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Caterpillar 12M3 Motor Grader

Maker:  Diecast Masters
Model No:  85519
Scale:  1:50
Review Date:  August 2017

Diecast Masters Index
Earthmoving Equipment Index

Cranes Etc Model Rating
Packaging   (max 10) 9
Detail   (max 30) 24
Features   (max 20) 15
Quality   (max 25) 19
Price   (max 15) 11
Overall   (max 100) 78%


Caterpillar 12M3 and 18M3 Motor Graders Video  [Youku video]
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Caterpillar branded tin.
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Nice smaller sized grader.
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Steering angle is very limited.
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Tilting front axle.
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That man is in the cab again.
Ripper down.
Very nice hydraulics.
Its bigger brother, the 18M3, is on the right.

The Caterpillar 12M3 Motor Grader weighs 19.3 tonnes.  It is used for earthmoving, roadwork, and material handling operations where maintenance of haul roads or accurate levelling of surfaces is required.


The model comes in excellent packaging.  There is an outer shipping carton which contains a tin which is protected by a nylon bag.  The tin is high quality and includes pictures and details about the real machine.

The review model had no missing parts or defects.

The only thing missing is information for the model, but a mini catalogue of the Diecast Masters range is included.


There is some detail underneath.    The rubber tyres are nice enough, and they are mounted on plastic wheels.  The mud guards are all soft plastic.

At the rear the ripper is metal and the five shanks have nice teeth.  The rivets are painted so they look unobtrusive. The engine block has metal grab rails and the grilles are formed of graphics. 

No hydraulics are visible at the steering pivot point.

The cab roof is plastic, and the detail throughout the cab is good and it includes the usual operator. 

The front end has a counterweight fitted and the drawbar and circle are modelled very well.  The moldboard has rivet details on the blade. The detailing of the hydraulics is very good.


The front axle has very limited steering capability but it is able to oscillate up and down.  The mechanism to lean the tyres is modelled, but was non-functional on the review model.

The rear wheels are in linked pairs with very limited oscillation.

The grader can steer across the pivot point behind the cab.  The angle is shallow.

At the rear the ripper can be raised and lowered.

The moldboard has a full range of movement.  It can be raised and lowered, and a small amount of side to side tilt is possible.  It can also rotate on the circle, be extended to one side or the other, and have the face tilted forwards and backwards.  The side shift function was very stiff on the review model.


It is a reasonably robust model with a high metal content, and a number of plastic parts.

The paint is good, and the graphics are sharp.


It is reasonable value.


This is a nice small grader model and as usual for Diecast Masters, the presentation and packaging is excellent.


The model became available in 2016.

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Decent tyres and wheels.
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Ripper raised when not in use.
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Profile view.
Nice detailing around the engine.
On the road - working.
On the road - resting.