Friction
Synovial Fluid
Cartilage, Articular
Sexual Dysfunction, Physiological
Sexual Dysfunctions, Psychological
Hyaluronic Acid
Dyspareunia
Joints
Viscosity
Surface Properties
Chondroitin ABC Lyase
Actinomyces viscosus
Wettability
Frequent use of lubricants for anal sex among men who have sex with men: the HIV prevention potential of a microbicidal gel. (1/109)
OBJECTIVES: This study assessed frequency of rectal lubricant use, opinions about rectal microbicidal gels, and willingness to participate in acceptability trials of rectal microbicides among Latino men who have sex with men (MSM). METHODS: Latino MSM (N = 307) living in New York City were surveyed from October 1995 through November 1996. Eleven Latino MSM participated in a focus group. RESULTS: Among those having anal sex during the prior year, 93% used lubricants (59% always and 74% in at least 80% of sexual encounters) regardless of condom use. Of the 29 men who practiced anal sed but did not use condoms, 90% used lubricants with similar frequency. Of those using lubricants, 94% used at least 1 teaspoon per occasion. A transparent product, free of smell and taste, was favored. Of the MSM in the sample, 92% said that they would use a lubricant with an anti-HIV microbicidal agent, and 87% expressed interest in participating in an acceptability trial. Product and dispenser preferences also were discussed. CONCLUSIONS: A rectal lubricant with microbicidal properties appears acceptable and desirable to Latino men who have anal sex with other men. (+info)Femoral prosthetic heads and their significance in polyethylene wear. (2/109)
We used scanning electron microscopy to perform an ultrastructural analysis and two optical interferometric profilers to measure roughness on 40 prosthetic femoral heads. We expressed roughness as Ra (roughness average) value and Rsk (roughness skewness) value. Our results show that in order to obtain an ideal surface finish a low or not very high Ra value and a negative Rsk value are needed. The presence of depressions or holes (rather than scratches) with smooth (rather than sharp) edges seems to improve the lubrication and wettability properties. (+info)Review article: the therapy of constipation. (3/109)
Constipation is a common symptom that may be idiopathic or due to various identifiable disease processes. Laxatives are agents that add bulk to intestinal contents, that retain water within the bowel lumen by virtue of osmotic effects, or that stimulate intestinal secretion or motility, thereby increasing the frequency and ease of defecation. Drugs which improve constipation by stimulating gastrointestinal motility by direct actions on the enteric nervous system are under development. Other modalities used to treat constipation include biofeedback and surgery. Laxatives and lavage solutions are also used for colon preparation and evacuation of the bowels after toxic ingestions. (+info)Gel lubrication of the tracheal tube cuff reduces pulmonary aspiration. (4/109)
BACKGROUND: Leakage of fluid occurs along the longitudinal folds within the wall of an inflated high-volume, low-pressure cuff. Theoretically, lubrication of the cuff with a water-soluble gel might prevent aspiration by plugging the channels in the cuff wall. Pulmonary aspiration during anesthesia has been linked with postoperative pneumonia and during critical illness causes ventilator-associated pneumonia. METHODS: Lubricated cuffs were compared with nonlubricated cuffs for leakage of dye placed in the subglottic space to the tracheobronchial tree in a benchtop model (n = 5) and in a prospective double-blinded randomized controlled trial of anesthetized patients (n = 36). The duration of the efficacy of the lubricant was determined in a prospective open observational study of critically ill patients with tracheostomies (n = 9). Dye was detected clinically by dye coloration of secretions during tracheal suctioning. RESULTS: In the benchtop model the incidence of leakage was 0% in the lubrication group and 100% in the nonlubrication group (P < 0.01). Dye leakage in anesthetized patients was 11% in the lubrication group and 83% in the nonlubrication group (P < 0.0001). In the critically ill patients with lubricated cuffed tracheostomy tubes, leakage first occurred after a median period of 48 h (range, 24-120 h). CONCLUSIONS: Cuff lubrication with a water-soluble gel reduces pulmonary aspiration in anesthetized patients. In the critically ill patient with a tracheostomy the protective effect is lost after 24-120 h. (+info)Comparative evaluation of tableting compression behaviors by methods of internal and external lubricant addition: inhibition of enzymatic activity of trypsin preparation by using external lubricant addition during the tableting compression process. (5/109)
