lifespan can vary significantly based on the aforementioned factors. For instance, heavy-duty usage in harsh terrains with rocky or abrasive surfaces can result in faster wear and require more frequent replacements. On the other hand, proper usage, regular maintenance, and using high-quality OEM-recommended components can extend the lifespan of the undercarriage.

Q: How do you assess the importance of undercarriage and parts in crawler-mounted equipment?

A: The undercarriage parts such as links, pins, bushings, sprockets, rollers, idlers, shoes and frames are assembled into a system to support and propel a machine. The interplay between the components and the operating conditions results in a complex mechanism that requires regular maintenance to keep the equipment operating costs under check.
The condition of undercarriage and parts is therefore very important to ensure optimum equipment utilization, low running and maintenance costs as these parts can represent 50 per cent or even more of the equipment lifetime repair bills.

Q: How long will my undercarriage parts?

A: In fact, it depends very much on a number of factors, such as the driving and running hours of the machine, the surface it runs on and the maintenance you do to your undercarriage.

Q: How is the durability of the track undercarriage system ensured?

A: Having the right track tension is critical for long lasting life in your undercarriage system. Track tension needs to be a perfect balance of not too tight and not-too-loose. This can be tricky to achieve, and proper track tension depends on certain factors.

Q: How is the track undercarriage system designed to operate in different conditions?

A: The undercarriages are made of tough, forged steel components, similar to tracks used on bulldozers, which offer increased traction, improved ride and the potential to extend track life. This system offers better shedding of mud and debris than other systems, saving valuable time during clean out and maintenance.

Q: What factors should be considered when selecting the appropriate track undercarriage system for an excavator?

A: Equipment Type and Size
The first factor to consider when choosing an undercarriage is the type and size of your construction equipment. Different types of equipment, such as mini-excavators and compact track loaders, require different undercarriages to ensure optimal performance.

Q: What are the three factors that contribute to undercarriage wear?

A: The three factors that most impact rubber track and undercarriage wear are application, underfoot condition, and operating technique. The application – or how the machine is used – has a direct influence on track and undercarriage life.

Q: What is undercarriage damage?

A: The undercarriage of heavy equipment refers to the supporting framework underneath a piece of heavy machinery. There are various types of undercarriages, including rubber track undercarriages and machinery steel undercarriages. An undercarriage will include a range of different parts, like a set of tracks or wheels, which are assembled and attached to the undercarriage to help it move over different kinds of terrain. Other key components include frames, pins, idlers, rollers, sprockets, bushings and links. This component is crucial to a piece of equipment’s functionality.
Undercarriage damage is any damage or harm that has occurred to the supporting structure underneath a piece of heavy equipment. Considering how essential the undercarriage is to heavy machinery, damage can be a huge cause of concern, accounting for some extensive, costly repairs. There are a number of different factors or conditions that can cause harm to machine undercarriage.

Q: How to prevent undercarriage damage？

A: Regular Inspections: Inspect your equipment before and after each use, paying attention to parts such as the bearing seals, bolts, chains, rollers, segments and rock guards. As you inspect, look out for any parts that are worn or missing. In addition, stick to a regular plan for greasing parts, tightening bolts and performing test drives on new terrain, so you’ll always have equipment that operates at its best.
Cleaning: At the end of each day, give yourself enough time to clean your equipment. Clear out any debris before it hardens or freezes overnight. Use a shovel to break down large chunks of debris, and follow up with a power washer to clean hard-to-reach places.
Careful Operation: Avoid human error by only using your equipment according to its exact specifications. Be aware of the types of terrain you operate on, and clear the worksite of mud and harsh gravel whenever possible.
Scheduled Maintenance: Follow your equipment manufacturer’s suggested maintenance schedule. Regularly bringing your machines to the professionals, even when they’re operating normally, can help you avoid minor issues turning into costly problems.
Seek Professional Guidance: Ask for a professional to measure the wear on your undercarriage every 2000 hours of operation.

Q: How does an excavator undercarriage work?

A: Placed at the rear of the undercarriage, sprockets engage with the track links, propelling the excavator forward or backward as they rotate. The efficient functioning of sprockets is crucial for precise control over the excavator's movements. Track rollers and idlers contribute to maintaining proper track alignment.

Q: What is the undercarriage of an excavator?

A: The undercarriage of an excavator typically consists of tracks, sprockets, idlers, rollers, and the final drive. Each of these components plays an important role in the excavator's ability to perform its job efficiently and effectively. Tracks are the foundation of the excavator's undercarriage.

Q: What does the undercarriage protect?

A: The undercarriage is exposed to dirt and road debris. That can trap moisture and oxygen, which leads to rust, which can form on exposed metal. The undercarriage is also close to road salt and road treatments that can accelerate corrosion. Undercoating offers a measure of protection against these elements.

Q: What is the function of the undercarriage sprocket?

A: In the undercarriage system, the sprocket is responsible for transferring power from the engine to the tracks or chains of the machinery. Its teeth mesh with the drive links or lugs of the tracks, enabling efficient motion and traction.

Q: What operation wears out an excavator steel track undercarriage the fastest?

A: The front idler doesn't have as much tension on it. When you put the machine in reverse, the dynamics of the undercarriage change. It puts stress in the opposite direction, often leading to increased wear. Reverse operation has traditionally been one of the fastest ways to wear out a track.

Q: What is the function of the undercarriage?

A: An undercarriage is the supporting framework underneath any vehicle, whether it's an excavator, car or tractor-trailer. Any wheels or tracks get attached or fitted to the undercarriage to help your machine move.

Q: What does undercarriage mean heavy equipment?

A: The undercarriage of heavy equipment refers to the set of components that support and propel the machine, including the tracks or wheels, and associated parts. It plays a crucial role in the performance, stability, and longevity of the equipment

Q: What is undercarriage maintenance?

A: Operators must closely examine the undercarriage of their machines every day. Look for problems like damage and uneven or excessive wear (including on the drive sprockets and track pads), buildup of dirt or debris, and missing parts or components

Q: What is the undercarriage on a bulldozer?

A: Undercarriages are one of the essential bulldozer parts. Dozers rely on their undercarriages to keep them steady and mobile. It is what holds the dozer up and lets it travel forwards and backwards. The undercarriage includes several key components like tracks, rollers, idlers, sprockets and drive motors.

Q: Can undercarriage rust be fixed?

A: Rust can slowly eat away at your vehicle's undercarriage and cause permanent damage. In most cases, that damage is repairable, but depending on the extent of the damage, the repairs can be expensive.

We're professional undercarriage parts manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy high-grade undercarriage parts for sale here from our factory.

excavator top roller, segment sprocket, Excavator drive sprocket