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Excavator Track Roller – The Definitive FAQ Guide

Excavator track rollers are an essential part of an excavator’s undercarriage. They are utilized to find traction and support on rough surfaces and ensure smooth movement.

This guide answers some of the most common questions that you have about excavator track rollers.

This guide will help you understand the depth of the excavator track roller.

1.    What is an excavator track roller?

Excavator track rollers are important undercarriage components in excavators. The tracks of an excavator help to keep the machine stable while working on uneven terrain.

There are four main functions of a Track Roller: running the transmission mount, secondarily performing the function of a swing or swing arm pivot, supporting the gearbox, and transferring tractive power for the drive sprocket.

Track shoe and Track rollers work together to ensure excavation performance remains high no matter what weather conditions they may encounter.

They’re used to prevent excavator tracks from slipping off the ground.

The excavator track rollers come in several different sizes that range from 4 inches to 12 inches in diameter.

2.    What is included in the excavator track roller assembly?

Different parts are included in excavator track rollers. Some of these parts are listed below for your reference:

• Excavator Track Roller Shaft
• Excavator Track Roller Floating Sealing
• Excavator Track Roller Bimetallic Bushing
• Excavator Track Roller Plug
• Excavator Track Roller O ring
• Excavator Track Roller Lock Pin
• Excavator Track Roller Shell
• Excavator Track Roller Collar
• Excavator Track Roller Bushing Bronze

Excavator track roller construction is one of the most critical factors during track maintenance.

An exemplary excavator track roller assembly is the crucial part connected to the track.

Not only can it support the Excavator’s work efficiency, but it also can help you save much cost for the maintenance.

3.    What materials are used in making an excavator track roller?

Excavator track rollers used in undercarriage are made from steel and have a rubber seal insert to give the smooth motion.

The other parts of the Excavator are made using different materials with a combination of those materials. Some of these materials include brass, bronze, aluminum, copper, PTFE, polyurethane, etc.

The size and material of each type of excavator track roller vary depending on the make and brand of the excavator undercarriage.

The materials used in the excavator track roller are embedded with various characteristics. These characteristics include resistance to wear and tear, abrasion resistance, corrosion resistance, and load-bearing capabilities.

4.    Is noise associated with the excavator track roller?

Noise is typically associated with the track rollers because these are the parts that create friction between the rubber tracks and the steel links.

Track rollers tend to make more noise than the tracks do. Sound is a result of vibration being transferred from the upper carriage of the Excavator due to excess loading through the track roller and into the machine.

An excessive amount of vibrations can lead to damage to drive sprockets or tracks. Careful maintenance is essential to prevent premature wear on expensive parts listed above.

Noise is also reduced by the presence of good quality track chains and anti-vibration bearings or by adjusting the clearance between the track rollers and tires for proper operation of the Excavator.

5.    What is the cost associated with the excavator track roller?

The cost of an excavator track roller varies from model to model and manufacturer.

The significant factors that affect the cost of excavator track roller include material used in manufacturing, the shape of the roller, material characteristics, embedded strength, and warranty associated.

The cost of some of the excavator track rollers are listed below:

The price of an excavator track roller lies in the range of $15 to $150 per piece.

The cost of a high-quality excavator track roller lies in the range of $30 to $60 per piece.

The price of the bottom track roller lies in the range of $50 to $500 per piece.

You can choose anyone depending on your excavator model and needs.

6.    What type of oil goes into the excavator track roller?

Many different types of oil can be used in the excavator track roller, depending on the application. The oils are selected for the job that they will be doing.

The type of oil used in this component depends mainly on the local conditions.

The heavy Excavator may need special oil or synthetic oil and heat-resistant lubrication oils, especially in conditions where the temperature remains higher.

For example, in northern climates, where wintertime temperatures may fall below freezing point, a lubricant with special additives is required to prevent ice formation on the elements or on the machine itself.

In addition, to freeze in cold weather, the track roller must be frequently greased.

7.    What is the life associated with the excavator track roller?

The life of excavator track rollers is mainly associated with the materials that make up the roller, the size of the roller, how often they are used, and the conditions for which they were used.

The biggest enemy of rubber tracks is frost and temperatures below zero. That is why you need to use only high-quality steel that will not crack when exposed to such extreme conditions.

The only difficulty with Steel and Rubber Track Rollers’ life spans is poor quality or improper installation of these parts.

In general, the life associated with excavator track rollers lies in 3 to 5 years.

8.    What are the problems associated with the excavator track roller?

There are various problems associated with your excavator track roller. Some of the main issues are listed below:

Over time, the wheels can wear down or become damaged from repeated use.

Other main problems associated with excavator track rollers include heat buildup on the wheels, worn bearings, broken components, and slipping off the track.

