How Much Machine Time Should a Tooth Change Take?
When a hammerless GET system is worth converting to
C-REX uses a reusable hammerless pin.
But hammerless describes only part of the design.
The C-REX pin has a plectrum shape that creates a no-wobble connection between the tooth and adapter. It can be removed and reused instead of being replaced with every new tooth.
That distinction matters because the value of a locking system is not simply that it eliminates traditional hammer work. It must hold the tooth securely during operation and make the eventual changeout faster, simpler and more predictable.
A bucket tooth may work for hundreds of hours.
Eventually, somebody still has to remove it.
That part of the job does not receive much attention when systems are compared. The tooth price is on the invoice. Wear life may be recorded. But the people, tools and stopped-machine time required to complete a change can disappear into the normal work of the maintenance team.
If changing teeth requires two people, a hammer, additional service equipment and an hour with the machine stopped, that is part of the system’s operating cost.
A well-designed hammerless locking system may reduce some of that burden. But the word hammerless alone is not a reason to convert a bucket.
The real question is whether the locking method improves something that matters enough to justify the conversion.
A changeout is part of system performance
Most GET discussions begin with the tooth: purchase price, wear life, penetration and usable steel.
Those things matter. So does what happens when the tooth reaches the end of its service life.
A tooth change may be completed during planned maintenance with little effect on production. It may also happen unexpectedly in the pit, involve several people and keep the machine waiting longer than the actual installation should require.
The operation should understand:
How often teeth are changed.
Whether changes are normally planned or unplanned.
How many people are involved.
How long the machine is unavailable.
What tools and service equipment are required.
Where the work normally takes place.
Whether teeth, pins or locking components become difficult to remove.
Whether the change creates additional work on the adapters.
How reliably the new components lock into place.
Convenience is useful, but it is difficult to measure.
Labor time, machine time, tools and change frequency are much clearer.
Start with the changeout you already have
Before evaluating a hammerless alternative, observe a normal changeout on the current system.
Do not rely only on how long somebody remembers it taking. Record the process from the time the machine becomes unavailable until it is ready to return to work.
That record should include:
Start and finish time.
Number of people involved.
Teeth changed.
Tools used.
Service vehicle or lifting equipment required.
Problems removing worn components.
Condition of the pins or locking system.
Work required on the adapters.
Delays unrelated to the GET system.
Whether the machine was already stopped for other maintenance.
That last point matters.
If the teeth are changed during a larger scheduled service, the operation should not automatically assign the entire maintenance stop to the GET system. At the same time, the labor and work required to complete the change do not become free simply because another repair was being performed.
The objective is to separate the time that belongs to the tooth change from the time that does not.
What does the C-REX locking system actually change?
C-REX uses a reusable, plectrum-shaped hammerless pin to lock the tooth to the adapter.
The no-wobble design is important. A locking system still has to maintain a secure connection under load; ease of installation cannot come at the expense of reliable retention.
When the tooth reaches the end of its service life, the C-REX pin can be removed without traditional pin-and-hammer work and reused with the replacement tooth.
Depending on the existing system and field conditions, that may reduce the number of tools needed, shorten the changeout or allow the work to be completed with fewer people.
Those are possible operating benefits. They still need to be verified on the machine.
The C-REX locking method does not automatically mean:
The tooth will last longer.
The tooth will penetrate better.
The adapter will experience less wear.
Components will never become difficult to remove.
One person should perform every change alone.
Every quarry will save the same amount of time.
The entire GET system is right for every application.
The reusable, no-wobble hammerless pin is one strength of the C-REX system. The complete system must still be correctly matched to the machine, bucket, material and operating conditions.
A tooth that is easy to change but poorly matched to the application is not a good conversion. Neither is a system with a convenient lock but weak parts availability or unacceptable adapter performance.
The complete system still has to do its job.
One documented quarry example
A live quarry trial reported by Volvo Construction Equipment provides a useful example of why the changeout process deserves attention.
The trial was conducted with SMT Great Britain and Holcim on a Volvo EC480 excavator at Hillhead Quarry in the United Kingdom. Volvo reported that technicians could change the VTS 2 teeth in approximately 30 minutes using its hammerless locking system. The older systems referenced in the report required a two-person process taking about one hour.
That is a meaningful difference in that application.
It should also be kept within its proper boundary.
This was one documented trial, on one machine, involving a specific system and set of operating conditions. It does not prove that every hammerless system will cut every changeout time in half, and it is not presented as a C-REX result.
What it does show is that the changeout method can be measured. It can affect labor, machine availability and the practical work required from the maintenance team.
Those effects belong in the conversion decision.
Calculate the current changeout burden
A practical evaluation does not require a complicated financial model.
