Grader Blades & Cutting Edges for Motor Graders

Grader Blades for Precision Grading Applications

Grader blades are wear parts mounted on the moldboard of a motor grader. They perform the cutting, grading and profiling work required to shape and maintain road surfaces. Unlike many other cutting edge systems, motor grader blades are designed to control material flow along a long cutting edge with a high level of accuracy.

The parent category Wear Bars, Cutting Edges & Wear Profiles includes wear bars, weld-on cutting edges, bolt-on cutting edges, wear profiles and additional wear protection components for construction equipment.

Curved Grader Blades and HD Versions

Curved grader blades help guide material along the moldboard and are commonly used where controlled material movement and surface finishing are required. HD versions are intended for higher wear conditions where standard blades may not provide sufficient service life.

Selection should not rely solely on the reference number. Length, width, thickness, blade profile and bolt pattern should also be verified.

Difference Between Grader Blades and Bolt-On Cutting Edges

Grader blades are specifically designed for motor grader moldboards. Universal bolt-on cutting edges can be found in the category 6 Inch Bolt-On Cutting Edges. Dedicated grader cutting edge products are available in Bolt-On Grader Blades.

For weld-on applications, suitable products can be found in Wear Bars & Cutting Edges and Wear Bars & Cutting Edges Cut to Size.

Selection by Reference Number and Dimensions

Many grader blades are identified by the existing reference number. This category includes products suitable for references such as 5D9554, 5D9554HD, 3G7966HD and 5D9553HD.

Before replacement, the length, width, thickness, hole count, hole spacing, hole diameter and blade profile should be checked. Different moldboards, machine generations and previous repairs may result in different blade configurations.

Typical Applications for Grader Blades

Grader blades are commonly used in road construction, road maintenance, gravel road construction, shoulder maintenance, site preparation and surface profiling. Depending on the application, the priority may be precise grading, controlled material movement or increased wear life.

Additional Cutting Edge Categories

For manufacturer-specific cutting edges, see CAT Cutting Edges, Komatsu Cutting Edges, Volvo Cutting Edges and Liebherr Cutting Edges.

Matching fasteners for bolt-on cutting edges are available in the category Bolts & Nuts.

Check Before Replacement

Before replacing a grader blade, the reference number, dimensions, bolt pattern and blade profile should be verified. For curved grader blades, the blade geometry must also match the existing moldboard configuration.

Accurate measurement of the existing component helps ensure proper fitment and reduces installation work.

Frequently Asked Questions About Grader Blades

What are grader blades used for?

Grader blades are used on motor graders for cutting, grading, profiling and distributing material during road construction and maintenance operations.

What is the difference between a grader blade and a bolt-on cutting edge?

Grader blades are specifically designed for motor grader moldboards, while bolt-on cutting edges are used on a wider range of buckets, blades and attachments.

When should a curved grader blade be used?

Curved grader blades are used when material needs to be guided, distributed or windrowed along the moldboard.

Which measurements are required for selection?

Reference number, length, width, thickness, hole count, hole spacing, hole diameter and blade profile should be checked before ordering.

Where can I find bolt-on grader cutting edges?

Dedicated grader cutting edge products are available in the category Bolt-On Grader Blades.

Trademark and Compatibility Notice

Where manufacturer references are mentioned, the products are LIS® replacement parts unless explicitly identified as original parts. Brand names such as CAT® are used solely to identify compatibility.