This study evaluated tableting compression by using internal and external lubricant addition. The effect of lubricant addition on the enzymatic activity of trypsin, which was used as a model drug during the tableting compression process, was also investigated. The powder mixture (2% crystalline trypsin, 58% crystalline lactose, and 40% microcrystalline cellulose) was kneaded with 5% hydroxypropyl cellulose aqueous solution and then granulated using an extruding granulator equipped with a 0.5-mm mesh screen at 20 rpm. After drying, the sample granules were passed through a 10-mesh screen (1680 microm). A 200-mg sample was compressed by using 8-mm punches and dies at 49, 98, 196, or 388 MPa (Mega Pascal) at a speed of 25 mm/min. The external lubricant compression was performed using granules without lubricant in the punches and dies. The granules were already dry coated by the lubricant. In contrast, the internal lubricant compression was performed using sample granules (without dry coating) containing 0.5% lubricant. At 98 MPa, for example, the compression level using the external lubricant addition method was about 13% higher than that for internal addition. The significantly higher compressing energy was also observed at other MPas. By comparison, the friction energy for the external addition method calculated based on upper and lower compression forces was only slightly larger. The hardness of tablets prepared using the internal addition method was 34% to 48% lower than that for the external addition method. The total pore volume of the tablet prepared using the external addition method was significantly higher. The maximum ejection pressure using the no-addition method (ie, the tablet was prepared using neither dry-coated granules nor added lubricant) was significantly higher than that of other addition methods. The order was as follows: no addition, external addition, and then internal addition. The ejection energy (EE) for internal addition was the lowest; for no addition, EE was the highest. In the dissolution test, the tablets obtained using external addition immediately disintegrated and showed faster drug release than those prepared using internal addition. This result occurred because the water penetration rate of the tablet using the external addition was much higher. The trypsin activity in tablets prepared using the external addition method was significantly higher than that produced using the internal addition method at the same pressure. All these results suggest that the external addition method might produce a fast-dissolution tablet. Because the drug will be compressed using low pressure only, an unstable bulk drug may be tableted without losing potency. (+info)Additives in plastics. (6/109)
The polymers used in plastics are generally harmless. However, they are rarely used in pure form. In almost all commercial plastics, they are "compounded" with monomeric ingredients to improve their processing and end-use performance. In order of total volume used, these monomeric additives may be classified as follows: reinforcing fibers, fillers, and coupling agents; plasticizers; colorants; stabilizers (halogen stabilizers, antioxidants, ultraviolet absorbers, and biological preservatives); processing aids (lubricants, others, and flow controls); flame retardants, peroxides; and antistats. Some information is already available, and much more is needed, on potential toxicity and safe handling of these additives during processing and manufacture of plastics products. (+info)Female condom reuse in Lusaka, Zambia: evidence from 12 cases. (7/109)
Female condom reuse could address one of the principal barriers to use, namely, cost; however, the safety of reuse has not been established. Recent reports have provided information related to reuse safety under carefully specified research study conditions. Still, little is known about reuse outside a research study context, and there are outstanding questions related to feasibility of reuse among general populations. This study reports on naturally occurring reuse from a small, purposive sample of self-identified women who, prior to the study, had reused the female condom of their own volition without reuse instruction. Three types of reuse were identified. Most women attempted to clean devices between removal and reinsertion. A number of agents, including water (only), bath soap, laundry detergent, Dettol, and beer were used for cleaning. A number of agents were used for relubrication, including Reality((R)) lubricant, various kinds of cooking oil, and Vaseline((TM)). Perception of the strength and integrity of female condoms making them suitable for reuse were influenced by both provider advice and product packaging. Most participants reported no problems with reuse. Some women, faced with barriers to single use of a female condom or use of an acceptable alternative, will resort to reuse and rely on their own "common sense" notions to implement reuse. Providers and purveyors have opportunities to shape responses to reuse for the better, and the research community is obligated to provide a solid scientific base regarding reuse safety. (+info)Some new evidence on human joint lubrication. (8/109)
