File Steam engine lubrication.jpg thumb Lubrication of the ship steam engine crankshaft . The two bottles with lubricant are attached to the piston and move while the engine is operating. Lubrication is the process ... film can be a solid, e.g. graphite , MoS sub 2 sub ref www.engineersedge.com lubrication applications ... fluid between the surfaces. Lubrication can also describe the phenomenon such reduction of wear occurs ... , lubrication and wear is called tribology . Adequate lubrication allows smooth continuous operation ... bearing s. When lubrication breaks down, metal or other components can rub destructively over each other, causing destructive damage, heat, and failure. The regimes of lubrication As the load increases on the contacting surfaces three distinct situations can be observed with respect to the mode of lubrication, which are called regimes of lubrication Fluid film lubrication is the lubrication regime ... lubrication . MEEN626 Lubrication Theory Class Syllabus FALL2006 . http phn.tamu.edu me262 Notes pdf Introduction.pdf 11 Dec 2007 ref Hydrostatic lubrication is when an external pressure is applied ... it would otherwise be squeezed out. Hydrodynamic lubrication is where the motion of the contacting ... film breaks down. Elastohydrodynamic lubrication The opposing surfaces are separated, but there occurs ... of the lubricant becomes capable of supporting the load. Boundary lubrication also called boundary film lubrication The bodies come into closer contact at their asperities the heat developed by the local .... Boundary lubrication is also defined as that regime in which the load is carried by the surface asperities ... Mild Wear in the Boundary Lubrication regime edition publisher Laboratory for Surface Technology ... movement hydrodynamics or by externally induced forces. Lubrication is required for correct ... tool s etc. where without lubrication the pressure between the surfaces in close proximity ... combustion gases from escaping into the crankcase. See also References http www.lubescience.com Lubrication ... more details
wiktionary lubricationLubrication may refer to In physics Lubrication Acoustic lubrication Hydrodynamic lubricationLubrication theory Boundary lubrication In biology Vaginal lubrication See also Lubricant Personal lubricant disambiguation ... more details
Mergeto lubrication date April 2010 Brief description of lubrication Main LubricationLubrication is the process of reducing wear of surfaces which are in moving contact with each other, by interposing a lubricant between the surfaces to more evenly spread the load pressure generated between the surfaces. Adequate lubrication is obtained when the relative motion of the parts is smooth and continuous, with only mild wear. If wear is excessive, or if the parts seize up or break, the lubrication has been inadequate or has broken down. Lubrication regimes When progressively increasing the load between the contacting surfaces three distinct situations can be observed with respect to the mode of lubrication, which are called regimes of lubrication Fluid film lubrication In this regime the lubricant fluid carries the externally applied load entirely either with the help of an external pressure, which is called Hydrostatic Lubrication , or totally by the hydrodynamic forces acting in the conjunction due to the relative movement of the surfaces and the viscous resistance of the fluid, which is called Hydrodynamic lubrication . ref San Andr s. L. Introduction to pump rotordynamics, Part i. Introduction to hydrodynamic lubrication . MEEN626 Lubrication Theory Class Syllabus FALL2006 . http phn.tamu.edu me262 Notes pdf Introduction.pdf 11 Dec 2007 ref Elastohydrodynamic lubrication In this regime the opposing surfaces are separated by the film of lubricant, but some interaction occurs between the raised solid features called asperities , and there is an elastic deformation on the contacting surface enlarging the loadbearing area whereby the viscous resistance of the lubricant becomes capable of supporting the load. Boundary lubrication also called boundary film lubrication The bodies ... of lubrication in which the load is carried by the surface asperities rather than by the lubricant ... Lubrication regime edition publisher Laboratory for Surface Technology and Tribology, Faculty of Engineering ... more details
unreferenced date August 2010 Automatic lubrication also called autolub or auto lub refers to a lubrication system where 2 stroke oil is automatically mixed with fuel and manual pre mixing of fuel and 2 stroke oil is not needed. Occasional filling up of the 2 stroke oil reservoir is needed. This system is popular with the users of 2 stroke engine , specially motorcycles as it eliminates the inconvenience and messiness of pre mixing fuel and 2 stroke oil. Vespa Sprint is an example where pre mixing of 2 stroke oil is required. An example of application of automatic lubrication system is Suzuki AX100 motorcycle. The motorcycle has a separate oil reservoir on its right side which supplies the cylinder with 2 stroke oil proportional to acceleration. Advantages of autolube 1. Consistent lubrication and oil consumption is reduced greatly 2. More effective lubrication results because the oil enters the engine in larger size droplets 3. There is much less unwanted carbon deposited on the spark plugs, cylinder heads, pistons and exhaust system. 4. There is much less exhaust smoke 5. Refueling is simplified Category Motorcycle technology nl Autolube ... more details
