Design of thrust washer arrangements
Thrust washers are advantageous even if axial loads are light and a surface is not adequate to accommodate the thrust, either because the material or its finish is unsuitable. For shafts that need radial support and axial location, a combination of a bushing (Design of bushing arrangements) and a thrust washer can be used (fig. 1) depending on the magnitude of the axial load. A thrust washer is generally located in a housing recess (fig. 1) and secured by a dowel pin or grub screw to prevent it from rotating. The heads of the pins or screws must be recessed to at least 0,3 mm below the sliding surface and the entire surface of the thrust washer should be supported. Also the counter surface should completely cover the sliding surface of the composite thrust washer. If for some reason, a recess cannot be provided in the housing, the thrust washer can be attached to the housing by two pins or screws (fig. 2) or by gluing. The appropriate dimensions for this type of location are provided in the product table.