BS ISO 3548-2:2020 pdf free

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BS ISO 3548-2:2020 pdf free.Plain bearings—Thin-walled half bearings with or without flange.Measurement of wall thickness and flange thickness.
BS ISO 3548-2 1 Scope This document specifies in accordance with ISO 12301 the checking of the wall-thickness of thin- walled half bearings with or without flange and describes the necessary checking methods and measuring equipment.  It applies to a maximum bearing diameter of 150 mm. It can be applied to a bigger diameter, provided that there is an agreement between the supplier and the user. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3548-1, Plain bearings一Thin walled half bearings with or without flange一Part 1: Tolerances, design features and methods of test.The gauging axis of the measuring device shall be in the radial direction and perpendicular to the outside surface of the test piece in order to find the minimum value of the wall thickness. The measured values may be recorded by a single measurement or by sum measurement, which are symbolically represented in Figure 2.The presence of lubricating holes, oil pockets, oil grooves, markings or special chamfers may require deviation from the measuring lines and measuring points specified in the following and shall be agreed between the customer and the supplier. Any wall thickness not conforming to the specified values due to the manufacturing process, because of deformation of the bearing backing in the area of marking or at non-load bearing places, shall be agreed between the customer and the supplier.Measurement of the wall thickness in axial direction shall be carried out by using the definition of measuring lines specified in Figure 4 a) (Method A) or by using the definition of measuring lines specified in Figure 4 b) and Table 3 (Method B]. For Method B, the distance to the measuring position H shall not result into measurement within the crush relief area. BS ISO 3548-2 pdf download.

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