Inside Diameter (ID) Grinding

Inside Diameter (ID) Grinding (or Internal Grinding) is generally done to create a precision surface finish with great accuracy on the inside diameters. With this method the work piece is mounted in a chuck to allow rotation during the grinding operation.

Inside diameter (ID) grinding delivers perfect, functional surfaces in components needed to establish a non-positive connection with an axle or shaft. Similarly to outside diameter (OD) grinding, this method is split into two different techniques according to the direction of grinding: Peripheral-transverse internal diameter (ID) grinding (plunge grinding) and Peripheral-longitudinal internal diameter (ID) grinding.

In terms of the behavior of the grinding wheel and the workpiece, both techniques display virtually identical properties to outside diameter (OD) grinding between centers. ID grinding is used to refine bores with a high-precision fit. Used for the machining of hard and super-hard materials, inside diameter grinding can be used both to machine different diameters in a single operation as well as to produce tapered fits. The flexibility of inside diameter grinding really comes into play if the grinding wheel needs to be narrower than the surface which is to be machined, and a combination of longitudinal and plunge grinding is required. In almost all cases the grinding wheel diameter does not exceed 2/3 or a maximum of 4/5 of the bore diameter.

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