Begin with three operating measurements:
Technician time per changeout
Number of people involved × hours required
Stopped-machine time per changeout
Time from the machine becoming unavailable until it is ready to return to work
Annual changeout frequency
Number of planned and unplanned tooth changes during a representative operating period
From there, the operation can estimate:
Annual technician hours
Technician time per changeout × number of changeouts
Annual machine hours affected
Stopped-machine time per changeout × number of changeouts
Service-truck time, special tools and other support can be added when the records are reliable.
Planned and unplanned changes should remain separate. An unplanned tooth change in the pit may have a different operating consequence from work completed during scheduled maintenance.
The calculation will not capture everything perfectly. It does not have to.
Its purpose is to determine whether changeout time is a minor inconvenience or a repeated operating cost large enough to influence the system decision.
When does a faster change justify converting?
Reducing a one-hour process to 30 minutes sounds positive. But saving 30 minutes once a year will not carry the same value as saving it every few weeks across several machines.
The answer depends on frequency and consequence.
A hammerless conversion becomes more interesting when:
The machine consumes several sets of teeth each year.
Tooth changes regularly interrupt production.
Two or more people are needed for the current process.
Worn pins or locking components are difficult to remove.
The operation wants to reduce traditional hammer work.
Service access around the bucket makes the current process difficult.
Unplanned changes are creating repeated support calls.
Faster replacement would return the machine to work sooner.
The alternative system also performs properly in wear, penetration and adapter protection.
The case becomes weaker when:
Teeth are changed infrequently.
Changes happen comfortably within planned maintenance.
Current changeouts are already quick and reliable.
Conversion requires substantial adapter work or inventory replacement.
Local parts and technical support are uncertain.
The hammerless feature is attractive, but the tooth profile or system is not right for the application.
The expected labor and machine-time benefit is too small to justify the transition.
There is no rule of thumb that says a modern locking system must replace an older one.
The feature has to solve a real operating problem.
Conversion costs still count
A hammerless system may reduce future changeout work, but converting the bucket creates work of its own.
The decision should include:
Removal of the current adapters.
Preparation or repair of the lip.
Installation of the new adapters.
Machine downtime during conversion.
New tooth, adapter and locking-component inventory.
Training or instruction for the maintenance team.
Availability of replacement components.
Tools required by the new system.
Support if the first installation or changeout does not go as expected.
A faster changeout can be valuable without paying back a poorly planned conversion.
Before proceeding, the operation should understand how frequently the benefit will occur and how long it may take to recover the initial transition cost.
Test the process on one machine
The cleanest way to evaluate the changeout difference is to measure it.
First, record the current process on the selected machine. More than one observed change is useful when possible because one unusually easy or difficult changeout can distort the comparison.
Then evaluate C-REX under similar conditions.
Use the same basic record:
Number of people.
Total elapsed time.
Machine time affected.
Tools and service equipment.
Condition of the components being removed.
Problems encountered.
Condition of the adapters and locking system afterward.
Feedback from the technicians doing the work.
The technicians’ opinion matters here.
They can explain whether a process is easier, more predictable or less physically demanding. But their feedback should sit beside the time and operating record, not replace it.
The same discipline applies to the supplier.
Do not time only the best installation with a factory representative standing beside the bucket and present that as the normal future result. The operation needs to know what the process looks like when its own people perform it under normal conditions.
Where Core Parts Direct and C-REX fit
Core Parts Direct does not ask a quarry to convert a bucket simply because C-REX uses a reusable hammerless pin.
We first need to understand the machine, bucket, material, current system and frequency of changeouts. Then we can determine whether the no-wobble plectrum-shaped pin—and the C-REX system around it—could remove enough work or operating cost to justify a controlled evaluation.
The existing system becomes the benchmark.
C-REX is installed on one properly selected machine, and both systems are compared using measurements agreed upon before the evaluation begins.
That gives the quarry a practical way to determine whether the reusable locking pin delivers value in its own operation, without converting the entire fleet first.
The locking system is only one decision factor
The reusable C-REX pin can offer a real advantage. In the right application, faster changes, a no-wobble connection and less reliance on traditional pin-and-hammer work may reduce labor demands and return the machine to production sooner.
That advantage still has to sit beside the rest of the evidence:
Tooth wear life.
Usable steel.
Penetration.
Teeth lost or broken.
Adapter condition.
Bucket and lip protection.
Component cost.
Parts availability.
Conversion cost.
Support.
A quarry should not accept a poor-performing tooth because it is easy to change.
It should also not ignore a better changeout process simply because labor and stopped-machine time are harder to see than the price of the component.
Measure the process that exists today. Measure what C-REX changes. Then decide whether that difference is large enough, frequent enough and useful enough to justify converting the machine.
That is the real value of the C-REX locking system.
Not simply that it is hammerless, but that its reusable, plectrum-shaped pin provides a no-wobble connection while removing work from the changeout process.
Source for the documented example: Volvo Construction Equipment — Groundbreaking benefits of Volvo Tooth System 2 revealed in 3D scanning trial
