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Author : R. E. Riecker
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.3/5 (91 download)
Download or read book High Pressure Thrust Bearings written by R. E. Riecker and published by . This book was released on 1964 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. E. Riecker
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (18 download)
Download or read book High Pressure Thrust Bearings written by R. E. Riecker and published by . This book was released on 1964 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Successful operation of a 50 kb-1000C rock deformation shear press depends on frictionless operation of two thrust bearings; an upper bearing must transmit undiminished 30,000 inch-pounds of torque to a mineral test specimen, and the lower bearing must permit free rotation of a torque measuring arm under maximum torques of 7000 inch-pounds. Upper bearing friction coefficients as low as 0.01 result when colloidal bonded films containing 65 percent pure MoS2 in an alkyd resin are used with MoS2 greases. The torque arm bearing is lubricated with 0.01 inch thick Teflon sheet to obtain friction coefficients below 0.016. Bearing pressures occasionally exceed 100,000 psi in both bearings, however no evidence of galling, seizing or wear have developed on any thrust plate. Torque losses do not exceed 5 percent of the transmitted value in the upper bearing and 3.5 percent in the lower bearing. (Author).
Author : J. Frene
Publisher : Elsevier
ISBN 13 : 0080534317
Total Pages : 499 pages
Book Rating : 4.0/5 (85 download)
Download or read book Hydrodynamic Lubrication written by J. Frene and published by Elsevier. This book was released on 1997-11-10 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrodynamic Lubrication is the culmination of over 20 years close, collaborative work by the five authors and discusses the practical use of the formalization of low pressure lubrication. The work concentrates on the developments to journal and thrust bearings and includes subjects such as: • the dynamic behaviour of plain and tilting-pads • the thermal aspects • the positive and negative effects of non-cyclindricity and shape defects resulting from manufacturing or operation • the effects of inertia • the appearance of Taylor's vortices and of turbulence and their repercussions. The book contains an abundance of test results objectively compared with theoretical conclusions and a chapter on "technical considerations" to ensure that draft mechanisms will work satisfactorily under the imposed conditions. Hydrodynamic Lubrication is an essential reference book for future and practising engineers who want to put hydrodynamic and hydrostatic journal bearings and thrust bearings into operation under conditions of total safety.
Author : D. F. Denny
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (246 download)
Download or read book Power Loss Characteristics of Thrust Bearings for High-pressure Pumps with Special Reference to Hydrostatic Slipper Bearings written by D. F. Denny and published by . This book was released on 1959 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles Mallory North
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (131 download)
Download or read book A High Pressure Hydrostatic Gas Thrust Bearing written by Charles Mallory North and published by . This book was released on 1963 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David P. Fleming
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (31 download)
Download or read book Analysis and Computer Program for Evaluation of Rotating Incompressibly Lubricated Pressurized Thrust Bearings written by David P. Fleming and published by . This book was released on 1971 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edgar J. Gunter
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.3/5 (91 download)
Download or read book Design Guide for Gas-lubricated Tilting-pad Journal and Thrust Bearings with Special Reference to High-speed Rotor written by Edgar J. Gunter and published by . This book was released on 1964 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gilbert F. Boeker
Publisher :
ISBN 13 :
Total Pages : 310 pages
Book Rating : 4.M/5 ( download)
Download or read book Gas-lubricated Bearings written by Gilbert F. Boeker and published by . This book was released on 1958 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W B Rowe
Publisher : Elsevier
ISBN 13 : 1483144542
Total Pages : 255 pages
Book Rating : 4.4/5 (831 download)
Download or read book Hydrostatic and Hybrid Bearing Design written by W B Rowe and published by Elsevier. This book was released on 2013-09-24 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrostatic and Hybrid Bearing Design is a 15-chapter book that focuses on the bearing design and testing. This book first describes the application of hydrostatic bearings, as well as the device pressure, flow, force, power, and temperature. Subsequent chapters discuss the load and flow rate of thrust pads; circuit design, flow control, load, and stiffness; and the basis of the design procedures and selection of tolerances. The specific types of bearings, their design, dynamics, and experimental methods and testing are also shown. This book will be very valuable to students of engineering design and lubrication.
Author : M. A. Koenders
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.3/5 (91 download)
Download or read book Hydrodynamic and Hydrostatic Lubricated Bearings with Particular Reference to Air Bearings- written by M. A. Koenders and published by . This book was released on 1958 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (317 download)
Download or read book Lateral Dampers for Thrust Bearings written by and published by . This book was released on 1985 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. J. Neale
Publisher : Elsevier
ISBN 13 : 1483135497
Total Pages : 147 pages
Book Rating : 4.4/5 (831 download)
Download or read book Bearings written by M. J. Neale and published by Elsevier. This book was released on 2013-10-22 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bearings: A Tribology Handbook is a practical guide on bearings, based on materials published in the first edition of the Tribology Handbook. The handbook has been updated matching international requirements. The book is divided in four main parts. The first part is a description of different bearing types and forms pertaining to continuous and oscillatory movements. A selection of journal and thrust bearings as to their different load capacity, performance, and special environmental conditions is explained. The second part deals with the physical properties and load capacity of plain bearings. Other kinds of bearing, such as the dry rubbing bearings; porous metal bearings; grease, wick, and drip fed journal bearings; ring and disc fed journal bearings; steady load pressure fed journal bearings; high-speed bearings; and crankshaft bearings, are considered regarding their performance, maintenance, and suitability to specific conditions. The third part focuses on one type of bearing: the rolling bearing. The selection, composition, shaft and housing design, and fitting and mounting for this type is discussed. The last part explains special bearing types such as slide bearings, instrument jewels (which are a combination of a steel pivot and a synthetic sapphire jewel), and electromagnetic bearings that are essentially powerful electromagnets. The need for surface treatments and coatings is then explained for optimum usage. The handbook is useful for design engineers, mechanical engineers, and material researchers. Mechanical, aeronautical, and automotive students; car mechanics; and those interested in machine and car maintenance will find this handbook a handy reference.
