Wheel Excavator

Rigid Industries Co.,Ltd.: Your Professional Wheel Excavator Manufacturer!

Our manufacturing plant is located in Shandong, China. We have been doing wheeled and crawler excavators since 1994. Our machines are widely used in engineering, port loading and unloading, municipal construction, gardening, sanitation, water conservancy, agriculture and other fields. We also do OEM service for some large machinery brands, such as BOBCAT China, SINOMACH, etc.

Strong Production Capability

We expanded to a full line of skid steers and attachments in 2003, and in 2022 we expanded to compact dump trucks and compact wheel loaders. Our product offering is extensive.

Quality Assurance

Our products are strictly inspected before entering the market, and we have also obtained the European CE certificate.

Broad Market

We have been exporting construction machinery for 15 years, with target markets being Latin America, Europe, Australia, Russia and North America.

Leading Service

We will help customers purchase and store spare parts locally, and when some parts are damaged during the warranty period, we will ship parts to customers free of charge if necessary.

What is Wheel Excavator

Wheeled excavators are heavy construction machines that combine the functionality of a conventional excavator with the maneuverability of a wheeled vehicle. They are equipped with a rotating cab, hydraulic cylinders and a bucket for digging and moving materials.

Benefits of Wheel Excavator

Maneuverability and Speed

One of the main advantages of wheeled excavators is maneuverability. Compared to tracked excavators, wheeled excavators can travel faster, making them ideal for jobs that require frequent movement between sites. Tires allow them to travel on roads without damaging the pavement, which is a significant advantage in urban areas.

Versatility

Wheeled excavators are highly versatile. They can be used for a variety of tasks, including digging, lifting, and material handling. With the appropriate attachments, they can perform functions such as grading, trenching, and demolition. This versatility makes them a valuable asset to any construction site.

Reduce Surface Damage

The use of tires instead of tracks means that wheeled excavators exert less pressure on the ground. This can reduce surface damage, which is particularly important when working on paved surfaces or landscaped areas. Lower ground pressure means less soil compaction, which is beneficial for certain types of projects.

Flexibility in Urban Environments

Urban construction sites often have limited space and require machines that can travel in tight areas. Wheeled excavators excel in this environment due to their compact design and enhanced maneuverability. They can easily navigate narrow streets and tight spaces, making them an ideal choice for urban projects.

Easier to Transport

Transporting construction machinery can be a logistical challenge. The ability of wheeled excavators to travel on roads simplifies transportation between construction sites. This saves time and reduces the cost of loading and unloading the equipment onto a trailer.

Parts of Wheel Excavator

Hydraulic System
The hydraulic system in a wheeled excavator is a vital component as it controls the movement of the machine. It includes various components such as cylinders, pumps, valves, and hoses. Hydraulic cylinders are responsible for moving the boom, arm, and bucket. Pumps, usually hydraulic piston pumps, convert mechanical energy into hydraulic energy. Valves, including directional control valves, pressure control valves, and flow control valves, regulate the flow and pressure of the hydraulic oil. Hoses are essential for transferring hydraulic oil throughout the system. The efficiency of the hydraulic system directly affects the performance of the excavator. Regular maintenance, such as checking for leaks, changing filters, and monitoring fluid levels, is essential to ensure the longevity of the system and prevent costly repairs. In addition, operators must follow proper operating practices to avoid overheating and excessive wear of hydraulic components, thereby extending the life of the system.

Engine
The engine is the power source of the wheeled excavator, providing the horsepower required to drive the various functions of the machine. It must be rugged, fuel-efficient, and meet emission standards. Different types of engines are used in wheeled excavators, such as diesel engines, which are popular for their torque, reliability, and fuel efficiency. Tier 4 compliant engines prioritize emission reduction and environmental sustainability. Some wheeled excavators are equipped with hybrid engines that combine a traditional internal combustion engine with an electric motor for improved fuel efficiency. The horsepower of the engine directly affects the digging force, maneuverability, and overall performance of the excavator. Routine maintenance, such as regular oil changes, filter replacements, and cooling system inspections, are essential to ensure the life of the engine. Proper maintenance not only prevents unexpected breakdowns, but also makes the wheeled excavator more efficient and cost-effective to operate.