Image Labium.JPG right thumb Vulva with lubrication Vaginal lubrication is a lubrication lubricating fluid that is naturally produced in a woman s vagina . Vaginal lubrication or moistness is present at all times, but production increases significantly during a woman s sexual arousal in anticipation of sexual intercourse . Without vaginal lubrication, sexual intercourse would be painful to the woman, and sometimes artificial lubricants must be used to augment insufficient natural lubrication. The vagina has no glands, and therefore must rely on other methods of lubrication. While plasma seepage from vaginal walls due to vascular engorgement is considered to be the chief lubrication source, the Bartholin ... in which this lubrication is insufficient. Composition File Female Genital Organs frontal view detailed ..., and diet. Image Female sexual arousal.JPG right thumb Not aroused and aroused vulva with lubrication ... title SEMEN ANALYSIS accessdate 2007 10 18 ref Vaginal dryness Insufficient lubrication or vaginal ... such as diabetes , will inhibit lubrication. Medicines with anticholinergic or sympathomimetic ... pill Oral contraceptives may also increase or decrease vaginal lubrication. Older women produce less vaginal lubrication and reduced estrogen levels may be associated with increased vaginal dryness ... she produces insufficient vaginal lubrication, sexual intercourse may be uncomfortable or painful for her ... produced lubrication and prevent or reduce the discomfort or pain. More rarely, a vaginal suppository ... practice dry sex . This involves the woman having sexual intercourse after removing vaginal lubrication ... is increased by lacerations in the vaginal tissue resulting from the lack of lubrication. ref ... to the use of tampons which excessively dry up the vaginal lubrication Spinnbarkeit , the stretchiness ... Reflist External links commons category Vaginal lubrication http www.mayoclinic.com health vaginal dryness DS00550 Mayo Clinic Vaginal dryness sex DEFAULTSORT Vaginal Lubrication Category Sexual arousal ... more details
Acoustic or sonic lubrication occurs when sound measurable in a vacuum by placing a microphone on one element of the sliding system permits vibration to introduce separation between the sliding faces. This could happen between two plates or between a series of particles. The frequency of sound required to induce optimal vibration, and thus cause sonic lubrication, varies with the size of the particles high frequencies will have the desired, or undesired, effect on sand and lower frequencies will have this effect on boulders . Examples If there is a dynamic coefficient of friction between two objects of 0.20, and vibration causes them to be in contact only half of the time, that would be equivalent to a constant coefficient of friction of 0.10. Citation needed reason Surely acoustic lubrication simply superimposes sinusoidally varying force onto the reaction force, this statement seems to oversimplify the problem... date July 2009 This substantial reduction in friction can have a profound effect on the system. World War II Panzer tank treads lubricated by their own squeak provide the most famous, if serendipity serendipitous , example. ref http motionengineer.blogspot.com 2008 05 lubricated by their own squeak.html ref Another example occurs during landslides. Most landslides do not involve this effect, but occasionally the frequency of vibrations caused by the landslide is optimal to cause the boulders to vibrate. In this case, feedback causes the boulders to slide much farther and more quickly than typical, which can pose an increased danger to those in their path. One notable feature of such a landslide is that it appears to resemble flowing water, or mud, and not the dry ... for acoustic lubrication, particularly where variable friction is required or traditional ... in the videogame Shadow Complex can acquire a friction dampener that uses acoustic lubrication ... Lubrication Category Acoustics Category Mechanics ... more details
An Automatic Lubrication System ALS , often referred to as a Centralized Lubrication System, generally ... times from a central location. TOC Reason for an Automatic Lubrication System Whether the equipment ... the physical location or type of machine often makes this approach to lubrication impossible. As a result ... at which machinery is lubricated which is not optimal for the point requiring lubrication. Auto lube systems are installed on machinery to address this problem. Benefits of an Automatic Lubrication System Auto lube systems have many advantages over traditional methods of manual lubrication All critical components are lubricated, regardless of location or ease of access Lubrication occurs while ... bearing and increasing the machine s availability. Proper lubrication of critical components ... costs Measured lubrication amounts means no wasted lubricant Safety no climbing around machinery ... Lubrication System Regardless of the manufacturer or type of system, all automatic lubrication ... points. The lubricant is pumped through this. Different Types of Automatic Lubrication Systems There are several different types