BS ISO 3601-2:2016 pdf free

BS ISO 3601-2:2016 pdf free.Fluid power systems一O-rings一Housing dimensions for general applications
This part of ISO 3601 specifies the housing (gland) dimensions for class A O-rings for general industrial applications conforming to ISO 3601-1, as well as housing dimensions for class B O-rings used on selected metric-dimensioned hardware, e.g. fluid power cylinder bores and piston rods. These O-rings are for use in general hydraulic and pneumatic applications without and with anti-extrusion rings (back- up rings). The dimensions of the 0-rings [d1 and d2), size codes (SC) and tolerances conform to ISO 3601-1.
Housing dimensions for the O-rings intended for aerospace applications that are specified in ISO 3601-1 are addressed in Annex A.
NOTE 1 It is expected that O-ring housing dimensions for special applications be agreed upon between the O-ring manufacturer and the user.
NOTE 2 The terms “housing”, “groove” and “gland” are interchangeable, and their usage is a matter of local convenience. In this part of ISO 3601, the term “housing” is used exclusively.
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments applies.
ISO 3601-1:2012, Fluid power systems一O-rings 一Part 1: Inside diameters, cross-sections, tolerances and designation codes
ISO 3601-4, Fluid power systems一O-rings一Part 4: Anti-extrusion rings (back-up rings)
ISO 5598, Fluid power systems and components一Vocabulary
ISO 8015, Geometrical product specifications (GPS)一Fundamentals 一Concepts, principles and rules
The surface roughness of the 0-ring housing and any mating part has a significant impact on the life and sealing performance of the O-ring.
Unless otherwise agreed, surface roughness values shall be in accordance with Table 1. Surface roughness values of the housings for the O-rings intended for aerospace applications that are specified in ISO 3601-1 are addressed in Annex A.
Unless otherwise agreed, the material ratio, Rmr, should be 50 % to 80 % for surfaces of mating parts, determined at a cut depth of C = 0,25 Rz, relative to a reference profile line of Co = 0,05 Rmr (see ISO 4287:1997, 4.5.2).
Figure 6 shows a cross-section of a typical piston housing, ilustrating the housing width, bx,housing height, h, the total distance between the sealing surface and the housing height, t, the gap between the sealing elements, g, the edges of undefined shape, f, and the surfaces for which surface roughness requirements are specified. All of these features have different values depending on the application.BS ISO 3601-2 pdf free download.