However, the excavator track roller can also be damaged by foreign objects, improper storage, or overloading.

Track rollers can also wear out due to lack of lubrication or rubber deterioration from oil, grease, and water.

Any problems with or damage to the track rollers will cause the Excavator to move unevenly and can be a safety concern for the operator.

9.    What characteristics are embedded in excavator track roller oil?

Excavator track roller oil is a kind of small-sized, high-viscosity lubricating oil.

Its quality level is the same as that of industrial gear oil, its viscosity below 255°C is not less than 100S, but thickness above 255°C is 10S – 15S.

Generally, this kind of small-sized lubricating oil and industrial gear oil are unified into large-scale usage as lubricating oils.

Excavator Track Roller Oil is designed for high load capacity and long life, particularly in the track rollers used on sizeable earthmoving equipment.

Oil also keeps the track rollers in good condition and ensures that every component in your undercarriage works better.

10.  What are the maintenance requirements of the excavator track roller?

Maintenance requirements of excavator track roller vary depending on the frequency of usage, working environment, and intensity of function.

There are stringent requirements for maintaining the undercarriage of an excavator.

Regularly scheduled inspections and lubrication procedures are mandatory to ensure that your biggest asset is appropriately protected.

At the first sign of excessive wear, tracks, sprockets, other components must be replaced immediately.

The track rollers bear the weight of the equipment for moving and digging. In general, the ordinary maintenance frequency is 2~6 months, depending on the operating condition.

The maintenance requirements also include replacing worn rollers, cleaning other parts, applying protective coatings to various components such as bearings, bushings, shafts, and bolts.

11.  What are the specifications of the excavator track roller?

The desired measurements of an excavator or heavy machine undercarriage track roller are listed in the table below:

The most common size for a rubber track roller is 10 inches.

There are also ones that can go up to 18 inches, but these are mainly used on earthmoving equipment specialized for mining various ore deposits.

These specifications vary from brand to brand. You must select one which is up to the mark or compatible with your excavator model.

12.  What do you mean by excavator track roller O ring?

O ring acts as a seal that prevents leakage of any liquid and prevents entry of any foreign particles, including dirt, sand, and debris, from entering inside.

However, if the machinery gets damaged, you will see that the excavator track roller O ring must also be removed and replaced with a new one.

The most frequent problem occurs when the machinery gets overheated or some friction, so the entire assembly seems to get stuck together.

A good O ring keeps sufficient lubrication between the rollers and supports to keep them working efficiently when they run on the tracks.

13.  What is the role of the Lock pin in an excavator track roller?

The lock pin holds the entire assembly together and keeps it from falling out, even when there is no tension on the belt.

If the Excavator has lifted something or is on a slope, there may be a risk that the roller will get off track.

This is why track rollers are equipped with lock pins – in fact, every rubber track roller has at least one Lock pin (usually a couple of them) positioned at each end of the roller guides.

When the lock pin is in place, its purpose is to hold the track roller in place until the Lock is disengaged.

Excavator track roller lock pin increases the lifetime associated with your track roller.

14.  How to install an excavator track roller?

To successfully install an excavator track roller in your excavator undercarriage, begin with the procedure described below:

First, take out the damaged or faulty excavator track roller. To do this, isolate the rubber track by putting a hydraulic jack beneath the Excavator to raise it from the ground.

Then remove the frame assembly by using the correct type of excavator tool kit at hand.

Now install the roller and screw it with nuts and bolts at desired or optimum torque.

Now reinstall all the isolations into your Excavator and make sure everything is adjusted.

Then start your Excavator and test your installation to determine everything is in operational condition.

15.  What is the role of the shaft in the excavator track roller?

The shaft is a critical component of the excavator track roller. The post is circular.

The shaft in the excavator track roller is to take energy from the motor and transfer it to moving the Excavator.

This connection also transfers loads to the cutter housing, assuring that components remain equally stressed and are capable of prolonged service without catastrophic failure.

The shaft allows the excavator operator to control the speed of the roller by using forward/reverse movement.

The shaft is an integral part of the track roller. It supports its weight and tracks, compresses smoothly under high contact pressure, has relatively low frictional loss while running smoothly, and is formed in a single piece.

16.  How to choose an excavator track roller?

Excavator tracked roller is one of the essential undercarriage components. It mainly plays a role in isolating the machine from rock impact and absorbing shock.

And track rollers failure would result in excessive vibration and shuttle phenomenon, affecting the normal working of excavator machine.

When choosing excavator track rollers for your Excavator, there are three significant factors to consider.

The first is the size of the machine; you want enough room between the frame and the Track Rollers to accommodate for wear to ensure maximum efficiency.

The second factor is material; steel rollers are commonly used as highly resistant to wear and tear.

