RB - Bonomi


Fields of application of our shims:

Pins of mini excavators, crawler and wheel loaders, bulldozers, backhoe loaders, dumpers, dozers, graders and other earthmoving and construction machinery.


Shims, named also washers, are thin plates made of steel, nylon or bronze. They are quite simple yet essential, since they ensure the stability of the pin they are put in. Excavator shims are perfect to close the gaps and make the surface even reducing the backlash between arm and bucket of an excavator to a minimum.

The correct use of shims eliminate the gaps helping to protect the mechanical parts from wearing off and mprove the performance of the construction equipment.


With almost 1,000 different types of steel treated shims, which different sizes and height, we offer the biggest stock on the market covering all pin sizes.

Shims catalogue


Steel shims are made of tempered steel, which guarantees a better resistance, grip and duration.

They are straight, thus fixed, and smooth, thus it is possible to handle the safely, even without gloves.

We can produce custom shims (e.g. zinc-coated) according to your needs.


On stock we have bronze or plastic washers, which can also be custom made.

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