Undercarriage
The undercarriage is a key component of a wheeled excavator, responsible for supporting the weight of the machine and enabling mobility on various terrains. It includes tracks, wheels, rollers, idlers, and sprockets. The design and components of the undercarriage vary depending on the type of excavator and its intended use. For example, an excavator used in rough terrain may have rugged tracks, while an excavator used in urban areas may have wheels for enhanced maneuverability. Regular inspections of the undercarriage are essential to identify wear on components such as tracks, rollers, and sprockets. Maintaining proper track tension and replacing worn components in a timely manner are essential to ensure optimal performance and minimize downtime. Additionally, operators must adhere to weight and terrain guidelines to avoid excessive stress on the undercarriage, thereby preserving its life and aiding safe operation.

Cab
The cab is the control center of the excavator, featuring ergonomic design, intuitive controls and modern technology to ensure operator comfort and efficiency.

Applications of Wheel Excavator

Highway and Bridge Construction

Wheeled excavators are ideal for working on finished pavement such as concrete and asphalt highways. The machine’s rubber tires allow it to travel on these surfaces without damaging the pavement or leaving unsightly marks. This quality makes general-purpose wheeled excavators popular with contractors and municipalities who frequently work on pavement. Additionally, this mobility allows for a seamless transition between on-road and off-road positions, making them versatile machines for digging trenches. These machines are an excellent complement to traditional earthmoving equipment such as heavy crawler excavators. Another significant benefit is their ability to travel on the shoulder of the road. In this case, these excavators can effectively dig and clean trenches and remove debris or trim grass and shrubs from the trenches. This simplifies trench maintenance while minimizing disruption to adjacent roads – a convenient and practical solution.

Street Development and Maintenance

The small size of wheeled excavators and their rubber tires allow them to work in congested areas. These areas can include large urban areas that may not have enough space to transport and operate an excavator. Traditionally, municipalities have tended to use tractor-loader backhoes for underground construction projects, especially utility repairs. However, the trend is shifting toward the use of wheeled excavators and mini excavators due to the versatility and extended reach of these machines. The extended reach capabilities of these machines, in particular, exceed those of tractor-loader backhoes, which is beneficial in trenching and truck loading situations.

Site Development and Land Improvement

When necessary, wheeled excavators can be easily moved from on-road to off-road to complete traditional construction tasks such as trenching, grading, and backfilling. Unlike mini excavators, wheeled excavators can be configured two ways: with four outriggers or with two outriggers and a dozer blade. The outriggers and dozer blade help maintain stability during excavation applications or when the operator is lifting objects. The machine's outriggers can be controlled individually to keep the machine level on slopes. Lifting lugs mounted on hydraulic quick couplers enable the operator to attach chains to lift and place objects such as pipes.

Landscaping and Grading

Wheeled excavators are ideal for landscaping and grading tasks. They minimize surface damage when traversing finished landscapes, so less repair work is required at the end of the job. These excavators excel at preparing areas for new landscaping and clearing existing vegetation, including trees and stumps, using attachments such as buckets and thumbs. When combined with an auger attachment, they can quickly dig holes for planting new plants and fence posts.

Material Handling

Facilities such as scrap metal recycling centers and solid waste transfer stations often use wheeled excavators. In these applications, operators often pair them with a grapple attachment or magnet to lift material and place it into containers or rail cars, or for debris removal. Some models can be configured with a hydraulic lift cab to provide additional visibility for the operator. This feature is particularly useful when operators are loading material into containers and want to optimize the available loading space.

How to Choose Wheel Excavator

01.

Project Type and Its Requirements

Different projects have different requirements and it is important to determine these. For example, if you are working on a residential project, you will need a small excavator that can fit into a small space such as a backyard. In contrast, a large construction project such as building a highway or a commercial building requires a larger and heavier excavator.

02.

Soil Conditions and Topography

Another important consideration is the soil conditions and topography of the site. If you are working in soft or muddy soil, you will need a wheeled excavator with low ground pressure to prevent it from getting stuck. Similarly, if the site terrain is uneven or has a steep slope, you will need a wheeled excavator with good maneuverability and stability to prevent it from tipping over.

