Centreless Grinding Wheels

Centreless grinding is an advanced machining method used for the production of cylindrical components with tight dimensional tolerances and precise surface finishes.

Unlike conventional grinding, which requires the positioning of the workpiece between a grinding wheel and a centre, centreless grinding does not require the use of rotation centres, allowing workpieces of different shapes and sizes to be machined with greater flexibility and precision.

Our solutions for centreless grinding

In large steel productions, constant tooling, which allows very high yields to be maintained, is the basis of the partnerships TIAC has been able to forge with the world’s major steel groups.
The performance of grinding wheels in centreless grinding plays a key role in production yields. Continuous research and development of specific abrasive blends for different types of machining has made TIAC’s Custom-Made approach a winning weapon in this type of processing.

Centreless grinding with TIAC grinding wheel and guide roller

  • CodeUseFinish
    TR 60 L 5VNon-alloy steelsRa 0,6
    TBG 70 K 5VAlloy and non-alloy steels Ra 0,4
    AST 70 K 5VAlloy steelsRa 0,4
  • CodeUseFinish
    AST 70 L 5BAlloy steelsRa 0,2
    C 60 LM 5BTAISI alloy steelsRa 0,6
    AMG-ZBAlloy and bearing steelsRa 0,15

Centreless grinding with TIAC double grinding wheel Suitable for grinding bars

  • CodeUseFinish
    AMG 46 O 7BAISI Alloy steelsRa 0,8
    AMG-04-14B PORAISI Alloy steelsRa 0,4
    AC 90 M 5BAISI Alloy steelsRa 0,3
    AC 90 M 5B PORAISI Alloy steelsRa 0,3
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DIMENSIONAL RANGE

Minimum Diameter: 300 mm
Maximum Diameter: 660 mm
Minimum Thickness: 100mm
Maximum Thickness: 820mm

Benefits of centreless grinding

  • HIGH PRECISION

    Centreless grinding allows extremely tight dimensional tolerances and precise surface finishes, guaranteeing the highest degree of precision in the details;

  • FLEXIBILITY

    This machining method is suitable for a wide range of part shapes and sizes, offering greater flexibility and versatility than traditional grinding.;

  • EFFICIENCY

    Centreless grinding is an efficient, highly automated process, reducing machining times and optimising overall production costs.

Insight: the machining process for centreless grinding

During the centreless grinding process, the workpiece is supported by adjustable guides, an adjusting blade and a support blade. A rotating grinding wheel rotates around the workpiece, removing excess material and producing an accurate, uniform cylindrical surface. This machining method is particularly suitable for the mass production of high-precision components such as shafts, pivots, cylinders and more.
Where possible, centreless grinding allows for through-feed machining by means of two grinding wheels or a grinding wheel and a guide roller, making it possible for large quantities of material to be processed with the aid of automation and loading and unloading movements.
In addition to through-feed machining, plunge grinding operations are also possible, whereby mechanical parts are machined with predefined shapes.