Lubrication and Reliability Handbook 2010 Part 13 pps

... temperatures and stresses often associated particularly with the cutting and abrasive processes. Optimised surface specification thus becomes a highly complex matter that often calls for experiment and research, ... ␮m R a (2.5). A standard cut-off value often found suitable for the finer surfaces is 0.8 mm, and if this value was used or is to be used, the standards allow it to be ass...

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... viscosity and other characteristics of the fluid have been omitted from this table, these play a very large and often complicated part in grease perform- ance. Certain bearing manufacturers demand ... and the type of thickener used in their manufacture. The section of this handbook on greases summarises the properties of the various types. Additive oils are not required for plain be...

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... corresponding to various components and problems B5 Wear debris analysis B5.6 Severe sliding wear Severe sliding wear particles range in size from 20 ␮m and larger. Some of these particles have surface striations as ... displacement and frequency and is thus likely to relate to fatigue stresses. The normal procedure is to measure the vertical, horizontal and axial vibration of a bea...

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... motion, often with embedded particles and haloes. Causes Dirt particles in lubricant exceeding the minimum oil film thickness. Foreign matter Characteristics Severe scoring and erosion of bearing ... Wear and corrosion of production machinery, blocked pipe-lines, valve and pump failure. 8 Staff problems due to smell and possibly health. ANTI-MICROBIAL MEASURES These may involve: 1 C...

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... in machine operation and maintenance of all kinds of machinery and plant. This Page Intentionally Left Blank

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... grease and oil lubrication Table 8.2 The effect of the method of application on the choice of a suitable grade of grease A13 Lubricant selection A13.4 Table 13. 4 Some factors affecting lubrication ... local conditions and environment) A8 Rolling bearing lubrication A8.3 Calculation of relubrication interval The relubrication period for ball and roller bearings may be estimated u...

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... reservoir for re-use. There are two groups of systems: group 1, lubrication with negligible heat removal; and group 2, lubrication and cooling. GROUP 1 SYSTEMS Virtually any form of mechanically ... (measured in Lubrication Units) can be totalled for each section of the pipework, and this determines the size of pipe required for that section. The actual relationship is given in Ta...

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... Selection of heaters and coolers A23.1 Lubricating oil heaters and coolers are available in many different forms. The most common type uses steam or water for heating or cooling the oil, and consists ... Selection of filters and centrifuges A22.1 Figure 22.1 Typical circuit showing positions of various filters Table 22.1 Location and purpose of filter in circuit Table 22.2 Range of...

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... the design pressure and temperature. Figure 25.1 A basic lubrication system complete with warning and protection devices Table 25.1 The function of each major system component and the device required ... may be excessive Table 28.6 Particle sizes of common materials as a guide to the specification of seals and air filters A27Running-in procedures A27.3 In research and development...

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... preserve plant and machinery in a condition in which it can operate, and can do so safely and economically. It is the components of plant and machinery which fail individually, and can lead to ... bushes and thrust bearings, filled PTFE/metal and filled graphite/metal combinations are often used – see Table 30.8. Safety Aspects of safety are summarised in Table 30.7. Ball bearin...

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