03.

Digging Depth and Reach

Digging depth and reach are other key factors you need to consider. The required digging depth depends on the nature of the project. For example, digging a trench or installing a utility line requires a shallower digging depth than digging for the foundation of a building or bridge. Also, consider the excavator's accessibility and the maximum distance from its base to dig, load, or dump. Digging a steep slope or digging a deep trench may require a longer accessibility.

04.

Required Attachments

When choosing the right size and weight for a wheeled excavator, the type of attachments needed for the project are also important factors to consider. The attachments required vary depending on the project requirements, and the right choice of attachments can increase efficiency and reduce the need for additional equipment. For example, if you are digging in rock or hard soil, a hydraulic breaker attachment can help break up the soil and make digging easier.

How to Maintain Wheel Excavator

Oil and Filter Changes
Engine Oil: Think of engine oil as the lifeblood of your excavator’s engine. Just like you need clean blood, the engine needs fresh oil to work well. Changing the engine oil regularly helps it stay healthy and run longer.

Hydraulic Filters: Hydraulic filters are like the cleaning crew for your excavator’s hydraulic system. They strain out the gunk and dirt, just like a filter in your coffee machine. Changing these filters ensures the hydraulic system stays clean and efficient.

Greasing and Lubrication
Key Lubrication Points: Greasing is like giving your excavator a little massage with special oil. It keeps all the moving parts happy and prevents them from getting too squeaky or worn out.

Belt and Hose Inspection: Imagine the belts and hoses as the veins and arteries of your excavator. They transport important fluids and air. Checking them is like ensuring your bicycle tires don’t have holes; things won’t work properly if they do.

Wheeled Excavator Cooling System Maintenance
Radiator Cleaning: The radiator is like a fan for your computer – it keeps things cool. Cleaning it ensures your excavator doesn’t get too hot, which can cause problems.

Coolant Level Check: Coolant is like a magic potion that prevents the engine from freezing or overheating. Checking the level ensures your excavator’s engine stays at the right temperature, just like you wouldn’t want to be too hot or cold.

Frequently Asked Questions

Q: How to repair a wheeled excavator when it breaks down?

A: Sometimes, just like your bike, wheeled excavators can have problems. It's vital to know how to deal with these problems.
Common Problems:
Hydraulic Leaks: If you see oil dripping like a leaky faucet, that's a hydraulic leak. It's like a water pipe leak, but with oil. Find it and fix it to keep everything running smoothly.
Electrical Problems: When a light or controller stops working, it's an electrical problem. Just like a light bulb in your room is broken; it needs to be repaired.
Engine Failure: If the engine starts making strange noises or stops working, it's an engine problem. It's similar to your bike engine and needs attention.
Maintenance and Repairs:
Some minor problems, like changing a light bulb, you can fix yourself. But for bigger problems, like a broken engine, it's best to call a professional, just like you would call a bike repair shop for a complicated bike problem. Stock up on important spare parts, like having a spare bike tire at home. When you need to replace something, buy quality parts, like choosing a durable bike tire.

Q: How to store and seasonally maintain a wheeled excavator?

A: When you’re not using a wheeled excavator, it’s like putting your bike away for the night. Proper storage and seasonal maintenance are essential to keep it in top condition.
Proper storage procedures
Cleaning and lubrication: Before you park your excavator, clean it out like you would a thorough wash on your bike. Grease moving parts to prevent rust and wear.
Battery maintenance: Think of the battery as the light of your bike. Make sure the battery is charged and in good condition so the excavator starts up as soon as you need it.
Seasonal maintenance tips
Prepare for winter: When you prepare your bike for cold weather, protect your excavator from freezing temperatures. Use antifreeze and check that everything is ready for the cold.
Prepare for extended downtime: When you don’t use your machine for a while, it’s like storing your bike for the winter. Give it a final inspection, put the cover on, and store it safely to prevent damage.

Q: How are wheeled excavator operators trained?

