Motor Grader: What It Is, Sizes, Uses and UAE Rental Costs
A motor grader is a long six-wheel machine with an adjustable blade that levels roads and sub-base to precise grades. Sizes, uses and UAE hire costs.
By Sufian5 min read
A motor grader, often just called a grader, is a long machine on six wheels with a large adjustable blade slung under its belly. The blade shaves and spreads material so that a surface ends up flat, smooth and at the right slope. It is the machine that finishes a road base before asphalt goes down.
People searching for a "grader machine" usually mean this one. A grader is not a loader and does not dig. Its job is accuracy, not volume.
What a motor grader is used for
- Final levelling of road sub-base and base to the design levels, before paving.
- Building and maintaining desert tracks and haul roads, where wind and traffic ruin the surface quickly.
- Spreading and shaping fill on large sites, car parks, laydown yards and runway shoulders.
- Cutting drainage ditches and shaping side slopes.
- Mixing and windrowing material to blend stabilised layers.
- Scarifying: a rear ripper or front scarifier breaks up hard surfaces.
On infrastructure projects the machine often has GPS or 3D grade control, which steers the blade to the digital design and cuts the number of passes.
Main parts
The blade is called a moldboard. It can be raised, lowered, tilted, slid sideways and rotated, which is what lets the operator cut a ditch or crown a road. The blade sits under a frame between the front and rear axles, and the front wheels can lean to help the grader hold a line against the slope. The cab is at the rear of the frame. Most machines are articulated, so the front and rear halves bend to get into a corner or to offset the wheels against the blade's side force.
Motor grader sizes
| Class | Operating weight | Blade length | Engine power | Typical work |
|---|---|---|---|---|
| Small | 8 to 12 tonnes | 2.4 to 3.1 m | 100 to 140 hp | Estate roads, maintenance, tight sites |
| Medium | 14 to 18 tonnes | 3.7 to 4.3 m | 150 to 220 hp | Road construction, most UAE contract work |
| Large | 20 to 30 tonnes | 4.3 to 4.9 m | 250 to 350 hp | Mine haul roads, big highway packages |
The 14 to 18 tonne class with a 3.7 to 4.3 metre blade, the size of the Caterpillar 140 and 140K, is the one you will see most on UAE road projects.
Motor grader or other machines
| Task | Best machine |
|---|---|
| Final trimming of road base | Motor grader |
| Rough levelling of a small plot | Skid steer or backhoe loader |
| Moving large volumes of material | Wheel loader or dozer |
| Digging trenches | Excavator |
| Compacting the finished layer | Road roller |
On a road job the grader, a water bowser and a roller work as a team: the grader shapes, the bowser wets the layer to the right moisture, and the roller compacts it.
How to choose a size
The blade width should suit the road. A 3.7 metre blade can handle a single lane in a pass, while a smaller 2.4 to 3 metre blade suits estate roads and compounds. Think about the following before hiring:
- The width of the work. A narrow site needs a short wheelbase and a small blade.
- The accuracy required. For a final level within a few millimetres, ask for a machine with grade control, which most rental graders do not have, and plan for a surveyor.
- The material. Hard, dry sand-and-gravel mixes need a heavier grader with more horsepower.
- The transport. A 15 tonne grader needs a low-bed trailer, and graders are long, so check the route.
UAE rental rates and used prices
Graders are the scarcest machine in this group. There are only a handful listed on the site at any time, so the table below is based on a small sample. Rates depend on size, age, the operator, fuel, delivery and whether grade control is fitted. Use the figures as a rough guide and ask for several quotes.
| Size | Listings | Rent per day | Rent per week | Rent per month |
|---|---|---|---|---|
| All Motor Graders | 90 | AED 1,500 | AED 9,000 | AED 28,000 |
Browse motor graders for rent and motor graders for sale. For a hired grader, ask the supplier to confirm the blade edge condition, because a worn cutting edge cannot produce an accurate level. Estimate the length of the hire in the equipment rental cost calculator. Given the small number available, book early and be flexible on the model.
Rent or buy
Rent for almost every contract. A grader is an expensive machine that sits idle between road jobs, and it needs a skilled operator who is hard to replace. Buy only if you maintain a private road network, a mine or a very large estate continuously. Compare the figures in the equipment ownership cost calculator before you commit. If you do buy used, inspect the blade circle, the moldboard slide rails, the articulation joint and the tyres, because those wear first.
Operator and safety
Grading is a skilled job, and a good operator matters more than the machine. Most suppliers in the UAE will not release a grader without an operator, and the operator should hold the valid certificate for this machine type. Hazards include working next to traffic, slopes, buried services and poor visibility behind the machine. Use a banksman near live traffic.
Common questions
What is a motor grader?
A motor grader is a six-wheel machine with a long adjustable blade under its frame, used to level and shape road bases, tracks and large sites.
What does a grader machine do?
It cuts and spreads loose material so the surface is flat at the right level and slope. It finishes the surface rather than digging or hauling.
What is the difference between a grader and a bulldozer?
A dozer pushes large volumes of material in front of a fixed blade. A grader has a longer, adjustable blade and gives a much more accurate finish.
How much does a motor grader cost to rent in the UAE?
Published listings show around AED 1,250 a day and AED 23,000 a month, before VAT, but the sample is small and varies with size and operator.
What size grader do I need?
For most road and plot work in the UAE, a 14 to 18 tonne grader with a 3.7 to 4.3 metre blade is the standard choice.
Looking for a grader and operator for specific dates? Post a request and suppliers will quote.