Theoretical consideration has been given to the use of pendulum machines which are used to examine the frictional properties of human joints by incorporating them as fulcra. As a result, a new type of pendulum machine has been built which incorporates the facility to apply sudden loads to the joint on starting the swinging motion, and also the ability to measure directly the frictional torque experienced by the joint. The results obtained from natural hip joints indicate the presence of squeeze film lubrication under conditions of sudden loading of a joint. In addition, a self-generated fluid film process was observed at low loads while at higher loads boundary lubrication appeared to be important. These results have been used to describe the lubrication regimens occurring in a normal activity such as walking. A single experiment carried out on a hip from a patient suffering from severe rheumatoid arthritis has also been reported and the frictional resistance was seen to be increased fifteenfold compared to a normal hip. (+info)In medical terms, lubrication refers to the application of a slippery substance or fluid to reduce friction and facilitate smooth movement between two surfaces. This is particularly relevant in the context of human anatomy, where lubrication plays a crucial role in various bodily functions. For instance, the mucous membranes that line body cavities such as the mouth, vagina, and rectum secrete fluids to provide lubrication for easy movement of tissues and foreign substances (like food or during sexual intercourse). Similarly, synovial fluid, a viscous substance found in joints, provides lubrication that enables smooth articulation between bones. Artificial lubricants may also be used in medical procedures to facilitate the insertion and movement of medical devices such as catheters or endoscopes.
Medical definitions of "lubricants" refer to substances that are used to reduce friction between two surfaces in medical procedures or devices. They can be used during various medical examinations, surgeries, or when inserting medical equipment, such as catheters, to make the process smoother and more comfortable for the patient.
Lubricants used in medical settings may include water-based gels, oil-based jellies, or silicone-based lubricants. It's important to choose a lubricant that is safe and suitable for the specific medical procedure or device being used. For example, some lubricants may not be compatible with certain medical materials or may need to be sterile.
It's worth noting that while lubricants are commonly used in medical settings, they should not be used as a substitute for proper medical care or treatment. If you have any concerns about your health or medical condition, it's important to consult with a qualified healthcare professional.
I'm sorry for any confusion, but "friction" is not a term that has a specific medical definition. Friction is a physical concept that describes the force that resists the sliding of one surface over another. It is commonly described as the "roughness" between two surfaces. While friction can have effects on various biological processes and medical devices, it does not have a unique medical meaning in and of itself.
Synovial fluid is a viscous, clear, and straw-colored fluid found in the cavities of synovial joints, bursae, and tendon sheaths. It is produced by the synovial membrane, which lines the inner surface of the capsule surrounding these structures.
The primary function of synovial fluid is to reduce friction between articulating surfaces, providing lubrication for smooth and painless movement. It also acts as a shock absorber, protecting the joints from external forces during physical activities. Synovial fluid contains nutrients that nourish the articular cartilage, hyaluronic acid, which provides its viscoelastic properties, and lubricin, a protein responsible for boundary lubrication.
Abnormalities in synovial fluid composition or volume can indicate joint-related disorders, such as osteoarthritis, rheumatoid arthritis, gout, infection, or trauma. Analysis of synovial fluid is often used diagnostically to determine the underlying cause of joint pain, inflammation, or dysfunction.
An orgasm is a complex response to sexual stimulation that involves a series of physiological changes, including muscle contractions in the pelvic region, increased heart rate and blood pressure, and a release of endorphins and other neurotransmitters. It is often accompanied by intense feelings of pleasure and can be followed by a sense of relaxation. In men, orgasm is typically associated with ejaculation, but they are actually two distinct processes. While both males and females can experience orgasm, the specific physiological events that occur during an orgasm can vary between individuals and sexes.