of automatic lubrication systems including Single Line Parallel ... The 3 most commonly used Automatic Lubrication System types are Single Line Parallel, Dual Line Parallel ... Automatic Lubrication System.png thumb 250px alt Single Single Line Progressive Automatic Lubrication System Single Line Progressive Automatic Lubrication System A single line progressive system ... as monitored through a designated piston cycle switch. Lubricant is fed to the multiple lubrication points one after another via secondary progressive metering valves sized for each series of lubrication ... Quicklub Centralized & Automated Lubrication Systems . April 2007. ref Single Line Parallel Image Single Line Parallel Automatic Lubrication System.png thumb 250px alt Single Line Parallel Automatic Lubrication System Single Line Parallel Automatic Lubrication System The first single line parallel ... more details
and Lubrication Engineering homepage www.stle.org The Society of Tribologists and Lubrication Engineers ... companies and organizations that comprise the tribology and lubrication engineering business sector ... from around the world to learn and share the best practices for the tribology and lubrication fields ... of lubrication engineering in order to foster innovation, improve the performance of equipment ... interest in advancing the science of tribology and the practice of lubrication engineering. This international ... as the American Society of Lubrication Engineers ASLE . From these early days, into the 1980s, the organization s primary audience was plant engineers in charge of lubrication for production equipment ... needs, the organization s membership voted in 1987 to change the name to Society of Tribologists and Lubrication ... base of lubrication engineers and suppliers of liquid lubricants. Organization STLE is incorporated ... February 2011 Membership Membership in the STLE is open to anyone involved with tribology and lubrication ... to anyone with an interest in lubrication engineering. Associate membership carries voting ... of lubrication engineering at a collegiate level, whether they be undergraduate or graduate and offers ... Joint Tribology conferences each year. Publications STLE s magazine Tribology & Lubrication Technology ... and lubrication industries. citation needed date February 2011 On top of these significant .... Tribology & Lubrication Technology is the official monthly magazine of STLE and is provided free ..., lubrication fundamentals and more. TLT published its first issue in October 2003 and in June 2009 ... of surfaces and interfaces in relative motion, among which are friction, lubrication, wear, adhesion ... training programs to further the success of the individual in the lubrication industry. citation ... a credible real professional and a self proclaimed expert. These 3 exams are the Certified Lubrication ... CMFS . Certified Lubrication Specialist CLS is the only independent certification for the lubrication ... more details
Multiple issues orphan July 2010 unreferenced July 2010 Space tribology is a subset of the tribology lubrication field dealing with the reliable performance of satellite s and spacecraft including the space station . It encompasses the entire gamut of tribological regimes, including elastohydrodynamic lubrication EHL , parched EHL, transient EHL, boundary lubrication , and mixed lubrication. DEFAULTSORT Space Tribology Category Satellites physics stub ... more details
Grease gun may refer to Grease gun tool , a common workshop tool used for lubrication M3 submachine gun , commonly nicknamed grease gun disambig ja ... more details
Lubricity is the measure of the reduction in friction of a lubricant . The study of lubrication and mechanism wear is called tribology . Measurement of lubricity Lubricity of a material cannot be directly measured, so tests are performed to quantify a lubricant s performance. This is done by determining how much wear is caused to a surface by a given friction inducing object in a given amount of time. Other factors such as surface size, temperature, and pressure are also specified. The greater the wear scar the worse the lubricity. For this reason lubricity is also termed a substance s anti wear property . Examples of test setups include Ball on cylinder and Ball on three discs tests. Lubricity in diesel engines In a modern diesel engine , the fuel is part of the engine lubrication process. Diesel fuel naturally contains sulfur compounds that provide good lubricity, but because of regulations in many countries such as the Ultra low sulfur diesel North America US and the European emission standards EU sulphur must be removed. Reformulated diesel fuel that does not have biodiesel added has a lower lubricity and requires lubricity improving additives to prevent excessive engine wear. ref Reformulated Diesel Fuels and Fuel Injection Equipment Author Hugh C. Grigg Lucas Powertrain Systems Presented at the New Fuels and Vehicles for Cleaner Air Conference, January 11 12, 1994, Phoenix, Arizona. Retrieved via Google from a publication of the National Biodiesel Board, entitled Lubrication ref ref Fuels for Diesel Engines Diesel Fuel Injection Equipment Manufacturers Common Position Statement, Signed by Delphi Diesel Systems, Stanadyne Automotive Corp., Denso Corporation, and Robert Bosch GmbH, issued June, 2000 Retrieved via Google from a publication of the National Biodiesel Board, entitled Lubrication ref ref Diesel Fuel Lubricity Authors Paul Lacey and Steve Westbrook Southwest ... Lubrication ref See also Boundary lubrication Superlubricity Tribology References Reflist Category ... more details
