DX: INTERNAL ROLLER BURNISHING TOOLS 

Superior Surface Finish and Precise Dimensional Control for Internal Bores

YAMASA DX Roller Burnishing Tools are professional solutions developed to achieve superior surface finish, high dimensional accuracy and increased surface strength on internal bore surfaces.

The roller burnishing process is based on applying special precision rollers to the workpiece surface under controlled pressure. During this chipless process, microscopic surface irregularities inside the bore are corrected through plastic deformation.

One of the most important features that distinguishes DX Roller Burnishing Tools from similar products is the special precision rollers manufactured by YAMASA with a tolerance accuracy of 1 micron and a surface finish quality of Ra 0.02 µm. This exceptional precision enables micron-level dimensional accuracy, surface finishes up to Ra 0.02 µm and functional surfaces with a high bearing ratio. DX tools deliver outstanding performance in applications requiring high precision.

Benefits of DX Roller Burnishing Tools

Superior Surface Finish

• Achieves surface roughness values as low as Ra 0.02 µm, improving sealing performance while reducing friction and wear in hydraulic and pneumatic applications.

Precise Dimensional Tolerances

• Provides micron-level dimensional accuracy and highly repeatable bore sizes. Ideal for mass production processes requiring consistent quality.

Surface Hardening Effect

• Creates a cold working effect on the surface, increasing hardness and improving wear resistance.

Extended Component Life

• Reduced friction and improved surface integrity contribute to longer service life of finished components.

High Bearing Ratio

• Produces functional surfaces with Tp ≥ 95% bearing ratio, improving load distribution, reducing wear and increasing operational performance.

Cost-Effective Production

• DX Roller Burnishing Tools complete the process in a single pass, reducing or eliminating the need for grinding, honing and polishing operations. This shortens production time and lowers manufacturing costs.