The aim of this document is to achieve designs of plain bearings that are reliable in operation, by the application of a calculation method for oil-lubricated hydrodynamic plain bearings with complete separation of the thrust collar and plain bearing surfaces by a film of lubricant[1]. This document applies to plain thrust bearings with incorporated wedge and supporting surfaces having any ratio of wedge surface length lwed to length of one pad L. It deals with the value lwed/L = 0,75 as this va...view more

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    • Standard
      25 pages
      English language
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    • Draft
      25 pages
      English language

This document specifies guide values for avoiding damage to thrust-pad bearings in service. The explanation of the symbols as well as examples for calculation are given in ISO 12131-1.

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    • Standard
      5 pages
      English language
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    • Draft
      5 pages
      English language

This document specifies the general principles, assumptions and preconditions for the calculation of multi-lobed and tilting-pad journal bearings by means of an easy-to-use calculation procedure based on numerous simplifying assumptions. For a reliable evaluation of the results of this calculation method, it is indispensable to consider the physical implications of these assumptions as well as practical experiences for instance from temperature measurements carried out on real machinery under ty...view more

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    • Technical specification
      37 pages
      English language
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    • Technical specification
      37 pages
      English language

This document specifies the characteristic values for selected tilting-pad journal bearings with four or five centrally or eccentrically supported tilting pads and with angular spans of pad sliding surfaces of Ω = 80°, 60° and 45°. The functions plotted and listed in table form below are required for the operationally safe design of hydrodynamic tilting-pad journal bearings according to ISO/TS 31657-1. They are based on the presumptions and boundary conditions indicated there and only apply to s...view more

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    • Technical specification
      73 pages
      English language
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    • Technical specification
      73 pages
      English language

This document specifies the characteristic values for selected two-, three- and four-lobe bearings. The functions plotted and listed in table form below are required for the operationally safe design of hydrodynamic multi-lobed journal bearings according to ISO/TS 31657-1. They are based on the presumptions and boundary conditions indicated there and only apply to stationary operating states. The symbols used are explained in ISO/TS 31657-1; calculation examples are also included there.

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    • Technical specification
      67 pages
      English language
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    • Technical specification
      67 pages
      English language

This document specifies a calculation procedure for oil-lubricated hydrodynamic plain bearings, with complete separation of the shaft and bearing sliding surfaces by a film of lubricant, used for designing plain bearings that are reliable in operation. It deals with circular cylindrical bearings having angular spans, Ω, of 360°, 180°, 150°, 120°, and 90°, the arc segment being loaded centrally. Their clearance geometry is constant except for negligible deformations resulting from lubricant film ...view more

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    • Standard
      32 pages
      English language

This document establishes the permissible operational parameters in terms of guide values for the calculation of selected multi-lobed and tilting-pad journal bearings. In order to attain a sufficient operational safety of multi-lobed and tilting-pad journal bearings by the calculation according to ISO/TS 31657-1, it is necessary for the operational characteristic value hmin to be significantly above the permissible operating parameter hlim,tr and for the permissible operating parameters Tlim and...view more

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    • Technical specification
      6 pages
      English language
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    • Technical specification
      6 pages
      English language

This document specifies empirical permissible values for hlim, Tlim and . The empirical values stated can be modified for certain applications, for example if information supplied by the manufacturer is to be taken into account. The descriptions of the symbols and calculation examples are given in ISO 7902-1.

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    • Standard
      9 pages
      English language

This document specifies the values of the basic functions used in the calculation procedure for oil-lubricated circular cylindrical hydrodynamic bearings under conditions of full lubrication. The values are given for the assumptions and boundary conditions given in ISO 7902-1. The values necessary for the calculation can be determined from the tables of bearing characteristics, the graphs and from the formulae. The descriptions of the symbols used and calculation examples are given in ISO 7902-1...view more

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    • Standard
      68 pages
      English language

This document specifies the derivation of mathematical functions to be applied when calculating tilting pad thrust bearings. This document is not applicable to heavily loaded tilting pad thrust bearings.

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    • Standard
      12 pages
      English language

This document specifies guide values for the calculation of tilting pad thrust bearings as described in ISO 12130-1. The empirical values given can be modified for specific fields of application. This document is not applicable to heavily loaded tilting pad thrust bearings.

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    • Standard
      5 pages
      English language

This document specifies a calculation method of oil-lubricated plain journal bearings without drainage grooves under steady-state conditions. It applies to hydrostatic plain journal bearings under steady-state conditions. In this document, only bearings without oil drainage grooves between the recesses are taken into account.

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    • Standard
      31 pages
      English language

This document lists, in graphic form, characteristic values used in the calculation of oil-lubricated plain bearings without drainage grooves.

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    • Standard
      13 pages
      English language

ISO 12167-1:2016 applies to hydrostatic plain journal bearings under steady-state conditions. In ISO 12167-1:2016, only bearings with oil drainage grooves between the recesses are taken into account. As compared to bearings without oil drainage grooves, this type needs higher power with the same stiffness behaviour.

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    • Standard
      32 pages
      English language

ISO 12131-2:2016 specifies functions for thrust pad bearings. It also covers the effect of dynamic viscosity on lubricant film temperature.

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    • Standard
      10 pages
      English language
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    • Draft
      24 pages
      English language
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    • Draft
      24 pages
      English language

This part of ISO 12167 lists, in graphic form, characteristic values used in the calculation of oil-lubricated plain journal bearings with drainage grooves.

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    • Standard
      9 pages
      English language
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    • Standard
      9 pages
      French language
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    • Standard
      9 pages
      English language
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The aim of ISO 12130 is to achieve designs of plain bearings that are reliable in operation by the application of a calculation method for oil-lubricated hydrodynamic plain bearings with complete separation of the thrust collar and plain bearing surfaces by a film of lubricant. This part of ISO 12130 applies to plain thrust bearings with tilting-type sliding blocks (tilting pads), where a wedgeshaped lubrication clearance gap is automatically formed during operation. The ratio of width to length...view more

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    • Standard
      24 pages
      French language
    • sale 15% off
    • Standard
      24 pages
      English language
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    • Standard
      24 pages
      English language
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