A: Operating a wheeled excavator is like driving a large, powerful vehicle. Operators need proper training and good practice to get the most out of it and keep everyone safe.
Proper Machine Operation
Safe Operating Techniques: Just like you learned the rules of the road when you started driving, excavator operators must follow safety rules. This means using the machine in a way that does not endanger people or property.
Load Management: Think of the excavator's arms as your arms holding a heavy backpack. Operators must know how to properly balance and handle the load to avoid accidents.
Environmental Considerations
Avoid Sensitive Areas: Excavators are like giant stomping grounds. It is critical to avoid places like wetlands or delicate landscaping that could be damaged. It's like not trampling delicate flowers in your garden.
Fuel Efficiency Tips: Just like you try to save gas while driving, excavator operators can use fuel-saving techniques. This not only helps the environment, but it saves money.
Monitoring Machine Performance
Gauges and Indicators: An excavator's dashboard is similar to that of a car. Operators must watch the gauges and indicators to make sure everything is running smoothly. It's like watching the speedometer and warning lights on a bicycle.
Early warning signs: Sometimes machines will signal when something is wrong. Operators must pay attention to these signs, just like they would pay attention to when their cell phone battery is low. Catching problems early can prevent major breakdowns.

Q: What are the daily inspections for wheeled excavators?

A: Visual Inspection
Tires and Tracks: Take a look at the tires or tracks first. Check for any signs of damage or wear. If they are in good condition, the excavator will not move smoothly.
Hydraulic Parts: The hydraulic parts are like the muscles of the excavator. Check for leaks or abnormalities. If there are leaks, it will affect the way the machine works.
Electrical System
Think of it like checking that all the lights on a bicycle are working properly. Make sure the lights and signals on the excavator are working properly. If they are not working properly, it can be dangerous, especially when working at night.
Fluid Levels
Engine Oil: An excavator needs engine oil, just like a bicycle chain needs enough oil in it to make it move smoothly. Check the oil level to make sure it is not too low.
Hydraulic Oil: This oil is essential for the movement of the excavator's arms and bucket. Check if there is enough hydraulic oil. If the fluid level is low, the machine will not work properly.
Coolant: Think of it like checking that the bicycle engine (if you have one) is not overheating. Coolant prevents the excavator engine from overheating. Make sure there is enough coolant.
Functional Tests
Hydraulic Functions: Tests whether the excavator's arm and bucket move smoothly. If they are erratic or slow, there may be a problem.
Controls: Checks whether the buttons and control levers in the cab (where the operator sits) are working properly. If they don't work, it will be difficult for the operator to control the machine.
Wheel Excavator Safety Systems: Make sure safety features such as alarms and emergency stop buttons are working properly. These are essential to prevent accidents.

Q: What are the key components of a wheeled excavator?

A: Boom and joystick: The boom and joystick (or lever) are essential for digging and reaching operations. The hydraulic system powers these components, allowing them to move precisely and powerfully.
Cab: The cab houses the operator and provides the control center for the machine. Modern cab designs are comfortable, with excellent visibility and often feature advanced controls and technology.
Chassis: Unlike crawler excavators, the chassis of a wheeled excavator consists of axles and tires. This design allows for faster travel speeds and less surface damage.
Hydraulic system: The hydraulic system is the heart of the excavator, driving the movement of the boom, joysticks, and other attachments.

Q: What are the main features of wheeled excavators?

A: Mobility: The most outstanding feature of wheeled excavators is their maneuverability. Unlike traditional excavators mounted on tracks, wheeled excavators can be easily moved from one job site to another without the need for additional transport equipment.
Versatility: Wheeled excavators are versatile machines that can perform a variety of tasks, including digging, lifting, and loading. Their hydraulic systems allow for precise control and efficient operation in a variety of conditions.
Stability: Despite their large wheelbase, wheeled excavators are designed to provide stability during operation. This ensures operator safety and enables precise movement even on uneven terrain.
Efficiency: With their powerful engines and advanced hydraulic systems, wheeled excavators provide high productivity and efficiency on the job site. They can easily handle heavy loads and tough materials, reducing project schedules and costs.

Q: What are the disadvantages of wheeled excavators?

