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À LA PELLE, the specialist in hydraulic excavator attachments Who is Arnaud Dufour
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Coupling and adapting

Bolt-on mounting plate

A mounting plate bolted on the back of a bucket: a row of galvanised bolts with their nuts, two ears drilled for the pins, and the bolts and spanners set on the bench beside it.
It comes off, and it can be checked:
a bolted joint lives, a weld does not.
Synthetic image.

The same function as a welded mounting plate, without a welding set and without any permanent modification.
It can be taken off, which is sometimes the whole question.

Other names for this tool: screwed plate, bolted interface, removable plate.

The essentials
Family
Coupling and adapting
Classes or machines concerned
All
Fitting
Bolted to the tool, removable
Power source
None

Identify your coupler →

01 Use

What it is for

On the left, the bolt-on mounting plate can be removed and is checked by its tightening. On the right, the welded mounting plate is permanent and alters the steel of the tool. Computer-generated image.
the bolt-on mounting plate can be removed and is checked by its tightening the welded mounting plate is permanent and alters the steel of the tool
Left: the bolt-on mounting plate can be removed and is checked by its tightening.
Right: the welded mounting plate is permanent and alters the steel of the tool.
The same function as welding, but it can be taken off.
Computer-generated image.

It is useful when welding is not desirable:
a tool under warranty, a hire tool, treated steel, or simply no workshop available.
It also makes the operation reversible.

For a hire company, reversibility changes the nature of the decision:
a tool can go back from one standard to another depending on the machine it is assigned to.

Bolting is checked, welding is forgotten. A bolted assembly that takes alternating forces calls for a periodic torque check.
It is the price of reversibility, and it is worth knowing beforehand.

02 Key technical data

On which machine?

On a machine from 1,6 to 10 t: a mounting plate from 22 to 170 kg.
Its role: to adapt to all couplers.
It comes in a Klac coupler version, to be checked with you.

What the tool does

It is used to couple and adapt tools.
It bolts onto the tool and can still be removed.

What is needed on the hydraulic side

It needs no hydraulic connection.

Figures taken from 7 models on the market.
Your study sets the exact value for your machine.

How to read these values →

03 Your study

Have your machine checked.

Tell us which tool is to be equipped, what coupler you have, and whether the tool must be able to change standard later.

What we need to answer you
  • Your machine Its exact make and model.
  • What is fitted What equips the machine today.
  • The work What the machine is used for.

Without these details, the study still begins: we will ask you for them.

Book an appointment with the specialist

Or call 01 84 16 55 49 · our lines are open 7 days a week, from 7h to 22h.

Written study within 3 working days, once the file is complete.

04 Choice

What determines the choice

  • 01 — The reversibility sought If the tool will never change standard, welding is simpler.
  • 02 — The condition and type of the tool's steel Some steels weld badly:
    bolting then becomes the right answer, not a makeshift.
  • 03 — Access for the torque check A bolt that cannot be reached will not be checked.
  • 04 — The lead time No workshop, no downtime:
    it is often the quickest solution.
05 Check

What is checked before ordering

  • The designation of your coupler Read off it.
  • The thickness and the possible drilling on the tool They govern the feasibility.
  • The torque and the class of bolts They are part of the supply, not of improvisation.
  • The checking interval To be fixed at the time of fitting.
For a hire company
Recognising your coupler
To go further
A question about an attachment? 01 84 16 55 49 Send my photos