wiktionary greasy Greasy may refer to Greasy, Oklahoma , United States Greasy lubrication , to be lubricated Greasy Neale 1891 1973 , American football coach A term used to imply something as illegal, under the table or unethical See also Grease disambiguation disambig pt Greasy ... more details
Wiktionary Seize may refer to Seisin , legal possession Seizing , a class of knots used to semi permanently bind together two ropes Seize band , a British electronic band The jamming of machine parts against each other, usually due to insufficient lubrication See also Impoundment Confiscation Detain Raptus Sequester disambiguation Usurper Disambig fr Seize ... more details
unreferenced date November 2010 Image Suzuki AX 100.jpg thumb 260px Suzuki AX 100 2001 model Suzuki AX 100 is a two stroke engine two stroke , 100 cc motorcycle from Suzuki . Engine and transmission Displacement 97.20 cc 5.93 cubic inches Engine type Single cylinder engine single cylinder , two stroke, case reed induction Ignition capacitor discharge ignition Gearbox 4 speed Lubrication Automatic lubrication of two stroke oil Starter Kick start Wheel s 18 inch Brakes Drum brake front and rear DEFAULTSORT Suzuki Ax100 Category Suzuki motorcycles AX100 Motorcycle stub ... more details
EHD may refer to Electrohydrodynamics Elastohydrodynamic lubrication External hard drive hard disk drive Epizootic hemorrhagic disease European Heritage Days Extrahepatic bile duct , bile duct Godzilla vs. the Sea Monster Ebirah, Horror of the Deep , 1966 Godzilla film El Hadji Diouf , a Senegalese footballer See also lookfrom intitle HD disambiguation EH disambiguation disambig Category Initialisms Long comment to avoid being listed on short pages ... more details
Wiktionary Oil pump Oil pump may refer to A hydraulic pump , which pressurizes hydraulic fluid in a hydraulic system An oil pump internal combustion engine , a part of the lubrication system that pressurizes motor oil for distribution around the engine A pump jack , often used to pump oil out of wells A submersible pump , often used to pump oil out of wells disambig bs Pumpa za ulje vor ... more details
Spindle oils are a type of low viscosity mineral oil s marketed for use in lubrication of high speed machine spindle tool spindle s. ref name BP References Reflist refs ref name BP cite web title Product Information BP Spindle Oil url http www.bp.com liveassets bp internet lubricants bp north america STAGING local assets downloads b BP7769.pdf ref Category Lubricants zh ... more details
lubrication became more prevalent and the ring oiler fell from use. A ring oiler is a simple device ... a simple lubrication pump, with only one moving part and no complex or high precision components. The device ... capacity required more lubrication than could be supplied by a drip feed oiler. For this reason they were ... oiler ref cite web title Lubrication url http www.tpub.com content construction 14265 css 14265 199.htm page 6 3 ref References Commons category Ring oilers Reflist Category Engine lubrication systems Category Lubrication Category Bearings ... more details
Orphan date February 2009 Unreferenced stub auto yes date December 2009 Micro pitting is a fatigue material fatigue failure of the surface of a material commonly seen in rolling Bearing mechanical bearings and gears . It is also known as grey staining , micro spalling or frosting . Pitting and micropitting The difference between pitting corrosion and micropitting is the size of the pits after surface material fatigue fatigue . Pits formed by micropitting are approximately 10 20 m in depth, and micropitted metal often has a frosted or gray appearance. Normal pitting creates larger and more visible pits. Micropits are originated from the local contact of Asperity material science asperities produced by improper lubrication . Causes In a normal bearing mechanical bearing the surfaces are separated by a layer of lubricant oil , this is known as elastohydrodynamic EHD lubrication . If the thickness of the EHD film is of the same order of magnitude as the surface surface roughness roughness , the surface topography is able to interact and cause micro pitting. A thin EHD film may be caused by excess load or temperature, a lower oil viscosity than is required, low speed or water in the oil. Water in the oil can make micro pitting worse by causing hydrogen embrittlement of the surface. Micro pitting occurs only under poor EHD lubrication conditions. A surface with a deep scratch my break exactly at the scratch if stress is ablied. One can imagine that the surface roughness is a composite of many very small scratches. So high surface roughness decreases the stability on heavy stressed parts. To get a good overview of the surface an areal scan Surface metrology gives more information that a measurment along a single profile profileometer . To quantify the surface roughness the ISO 25178 can be used. See also Pitting corrosion Corrosion DEFAULTSORT Micro Pitting Category Corrosion Category Materials degradation Material stub de Graufleckigkeit ... more details