A: Limited traction: Wheeled excavators may have difficulty in challenging terrain conditions, such as soft or muddy ground, steep slopes, or rough terrain. Their reduced traction compared to crawler excavators may affect stability and productivity in such environments.
Higher ground pressure: The weight of a wheeled excavator is concentrated over a smaller contact area, which can result in higher ground pressure, increasing the risk of soil compaction and terrain damage, especially on softer surfaces.
Stability issues: While wheeled excavators have excellent maneuverability, their higher center of gravity relative to crawler excavators may affect stability in certain operations, such as lifting heavy objects or working on uneven terrain. We recommend using an excavator as a crane for all lifting operations.

Q: Which type of excavator is best for a job site?

A: Before buying or renting a wheeled excavator, it’s best to evaluate the scope of the job. Will the machine you need be assigned to a single job or multiple jobs? Will the machine’s current job site assignment be the only job it will perform in your fleet throughout its life? Does the machine you choose need to accommodate any specific workspace restrictions? Wheeled excavators are equipped with rubber tires, which make them a popular choice when working with finished concrete or asphalt. These machines are often used in highway and street development, bridge construction, construction and manufacturing operations, site development, and land improvement. Other applications where wheeled excavators work well include ditch clearing projects and underground utility installations. If you need a machine for a single project or only a few times per year, renting a wheeled excavator may be a viable option. However, you may be committed to a long-term project that would be better served by an acquisition.

Q: How stable is the job site?

A: As a business owner, you may be asking yourself how exactly a wheeled excavator maintains its stability when used for heavy digging and lifting applications. Just as a crawler excavator relies on its undercarriage for stability, a wheeled excavator relies on its tires, dozer blade, and outriggers or four outriggers for stability in digging and lifting applications. Wheeled excavators can be equipped with a front dozer blade and two outriggers or four outriggers at the rear, two of which can replace the blade. The dozer blade can be used to replace the auxiliary machine when leveling or backfilling material, or when stabilizing the machine in digging applications. In addition, the large dozer base and parallel design of the blade minimize ground pressure. The outriggers can be controlled individually to level the machine on slopes.

Q: How much mobility will it provide?

A: If you need a machine that provides versatile, mobile performance and can get to the job site quickly, a wheeled excavator is a great addition to your fleet. Since the excavator is equipped with wheels, there is less need to trailer and move the machine when traveling short distances. The travel speed can be adjusted by choosing between three transmission speeds to increase productivity on a variety of job sites. In some cases, your operators will be working on a job site with limited space and need to get around several other machines. Wheeled excavators are compact enough to work efficiently on a single lane without shutting down an entire highway section or damaging existing infrastructure. Additionally, wheeled excavators have a two-piece, variable-angle boom that bends in the middle, giving your operator optimal visibility to both sides of the machine and additional flexibility.

Q: What maintenance considerations are there with wheeled excavators?

A: There are minimal wear items in a wheeled excavator undercarriage. Operators should follow a preventive maintenance program that includes regular visual inspections of tire pressure, wear, and damage. These are detailed in the owner's operation and maintenance manual. A visual inspection will show if the tires have tread punctures or sidewall damage, which is caused by road hazards. Also, look for rocks wedged between the dual tires, which can cause tire failure. Steel spacer rings are added to prevent rocks from getting between the tires, but it is still important to visually inspect the tires before use. Following a comprehensive preventive maintenance program can save you a lot of money by reducing downtime, which can increase productivity and profitability.

Q: What are the typical applications of wheeled excavators?

A: Wheeled excavators are often used for tasks such as digging trenches, excavating foundations, loading and unloading materials, and clearing debris from construction, mining, and landscaping projects.

Q: How do wheeled excavators differ from crawler excavators?

A: The main difference between wheeled excavators and crawler excavators is their maneuverability. Wheeled excavators are equipped with wheels for mobility, while crawler excavators use tracks.

Q: What are the advantages of using a wheeled excavator?

A: Some of the advantages of wheeled excavators include their maneuverability, ability to navigate in tight spaces, versatility in a variety of applications, and ease of transportation between job sites.

Q: Can wheeled excavators be equipped with different attachments?

A: Yes, wheeled excavators can be equipped with a variety of attachments such as buckets, grapples, hammers, and augers to suit different excavation tasks and project requirements.

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