Lubrication and Reliability Handbook 2010 Part 5 pptx

... 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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... FIMechE LUBRICATION AND RELIABILITY HANDBOOK A2 Mineral oils A2.3 index of 95 (dynamic viscosity index 93). Figure 2.2 shows the difference between 150 Grade ISO 3448 oils with KVIs of 0 and 95. Viscosity-pressure The ... in machine operation and maintenance of all kinds of machinery and plant. This Page Intentionally Left Blank

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... binders on rubbers, cellulose on wood and plastics. 4 Substrate pretreatment essential. 5 Fluids usually deleterious to life. A5 Solid lubricants and coatings A5.2 C BURNISHED FILMS Effects of operational ... to surfaces and cured to form a ‘bonded coating’, 5 25 ␮m thick. See subsection D. Dispersion in non-volatile fluids – Directly as a lubricating medium, or as an additive to oi...

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... balls is about 1 .5. Thus 3100  1 .5 = 4 650 rev/min. Factor for vertical mounting is 0. 75. Thus 4 650  0. 75 = 3488 rev/min. This is the maximum speed rating (100%). Now actual speed = 950 rev/min; ... 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...

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... A15Total loss grease systems A 15. 5 CONSIDERATIONS IN STORING, PUMPING AND TRANSMITTING GREASE AND GENERAL DESIGN OF SYSTEMS A15Total loss grease systems A 15. 3 PIPE-FLOW CALCULATIONS To ... 12 .5 m/s ( 250 0 ft/min) peripheral speed. Typical single reduction bevel gear unit Suitable for up to 12 .5 m/s ( 250 0 ft/min). Typical high-speed gear unit guard Normally satisfactory up to 25...

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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 ... cylinder liner ؋ 140 A 25 Selection of warning and protection devices A 25. 1 Satisfactory operation of a centralised recirculatory lubrication system requires adequate control...

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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 ... activity Table 2 .5 Problems which can arise A31Chemical effects A31.3 A29 High pressure and vacuum A29.4 Loss of surface films in high vacuum Surface contaminant films of soaps, oils...

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... surface. Particles may range in size from 2 5 ␮m wide and 25 to 100 ␮m long. B5Wear debris analysis B5.1 In wear debris analysis machine lubricants are monitored for the presence of particles ... 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 ha...

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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 ... change and con- sequential down-time in associated operations. 3 Direct labour and power costs of change. 4 Disposal costs of spoiled oil or emulsion. 5 Deterioration of product perform...

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... crown and ring land damage Characteristics The crown may show cracking and the crown land and lands between the rings may show major distortion, often with the ring ends digging in to the lands. Causes Major ... helical gears Heat/load cracking on a worm wheel B15Seal failures B 15. 5 PACKED GLANDS Table 15. 6 Common failure mechanisms of packed glands Figure 15. 10 Soft packing rings a...

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