ISO 5597:2018 pdf free
ISO 5597:2018 pdf free.Hydraulic fluid power一Cylinders一Dimensions and tolerances of housings for single- acting piston and rod seals in reciprocating applications
The extrusion gap is determined by the diameter (d4 or d3) of the adjacent metal components behind the seal. It is recommended that details concerning d3 (see Figures 1 and 2) and d4 (see Figures 3 and 4) be subject to consultations between the housing designer and seal manufacturer.
NOTE 1 Maximum value for the extrusion gap is achieved when the piston or piston rod is in contact with one side of the cylinder or bearing, respectively.
NOTE 2 The extrusion gap for piston seals is further widened by the expansion of the cylinder due to internal pressure.
The surface roughness of the seal housing and any mating part has a significant impact on the life and sealing performance of the seal.
Where surface roughness measurements are taken, it is recommended that instruments complying with ISO 3274, including an electric wave filter, be used.
The surface roughness of the seal housing and any mating part has a significant impact on the life and sealing performance of the seal.
Where surface roughness measurements are taken, it is recommended that instruments complying with ISO 3274, including an electric wave filter, be used.
Unless otherwise agreed the roughness values shall be in accordance with Table 1.
Unless otherwise agreed, the material ratio Rmr of housing surfaces that are in mating contact with the seal should be between 50 % and 80 % at a profile section level (R8c) of 25 % of Rz, from a reference level, CO, of 5 % Rmr (in accordance with ISO 4287:1997, 4.5.4).
For some seal designs, a minimum surface roughness of 0,1 um Ra may be required for the sliding sealing surface as the surface otherwise may be too smooth to provide adequate lubrication for the seal.
Exceptional service conditions may necessitate the selection of other grades of surface roughness,in which case they should be subject to agreement between manufacturer and user.ISO 5597 pdf free download.