Articular cartilage is the smooth, white tissue that covers the ends of bones where they come together to form joints. It provides a cushion between bones and allows for smooth movement by reducing friction. Articular cartilage also absorbs shock and distributes loads evenly across the joint, protecting the bones from damage. It is avascular, meaning it does not have its own blood supply, and relies on the surrounding synovial fluid for nutrients. Over time, articular cartilage can wear down or become damaged due to injury or disease, leading to conditions such as osteoarthritis.
Physiological sexual dysfunction refers to any issues or problems that an individual experiences in their sexual response cycle, which can be broken down into four phases: excitement, plateau, orgasm, and resolution. These difficulties may include a lack of desire or interest in sex (low libido), difficulty becoming aroused (erectile dysfunction in men or inadequate lubrication in women), challenges reaching orgasm, or pain during sexual activity (dyspareunia).
Physiological sexual dysfunctions can be caused by a variety of factors, including medical conditions (such as diabetes, heart disease, neurological disorders, or hormonal imbalances), medications (including some antidepressants and blood pressure drugs), substance abuse, surgical procedures, or aging. Psychological factors, such as stress, anxiety, depression, relationship issues, or past traumatic experiences, can also contribute to sexual dysfunction.
It is important to note that sexual dysfunctions are common and nothing to be ashamed of. If you are experiencing symptoms of sexual dysfunction, it is recommended that you consult a healthcare professional for an evaluation and appropriate treatment options.
Sexual dysfunctions, psychological, refer to disorders that affect a person's ability to engage in sexual activity due to psychological factors. These factors can include stress, anxiety, depression, relationship issues, past traumatic experiences, and negative attitudes towards sex.
The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) identifies several types of sexual dysfunctions that can be caused by psychological factors:
1. Sexual Interest/Arousal Disorder - characterized by a lack of interest in sexual activity or an inability to become sexually aroused.
2. Male Hypoactive Sexual Desire Disorder - characterized by a persistent or recurrent lack of desire for sexual activity in men.
3. Female Sexual Arousal Disorder - characterized by an inability to become physically aroused during sexual activity.
4. Male Erectile Disorder - characterized by the inability to achieve or maintain an erection.
5. Female Orgasmic Disorder - characterized by a delay in or absence of orgasm despite adequate stimulation.
6. Male Orgasmic Disorder - characterized by a delay in or absence of orgasm after sufficient sexual stimulation and desire.
7. Premature (Early) Ejaculation - characterized by ejaculation that occurs before the person wishes it to, leading to distress or frustration.
8. Genito-Pelvic Pain/Penetration Disorder - characterized by pain or discomfort during vaginal penetration.
These disorders can cause significant distress and impact a person's quality of life, relationships, and overall well-being. Treatment for psychological sexual dysfunctions typically involves psychotherapy, counseling, and education to address the underlying psychological factors contributing to the disorder.
Hyaluronic acid is a glycosaminoglycan, a type of complex carbohydrate, that is naturally found in the human body. It is most abundant in the extracellular matrix of soft connective tissues, including the skin, eyes, and joints. Hyaluronic acid is known for its remarkable capacity to retain water, which helps maintain tissue hydration, lubrication, and elasticity. Its functions include providing structural support, promoting wound healing, and regulating cell growth and differentiation. In the medical field, hyaluronic acid is often used in various forms as a therapeutic agent for conditions like osteoarthritis, dry eye syndrome, and skin rejuvenation.
Dyspareunia is a medical term that describes painful sexual intercourse. This condition can affect both men and women, but it is more commonly reported by women. The pain can occur in various locations, such as the vaginal opening, deep inside the vagina, or in the pelvic region. It can be caused by a variety of factors, including physical conditions like vulvodynia, endometriosis, or vaginal infections, as well as psychological factors like anxiety, depression, or relationship issues. Treatment for dyspareunia depends on the underlying cause and may include medication, therapy, or lifestyle changes.
A joint is the location at which two or more bones make contact. They are constructed to allow movement and provide support and stability to the body during motion. Joints can be classified in several ways, including structure, function, and the type of tissue that forms them. The three main types of joints based on structure are fibrous (or fixed), cartilaginous, and synovial (or diarthrosis). Fibrous joints do not have a cavity and have limited movement, while cartilaginous joints allow for some movement and are connected by cartilage. Synovial joints, the most common and most movable type, have a space between the articular surfaces containing synovial fluid, which reduces friction and wear. Examples of synovial joints include hinge, pivot, ball-and-socket, saddle, and condyloid joints.
