The New Cat 3D Mastless Motor Graders

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

Source: Hastings Deering

More than a decade ago, Caterpillar revolutionized the operation of motor graders with the introduction of joystick controls and a suite of machine control solutions. 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.

Performance gains

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

“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.”


“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.”

Expanded technology, more productive

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. Mr Hodge said:

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


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


“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.” 

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

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

“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.” 

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. Mr Hodge said:

“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.” 


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


“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.”

Source: Hastings Deering'
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