Multiple issues advert March 2010 coi March 2010 confusing March 2010 refimprove March 2010 expert March 2010 Image Green gascan.JPG thumb A can of green gas Green Gas is a propellant commonly used as the pressurized power source for various Airsoft related weaponry, and typically consists of propane gas with a small amount of silicone oil added for lubrication purposes. Green Gas is a popular propellant in the Airsoft community, but limited availability of the product has led many Airsoft players to create their own derivatives using retail propane and silicone oil The mixture is then administered using specially made propane adapters . Product names of Green Gas typically vary from Green Gas to Ultra Blow Back Gas or similar, though they are all inherently the same type of Green Gas propellent. Propane adapter As most Airsoft players have noted that propane and silicone oil constitutes the majority of Green Gas propellant, manufacturers have produced adapters that attach to propane tanks that are available at many retail stores, usually including reservoirs to store lubricant usually silicone oil . The propane option has become popular in that the solution is cheaper in the long run than Green Gas, as well as being more widely available compared to Green Gas. Experienced players have noted that with the propane option, however, lubrication quantities should be noted in different temperatures as decreased lubrication in propellant is detrimental to the highly sensitive mechanisms of gas Airsoft weapons. See also Airsoft Airsoft guns Propane HFC134a HCFC 22 External links http www.airsoft innovations.com Airsoft Innovations, the manufacturer of the Propane Adapter http www.greengas.ru The Only manufacturer of the GreenGas and HFC 134a in Russia Category Airsoft Category Propellants ja ... more details
Refimprove date September 2008 The o ring chain is a specialized type of roller chain used in the transmission of mechanical power from one sprocket to another. Construction The o ring Roller chain chain is named for the rubber o ring s built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease lubricant grease inside of the pin and bushing wear areas. Further, the rubber o rings prevent dirt and other contaminants from entering the inside of the chain linkages, where such particles would otherwise cause significant wear. Applications O ring chains are most notably used in motorcycle s, one of the most demanding applications for a metal chain. High revolutions per minute rpm and heavy loads require bulky chains, but such engineering increases the effect of friction compared to lighter chains. So lubrication plays a vital role here, but the high rpm also make it very difficult to keep lubrication inside and on the chain. Additionally, motorcycle chains are exposed to a large volume of contaminants and particles and must be protected. O rings, as described above, fit this application perfectly. External links http chain guide.com The Complete Guide to Chain http will.mylanders.com mc loobman Automatic chain oiler review Category Chains Category Motorcycle transmissions Category Mechanical power transmission Category Mechanical power control de O Ring Kette nl O ringenketting ... more details
by the International Council for Machinery Lubrication ICML . See also multicol Lubricant LubricationLubrication theory Mineral oil s Oil additive multicol break Oil sampling Penetrating oil Tribology Viscosity index multicol end External links http www.stle.org Society of Tribologists and Lubrication ... Council for Machinery Lubrication http www.practicingoilanalysis.com article detail.asp?articleid ... Motor oils Category Petroleum Category Hydraulics Category Engine lubrication systems ... more details
Oil pressure is an important factor in the longevity of most internal combustion engine s. With a forced lubrication system invented by Frederick Lanchester , oil is picked up by a positive displacement oil pump and forced through oil galleries passageways into Bearing mechanical bearings , such as the main bearing s, big end s and camshaft bearings. Other components such as cam lobes and cylinder walls are lubricated by oil jets. Sufficient oil pressure ensures that the metal of the rotating shaft journal and the bearing shell can never touch, and wear is therefore confined to initial start up and shutdown. The oil pressure, combined with the rotation of the shaft, also hydrodynamically centers the journal in its shell and cools the bearings. Such a bearing is known as a fluid bearing. Oil pressure is higher when the engine is cold due to the increased viscosity of the oil, and also increases with engine speed until the relief valve opens to divert excess flow. Oil pressure is lowest under hot idling conditions, and the minimum pressure allowed by the manufacturer s tolerances is usually given at this point. Excessive oil pressure may indicate a blocked filter, blocked oil gallery or the wrong grade of oil. Low oil pressure indicates worn bearings on the crank shaft or a broken oil pump. References Empty section date September 2010 External links http www.aa1car.com library us1097.htm Troubleshooting Low Oil Pressure from AA1Car Category Engine lubrication systems Category Engine technology bs Pritisak ulja ... more details
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