Viscosity is a physical property of a fluid that describes its resistance to flow. In medical terms, viscosity is often discussed in relation to bodily fluids such as blood or synovial fluid (found in joints). The unit of measurement for viscosity is the poise, although it is more commonly expressed in millipascals-second (mPa.s) in SI units. Highly viscous fluids flow more slowly than less viscous fluids. Changes in the viscosity of bodily fluids can have significant implications for health and disease; for example, increased blood viscosity has been associated with cardiovascular diseases, while decreased synovial fluid viscosity can contribute to joint pain and inflammation in conditions like osteoarthritis.
Surface properties in the context of medical science refer to the characteristics and features of the outermost layer or surface of a biological material or structure, such as cells, tissues, organs, or medical devices. These properties can include physical attributes like roughness, smoothness, hydrophobicity or hydrophilicity, and electrical conductivity, as well as chemical properties like charge, reactivity, and composition.
In the field of biomaterials science, understanding surface properties is crucial for designing medical implants, devices, and drug delivery systems that can interact safely and effectively with biological tissues and fluids. Surface modifications, such as coatings or chemical treatments, can be used to alter surface properties and enhance biocompatibility, improve lubricity, reduce fouling, or promote specific cellular responses like adhesion, proliferation, or differentiation.
Similarly, in the field of cell biology, understanding surface properties is essential for studying cell-cell interactions, cell signaling, and cell behavior. Cells can sense and respond to changes in their environment, including variations in surface properties, which can influence cell shape, motility, and function. Therefore, characterizing and manipulating surface properties can provide valuable insights into the mechanisms of cellular processes and offer new strategies for developing therapies and treatments for various diseases.
I'm sorry for any confusion, but "Industrial Oils" is not a term that has a specific medical definition. Industrial oils are typically used in machinery and equipment for various industrial applications, such as hydraulic systems, lubricants, and coolants. They are not directly related to medicine or human health.
However, if a person were to come into contact with these oils through their occupation, there could be potential health effects, such as skin irritation or respiratory issues, depending on the specific type of oil and the nature of the exposure. But this would not fall under a medical definition of the term itself.
Chondroitin ABC lyase, also known as chondroitinase ABC or chondroitin sulfate eliminase, is an enzyme that breaks down chondroitin sulfate proteoglycans (CSPGs), which are major components of the extracellular matrix in various tissues including cartilage. CSPGs contain chondroitin sulfate chains, which are long, negatively charged polysaccharides composed of alternating sugars (N-acetylgalactosamine and glucuronic acid) with sulfate groups attached at specific positions.
Chondroitin ABC lyase cleaves chondroitin sulfate chains by removing a disaccharide unit from the polymer, resulting in the formation of unsaturated bonds between the remaining sugars. This enzymatic activity has been used in research to study the structure and function of CSPGs and their role in various biological processes, such as cell migration, tissue repair, and neural plasticity. Additionally, chondroitin ABC lyase has potential therapeutic applications for treating conditions associated with excessive accumulation of CSPGs, such as fibrosis and some neurological disorders.
Actinomyces viscosus is a gram-positive, anaerobic, rod-shaped bacterium that is commonly found in the oral cavity and upper respiratory tract of humans. It is a normal resident of the human microbiota but can cause infections in immunocompromised individuals or when it gains access to deeper tissues, such as the pulp of teeth or the soft tissues of the head and neck.
Actinomyces viscosus has been associated with dental caries, periodontal disease, and endodontic infections. It can also cause actinomycosis, a chronic suppurative and granulomatous infection that typically affects the cervicofacial region, thorax, or abdomen.
The name "viscosus" refers to the sticky, mucoid appearance of the bacterial colonies when grown in culture. Actinomyces viscosus is closely related to other species of Actinomyces, such as A. israelii and A. gerencseriae, which can also cause actinomycosis.