Author : Paul R. Esser
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (747 download)
Download or read book Measurements Versus Predictions for a Hybrid (hydrostatic Plus Hydrodynamic Thrust Bearing for a Range of Orifice Diameters written by Paul R. Esser and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A fixed geometry hybrid thrust bearing is investigated with three different supply orifice diameters. The test rig uses a face-to-face thrust bearing design, with the test bearing acting as the rotor loading mechanism. A hydraulic shaker applies the static axial load, which is reacted by a second thrust bearing. The rotor is supported radially by two water-lubricated fluid film journal bearings and is attached to a 30,600 rpm motor via a high speed coupling with very low axial stiffness. Thrust bearings with three different orifice diameters (1.63, 1.80, and 1.93 mm) are tested for a range of supply pressures, fluid film thicknesses, and rotational speeds. The water-lubricated test bearings have eight pockets, with feed orifices located centrally in each pocket. Experimental results are comparted to predictions found using bulk flow model HYDROTHRUST. Analysis of the data reveals generally good agreements between predictions and measurements. Thrust-bearing inlet supply and inner radius flow rates all decreased with decreasing orifice diameters and bearing axial clearances. In most cases, the bearings with larger orifice diameters exhibit higher recess pressure ratios, operating clearances, and flow rates. The largest orifice diameter configuration does not display higher recess pressure ratios or operating clearances at high speeds for some supply pressures, but it does continue to require additional lubricant flow rate compared to the smaller orifice bearings. In these cases, the results are not reflected in predictions, which otherwise correlate very well with experimental measurements. Estimations of static loading axial stiffness are obtained using experimental results. An optimum hybrid thrust bearing orifice diameter will depend on the conditions of individual applications. Larger orifices generally provide larger operating clearances and higher stiffnesses, but also require higher flow rates. For most applications, a compromise of bearing performance parameters will be desired. The test results and comparisons presented will aid in sizing orifice diameters for future hybrid thrust bearing designs.
Author : Jianpeng Feng
Publisher :
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.:/5 (841 download)
Download or read book An Analytical and Numerical Study of Profiled Hydrostatic Thrust Bearings written by Jianpeng Feng and published by . This book was released on 2004 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the lubrication problem associated with profiled hydrostatic thrust bearings is studied using analytical, numerical, and experimental techniques. The coupled fluid-solid problem is solved using a sequentially coupled iterative method where the classical Reynolds equation is used to obtain the lubrication pressure and ABAQUS/STANDARD is used to obtain the bearing surface deformation. A novel feature of the work is that it considers several new designs obtained by varying the geometry of the socket, which in turn alters the contact between the piston ball and the slipper bearing. The performance of the new designs are analyzed and compared with the standard design performance. The surface profile of the bearings is measured experimentally and its effect on the bearing performance is studied numerically. The load carrying capacity results are compared with experimentally measured values. Further, for the standard design bearing, the effect of pocket width is also studied. A numerical technique based on variational formulation is developed to study the bearing problem with translation. The results show that the translation speed effect is more significant in shallow pocket thrust bearings and generates a bigger tilt moment than in deep pocket thrust bearings. At high translation speeds, the pressure profile shows a sharp spike (Rayleigh step effect) at the trailing land step interface. A finite difference scheme is developed to capture the spike. Comparisons with three-dimensional CFD simulations indicate that the method works well in predicting the pressure spike as well as the tilting moment.
Author : Avraham Harnoy
Publisher : CRC Press
ISBN 13 : 9780203909072
Total Pages : 664 pages
Book Rating : 4.9/5 (9 download)
Download or read book Bearing Design in Machinery written by Avraham Harnoy and published by CRC Press. This book was released on 2002-09-25 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the fundamental principles of bearing selection, design, and tribology, this book discusses basic physical principles of bearing selection, lubrication, design computations, advanced bearings materials, arrangement, housing, and seals, as well as recent developments in bearings for high-speed aircraft engines. The author explores unique solutions to challenging design problems and presents rare case studies, such as hydrodynamic and rolling-element bearings in series and adjustable hydrostatic pads for large bearings. He focuses on the design considerations and calculations specific to hydrodynamic journal bearings, hydrostatic bearings, and rolling element bearings.
Author : M. A. Laughton
Publisher : Newnes
ISBN 13 : 0080523544
Total Pages : 1519 pages
Book Rating : 4.0/5 (85 download)
Download or read book Electrical Engineer's Reference Book written by M. A. Laughton and published by Newnes. This book was released on 2002-09-27 with total page 1519 pages. Available in PDF, EPUB and Kindle. Book excerpt: For ease of use, this edition has been divided into the following subject sections: general principles; materials and processes; control, power electronics and drives; environment; power generation; transmission and distribution; power systems; sectors of electricity use.New chapters and major revisions include: industrial instrumentation; digital control systems; programmable controllers; electronic power conversion; environmental control; hazardous area technology; electromagnetic compatibility; alternative energy sources; alternating current generators; electromagnetic transients; power system planning; reactive power plant and FACTS controllers; electricity economics and trading; power quality. *An essential source of techniques, data and principles for all practising electrical engineers*Written by an international team of experts from engineering companies and universities*Includes a major new section on control systems, PLCs and microprocessors
Author : Frank Melvin Stansfield
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.:/5 (318 download)
Download or read book Hydrostatic Bearings for Machine Tools and Similar Applications written by Frank Melvin Stansfield and published by . This book was released on 1970 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
