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Roller burnished surfaces are characterized by
These properties are ideally suited for sliding surfaces meal to metal or to non metallic material, to mate reciprocating or rotary seals and for fits (shrink or press fits). Hard roller burnished surfaces are suitable also for ball and roller bearings. Examples:  The bore of a clamping cylinder mate with a high pressure seal. It is finished to very smooth surface quality of Rz <1 µm within few sec. The roller burnish surface provides best seal and lowest amount of wear.  Rollers for metal sheet mills become harder and more wear resistant by hard roller burnishing.  Load capacity and life of induction hardened bearings are improved. In this particular case, these are bearings for the swivel joints of earth movers. 
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 Spacers for truck rear axles mate under rotation with the external seal of the whole axle. They are turned from quenched and tempered rings. Seal surface and chamfer are roller burnished in one setting using the single roller tool EG45. The manufacturing costs have been reduced by 50 % compared to the earlier process sequence.  The bore of a clamping cylinder mate with a high pressure seal. It is finished to very smooth surface quality of Rz <1 µm within few sec. The roller burnish surface provides best seal and lowest amount of wear.  Crank shafts of large piston pumps for the oil field industry are roller burnished after turning, even so bearing pins of crank shafts in air compresses or engines for motor bikes or fun vehicles. ECOROLL tools EG5 or EG14 are used, depending on dimensions of the components. |
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