Cat 3D Mastless Motor Graders

02 March 2021

The New Cat® 3D Mastless Motor Graders

Caterpillar, in conjunction with Hastings Deering, have introduced new Cat GRADE with 3D for motor graders, allowing contractors to realize improved grading efficiency, accuracy and productivity of automated grading systems without the limitation associated with GPS masts.

More than a decade ago, Caterpillar revolutionised the operation of motor graders with the introduction of joystick controls and a suite of advanced machine control solutions delivering enhanced operability and boosting productivity. Since then, technology has evolved rapidly, and the construction industry has embraced new innovations that simplifies work and finish grade with greater accuracy and higher output.

Cat technology development continues apace in the new Cat 3D Mastless Motor Graders with the latest machine control and guidance release offering even greater precision and efficiency.


Caterpillar Product Specialist, Darren Hodge, says the new machines will deliver greater accuracy for the operator.

“The new Mastless GRADE with 3D system on Cat motor graders integrates the GNSS receivers and IMU grade sensors that work to compensate for the machine’s acceleration and position changes to deliver a superior finish.

“The operator can position the grader and blade in the most productive position with no compromise to grade quality and with no masts to interfere with visibility or performance,” Mr Hodge explained.

“Wheel lean, drawbar offsets and frame articulation can be positioned without restriction from masts or cables.” 

“This expands the use of the grader in finishing applications such as side slopes and drains where guidance was not previously possible due to the mast positions,” Mr Hodge added.

cat mastless grading monitor


Automatic blade control reduces operator inputs and the number of passes to finish the job - saving time and money.

The operator also benefits from the new Android touch screen display which puts the design plan clearly in front of the operator and operates like a tablet. Grade control buttons are now integrated into the joystick controls for seamless operation.

“This means the operator can focus on the job at hand without worrying about constant grade checking,” Mr Hodge said.

Mastless GRADE with 3D means operators get to the design plan faster and with more accuracy and increased efficiency,” Mr Hodge said. 

“This also reduces re-work costs, fuel, labour and material costs and of course, boosts productivity.” 

“Importantly it can be used on all phases of the job and in more applications, including bank slope, mixing materials, cutting passes, ditch building, back slope and high bank,” Mr Hodge said.

The mastless integrated system allows for closer proximity work such as alongside buildings while maintaining accurate grade.

Having the technology factory integrated eliminates messy, expensive retrofits of aftermarket systems that do not necessarily integrate well with existing machine systems. 

“When factory fitted, Cat technology solutions are fully calibrated for optimal performance and, most importantly, all supported with factory warranty and backing of the dealer network,” Mr Hodge said. 

The GNSS receivers are integrated into the cab roof and front frame for better line of sight and nothing needs to be removed at the end of the shift or for transport.

The new Mastless GRADE with 3D feature available on T4f emission version models is now available from Hastings Deering and comes fitted with industry exclusive E-Fence technology.

The new Mastless GRADE with 3D out of the factory comes standard with an E-Fence feature that prevents the moldboard from hitting the tyres and ladders and stops the circle from potentially damaging the link bar,” Mr Hodge said.

“E-Fence helps protect the machine so you can focus on the task at hand,” Mr Hodge added.

“The new Mastless GRADE with 3D and E-Fence is another example of Caterpillar innovation and technology leading the way; setting a course for our customers to be more successful.”

For more information on the new Cat 3D Mastless Motor Graders, visit Cat Mastless Motor Graders

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