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    1. Naturvetenskap och teknik
    2. Teknik och industri
    3. Maskinteknik och material

    Grease Lubrication in Rolling Bearings

    AvPiet M. Lugt

    Inbunden, Engelska, 2013

    Del i serien Tribology in Practice Series

    1 608 kr

    Beställningsvara. Skickas inom 5-8 vardagar. Fri frakt över 249 kr.

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    E-bok

    1 846 kr

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    Beskrivning

    The definitive book on the science of grease lubrication for roller and needle bearings in industrial and vehicle engineering.Grease Lubrication in Rolling Bearings provides an overview of the existing knowledge on the various aspects of grease lubrication (including lubrication systems) and the state of the art models that exist today. The book reviews the physical and chemical aspects of grease lubrication, primarily directed towards lubrication of rolling bearings.The first part of the book covers grease composition, properties and rheology, including thermal and dynamics properties. Later chapters cover the dynamics of greased bearings, including grease life, bearing life, reliability and testing. The final chapter covers lubrications systems – the systems that deliver grease to the components requiring lubrication.Grease Lubrication in Rolling Bearings: Describes the underlying physical and chemical properties of grease.Discusses the effect of load, speed, temperature, bearing geometry, bearing materials and grease type on bearing wear.Covers both bearing and grease performance, including thermo-mechanical ageing and testing methodologies.It is intended for researchers and engineers in the petro-chemical and bearing industry, industries related to this (e.g. wind turbine industry, automotive industry) and for application engineers. It will also be of interest for teaching in post-graduate courses.

    Produktinformation

    • Utgivningsdatum:2013-01-18
    • Mått:178 x 252 x 27 mm
    • Vikt:848 g
    • Format:Inbunden
    • Språk:Engelska
    • Serie:Tribology in Practice Series
    • Antal sidor:472
    • Förlag:John Wiley & Sons Inc
    • ISBN:9781118353912