"Wettability" is not a term that has a specific medical definition. It is a term that is more commonly used in the fields of chemistry, physics, and materials science to describe how well a liquid spreads on a solid surface. In other words, it refers to the ability of a liquid to maintain contact with a solid surface, which can have implications for various medical applications such as the design of medical devices or the study of biological surfaces. However, it is not a term that would typically be used in a clinical medical context.
Mechanical stress, in the context of physiology and medicine, refers to any type of force that is applied to body tissues or organs, which can cause deformation or displacement of those structures. Mechanical stress can be either external, such as forces exerted on the body during physical activity or trauma, or internal, such as the pressure changes that occur within blood vessels or other hollow organs.
Mechanical stress can have a variety of effects on the body, depending on the type, duration, and magnitude of the force applied. For example, prolonged exposure to mechanical stress can lead to tissue damage, inflammation, and chronic pain. Additionally, abnormal or excessive mechanical stress can contribute to the development of various musculoskeletal disorders, such as tendinitis, osteoarthritis, and herniated discs.
In order to mitigate the negative effects of mechanical stress, the body has a number of adaptive responses that help to distribute forces more evenly across tissues and maintain structural integrity. These responses include changes in muscle tone, joint positioning, and connective tissue stiffness, as well as the remodeling of bone and other tissues over time. However, when these adaptive mechanisms are overwhelmed or impaired, mechanical stress can become a significant factor in the development of various pathological conditions.
Lubrication
Acoustic lubrication
Lubrication (disambiguation)
Lubrication theory
Automatic lubrication
Splash lubrication
Vaginal lubrication
Social Lubrication
Oil mist lubrication
Automatic lubrication system
Mitsubishi Air Lubrication System
Society of Tribologists and Lubrication Engineers
Engine officer
Robert Hudson (company)
T.B. (Thompson Brothers)
Roller chain
Automatic transmission fluid
Ring oiler
Skateboard
DC100
Total base number
SAE J300
Dream Wife (band)
Base oil
Purolator Filters
Steam locomotive
Friction modifier
User experience
Hugh Spikes
Colloid mill
Lubrication - Wikipedia
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MECHANICAL LUBRICATION OF ROLLING MILL SPINDLES
| Emerald Insight
Bearing Lubrication3
- In this whitepaper, understand the hidden costs of lubrication understand how improper bearing lubrication can increase expenses exponentially, and discover how dry-running bearings can reduce costs and increase operation. (machinedesign.com)
- Here, Chris Johnson, managing director of specialist bearing supplier SMB Bearings , explores how to keep the ball rolling when standard bearing lubrication lets you down. (engineerlive.com)
- Improper bearing lubrication or re-lubrication accounts for up to 40 to 50 percent of machine failures. (maintenanceworld.com)
Boundary lubrication4
- Contact between raised solid features, or asperities, can also occur, leading to a mixed-lubrication or boundary lubrication regime. (wikipedia.org)
- Boundary lubrication is defined as that regime in which the load is carried by the surface asperities (high points) rather than by the lubricant. (wikipedia.org)
- Mixed lubrication: This regime is in between the full film elastohydrodynamic and boundary lubrication regimes. (wikipedia.org)
- The boundary lubrication characteristics of sulfonates, phenates, and salicylates in a silicon nitride on silicon nitride contact were investigated. (nist.gov)
Lubricant9
- Lubrication is the process or technique of using a lubricant to reduce friction and wear and tear in a contact between two surfaces. (wikipedia.org)
- As the load increases on the contacting surfaces, distinct situations can be observed with respect to the mode of lubrication, which are called lubrication regimes: Fluid film lubrication is the lubrication regime in which, through viscous forces, the load is fully supported by the lubricant within the space or gap between the parts in motion relative to one another object (the lubricated conjunction) and solid-solid contact is avoided. (wikipedia.org)
- In hydrostatic lubrication, external pressure is applied to the lubricant in the bearing to maintain the fluid lubricant film where it would otherwise be squeezed out. (wikipedia.org)