The third factor is undercarriage components; if this is a replacement part or simply a new feature, make sure to get the proper fitment for your machine.

17.  Is friction associated with the excavator track roller?

Yes, the friction is associated with the excavator track roller.

The amount of friction depends on the material used for track rollers and the tracks being appropriately lubricated.

Friction should be checked for it being too much or too little on the track roller. This will depend upon the type of work being done as much as environmental conditions.

In general, any excess friction associated with an excavator track roller is considered to be harmful.

Excessive friction can make steering difficult or impossible. It is recommended to thoroughly cleaning the excavator tracks as well as the track rollers.

If this does not resolve the problem, a detailed inspection of the excavator undercarriage should be performed.

18.  What is the role of seal in excavator track roller?

A seal is designed to provide a barrier between an excavator’s working parts, which ensures that the parts cannot be contaminated or damaged.

It also seals off the joint between two pieces so no lubricant can escape or outside dirt/sand/grit can enter.

The seal is fitted into a slot on the excavator track roller and is pushed against another similar part of the excavator machine by a metal pin that also fits into a hole in the excavator track roller.

Metal shims are used to adjust its position and make sure it is precisely the correct height above the surface of the excavator track roller.

19.  What do you mean by a plug-in excavator track roller?

A plug-in excavator track roller is also usually referred to as an undercarriage component.

The plug-in excavator track roller is designed to prevent the movement of the assembly after installation.

It consists of side frames and plates made out of cast steel or pressed parts.

The primary purpose of plug-in track rollers for excavators is to absorb impact force between the steel tracks and the ground when working on uneven surfaces by preventing damage to the undercarriage components.

It is an important piece (usually two) that will be found at either side of the track roller, either bolted or bolted and keyed into a track support structure.

20.  What do you mean by the Hs code of the excavator track roller?

To classify and define international trade goods, many countries use an HS or HTS code.

These codes are created by the World Customs Organization (WCO) and are used by customs agents to help them know what they’re dealing with.

To find what the HS Code is in another country, you can use a tariff database.

For example, Customs Info Database offers a look-up tool for international customs codes, allowing businesses to determine what their product’s HS Code is in other countries.

It is an international coding system that provides customs officers with a way to classify all traded goods.

The HS system is a multipurpose nomenclature that gives a detailed description of the product being shipped.

The customs officers must code every traded commodity with the appropriate HS code before clearing or crossing any international borders.

21.  What causes the failure of an excavator track roller?

An excavator track roller can fail due to mechanical overload that may result from defective or misused equipment, improper operation, or product abuse.

An overloaded machine will put increased stress on the entire drive train, which in turn can cause the failure of the track rollers and other undercarriage components.

An excavator’s undercarriage components are subjected to continuous movement during digging, and any problems with the machine’s power train will be quickly reflected in these parts.

Lack of lubrication, incorrect track tension or too great a bulldozer to roller weight ratio can all contribute to the premature failure of excavator rollers.

While some of these failures may be sudden, early warning signs can often be detected before the problem becomes critical and remedial action is taken.

22.    Can I get my Excavator track roller repaired?

Yes, you can get your Excavator track roller repaired. If it is a case of wear and tear on the undercarriage components, then a professional technical team will help you achieve this.

If you want to repair it yourself, you need a professionally designed tool kit for this.

If your excavator track roller’s warranty exists, you can get it replaced free of cost.

The amount of expenditure depends on the extent of damage or fault. If the damage is too much, then the thing you need to do is to get your Excavator track roller replaced.

Repairing your excavator track roller on time will help you save many costs and the downtime associated with it.

23.  What do you mean by bushing bronze in excavator track roller?

The bushing, also known as a bronze bushing in excavator track roller, is a critical component indirectly supporting the universal joint.

The bushing is a simplified construction of a cylindrical sleeve split in two by an annular groove.

The sleeve is formed by cutting and shrinking a groove cast into a molten mold tool.

The data of the inside and outside diameters and height can be adjusted through the specification of the inside and external rake angles.

The bushing material must have high lubricity, wear resistance, creep resistance, and corrosion resistance.

Bronze bushing Has good hardening properties, so it is suitable for the working condition that involves repeated load and impact.

24.  What is the role of the collar in the excavator track roller?

The collar of the excavator track roller takes the weight of the loaded and unloaded machines and prevents slipping on the muddy ground.

It prevents wear of track as well as drive sprockets.

The collar is a crucial assembling part of the excavator track roller. It connects the rubber track to the roller.

It can withstand high pressure, but some common problems occur, such as spring rusting, rotting, cracking, breaking, etc.

The collar in an excavator track roller holds the bearings and seals from the structure of the Excavator. It also contains the sprocket spline that allows the outer rollers to spin freely as they are dragged through the dirt.