    Utforska kategorier

    • Maskinteknik och material inom Naturvetenskap och teknik

    Mer om författaren

    Piet M. LugtSKF, The Netherlands

    Innehållsförteckning

    • Preface xviiList of Abbreviations xix1 Introduction 11.1 Why Lubricate Rolling Bearings? 11.2 History of Grease Lubrication 21.3 Grease Versus Oil Lubrication 32 Lubrication Mechanisms 52.1 Introduction 52.2 Definition of Grease 62.3 Operating Conditions 62.4 The Phases in Grease Lubrication 72.5 Film Thickness During the Bleeding Phase 82.6 Feed and Loss Mechanisms During the Bleeding Phase 102.7 Film Thickness and Starvation (Side Flow) 112.8 Track Replenishment 122.9 Grease Flow 132.10 Wall-Slip 152.11 Oxidation 162.12 EP Additives 162.13 Dynamic Behaviour 172.14 Grease Life 173 Grease Composition and Properties 233.1 Base Oil 243.2 Base Oil Viscosity and Density 413.3 Thickener 493.4 Additives 613.5 Solid Fillers/Dry Lubricants 663.6 Compatibility 673.7 Polymer Grease 674 Grease Life in Rolling Bearings 714.1 Introduction 714.2 Relubrication Intervals and Grease Life 714.3 The Traffic Light Concept 724.4 Grease Life as a Function of Temperature in the Green Zone 754.5 SKF Relubrication and Grease Life 764.6 Comparison Grease Life/Relubrication Models 784.7 Very Low and High Speeds 824.8 Large Rolling Bearings 854.9 Effect of Load 864.10 Effect of Outer-Ring Rotation 904.11 Cage Material 904.12 Bearing Type 914.13 Temperature and Bearing Material 924.14 Grease Fill 944.15 Vertical Shaft 954.16 Vibrations and Shock Loads 964.17 Grease Shelf Life/Storage Life 975 Lubricating Grease Rheology 995.1 Visco-Elastic Behaviour 995.2 Viscometers 1025.3 Oscillatory Shear 1085.4 Shear Thinning and Yield 1125.5 Yield Stress 1185.6 Wall-Slip Effects 1225.7 Translation Between Oscillatory Shear and Linear Shear Measurements 1255.8 Normal stresses 1265.9 Time Dependent Viscosity and Thixotropy 1285.10 Tackiness 1336 Grease and Base Oil Flow 1376.1 Grease Flow in Pipes 1376.2 Grease Flow in Rolling Bearings 1497 Grease Bleeding 1577.1 Introduction 1577.2 Ball Versus Roller Bearings 1587.3 Grease Bleeding Measurement Techniques 1587.4 Bleeding from the Covers and Under the Cage 1597.5 A Grease Bleeding Model for Pressurized Grease by Centrifugal Forces 1618 Grease Aging 1718.1 Mechanical Aging 1728.2 Grease Oxidation 1798.3 The Chemistry of Base Oil Film Oxidation 1818.4 Oxidation of the Thickener 1838.5 A Simple Model for Base Oil Degradation 1848.6 Polymerization 1868.7 Evaporation 1868.8 Simple Models for the Life of Base Oil 1869 Film Thickness Theory for Single Contacts 1919.1 Elasto-Hydrodynamic Lubrication 1929.2 Contact Geometry and Deformation 1989.3 EHL Film Thickness, Oil 2029.4 EHD Film Thickness, Grease 2059.5 Starvation 2129.6 Spin 22510 Film Thickness in Grease Lubricated Rolling Bearings 22710.1 Thin Layer Flow on Bearing Surfaces 22810.2 Starved EHL for Rolling Bearings 23410.3 Cage Clearance and Film Thickness 23910.4 Full Bearing Film Thickness 24111 Grease dynamics 24511.1 Introduction 24511.2 Grease Reservoir Formation 24511.3 Temperature Behaviour 24611.4 Temperature and Film Breakdown 24911.5 Chaotic Behaviour 24911.6 Quantitative Analysis of Grease Tests 25311.7 Discussion 25412 Reliability 25712.1 Failure Distribution 25812.2 Mean Life and Time Between Failures 26112.3 Percentile Life 26412.4 Point and Interval Estimates 26512.5 Sudden Death Testing 27512.6 System Life Prediction 28113 Grease Lubrication and Bearing Life 28313.1 Bearing Failure Modes 28313.2 Rated Fatigue Life of Grease Lubricated Rolling Bearings 28513.3 Background of the Fatigue Life Ratings of Grease Lubricated Bearings 28913.4 Lubricant Chemistry and Bearing Life 29613.5 Water in Grease 30413.6 Surface Finish Aspects Related to Grease Lubrication 30614 Grease Lubrication Mechanisms in Bearing Seals 30914.1 Introduction 30914.2 Lubrication Mechanisms for Radial Lip Seals 30914.3 Sealing Action of Grease 31214.4 Softening and Leakage 31914.5 Compatibility 32014.6 A Film Thickness Model for Bearing Seals 32014.7 Importance of Sealing Grease Inside the Bearing 32415 Condition Monitoring and Maintenance 32715.1 Condition Monitoring 32715.2 Acoustic Emission 32815.3 Lubcheck 33015.4 Consistency Measurement 33115.5 Oil Bleeding Properties 33215.6 Oil Content 33215.7 Particle Contamination 33215.8 Spectroscopy 33315.9 Linear Voltammetry 33415.10 Total Acid Number 33515.11 DCS – Differential Scanning Calorimetry 33515.12 Oxidation Bomb 33615.13 Water 33616 Grease Qualification Testing 33916.1 Introduction 33916.2 Standard Test Methods 33916.3 Some Qualification Criteria for Grease Selection 37416.4 Pumpability 37517 Lubrication Systems 37717.1 Single Point Lubrication Methods 37917.2 Centralized Grease Lubrication Systems 38017.3 Pumps 38217.4 Valves 38417.5 Distributors 38617.6 Single-Line Centralized Lubrication Systems 38617.7 Dual-Line Lubrication Systems 39317.8 Progressive Lubrication Systems 39417.9 Multi-Line Lubrication System 39717.10 Cyclic Grease Flow 39717.11 Requirements of the Grease 39817.12 Grease Pumpability Tests 402A Characteristics of Paraffinic Hydrocarbons 413References 415Index