- In hydrodynamic lubrication, the motion of the contacting surfaces, as well as the design of the bearing, pump lubricant around the bearing to maintain the lubricating film. (wikipedia.org)
- At full film elastohydrodynamic lubrication, the generated lubricant film completely separates the surfaces. (wikipedia.org)
- Due to the strong coupling between lubricant hydrodynamic action and the elastic deformation in contacting solids, this regime of lubrication is an example of Fluid-structure interaction. (wikipedia.org)
- The system is based on colours and symbols for easy identification of the lubricant and the lubricant requirements of each lubrication point. (klueber.com)
- Presented by MetalForming magazine and the Precision Metalforming Association, and with the support of the Society of Tribologists and Lubrication Engineers (STLE) and the Original Equipment Suppliers Association (OESA), conference topics, covered by industry leading speakers, will help attendees better determine which lubricant choice is best for the tasks at hand, and how to ensure optimal performance while minimizing waste. (metalformingmagazine.com)
- Selecting the right type or types of lubricant, storing and filtering them correctly, monitoring bearing noise, and ensuring that over-lubrication and under-lubrication don't occur all play an important role. (uesystems.com)
Bearings7
- Adequate lubrication allows smooth, continuous operation of machine elements, reduces the rate of wear, and prevents excessive stresses or seizures at bearings. (wikipedia.org)
- Lubrication is required for correct operation of mechanical systems such as pistons, pumps, cams, bearings, turbines, gears, roller chains, cutting tools etc. where without lubrication the pressure between the surfaces in close proximity would generate enough heat for rapid surface damage which in a coarsened condition may literally weld the surfaces together, causing seizure. (wikipedia.org)
- The allowable unit pressure depends upon operating conditions, especially in regard to lubrication, design of bearings, workmanship, velocity, and nature of load. (engineersedge.com)
- Quite often, OEMs will accept the lubrication that is supplied as standard with their bearings. (engineerlive.com)
- However, the standard lubrication that is often supplied with these bearings is only operational up to 110 degrees Celsius. (engineerlive.com)
- When rolling element or sleeve bearings operate under extreme conditions, it's more important than ever to follow proper lubrication selection and maintenance procedures to maximize effective life and efficient performance. (maintenanceworld.com)
- But how does graphite lubrication behave at a high-contact pressure of several gigapascals, such as it occurs in rolling bearings? (fraunhofer.de)
Tribology2
- The study of lubrication is a discipline in the field of tribology. (wikipedia.org)
- 1955), "MECHANICAL LUBRICATION OF ROLLING MILL SPINDLES", Industrial Lubrication and Tribology , Vol. 7 No. 3, pp. 40-41. (emerald.com)
Hydrodynamic7
- Lubrication mechanisms such as fluid-lubricated systems are designed so that the applied load is partially or completely carried by hydrodynamic or hydrostatic pressure, which reduces solid body interactions (and consequently friction and wear). (wikipedia.org)
- The basis of the hydrodynamic theory of lubrication is the Reynolds equation. (wikipedia.org)
- The governing equations of the hydrodynamic theory of lubrication and some analytical solutions can be found in the reference. (wikipedia.org)
- Much as in hydrodynamic lubrication, the motion of the contacting bodies generates a flow induced pressure, which acts as the bearing force over the contact area. (wikipedia.org)
- Boundary film lubrication: The hydrodynamic effects are negligible. (wikipedia.org)
- The most important aspects of the health and longevity of a fluid film bearing are proper selection, proper installation, proper lubrication, and the alternating hydrodynamic loads imposed on the bearing surface by relative shaft-to-bearing vibration. (engineersedge.com)
- The aim of this paper was to propose a novel in silico mixed elasto-hydrodynamic lubrication model with the purpose of wear prediction in Total Hip Replacements (THRs). (mdpi.com)
20192
Friction2
- Furthermore, they examined the effect of air humidity in graphite lubrication as the lubrication becomes ineffective at insufficient humidity, and the two friction contacts are instead cold-welded together. (fraunhofer.de)
- The project's outcome raises an important question: Can the lubrication work despite the transformation of the lubricating graphite layer on the friction partners? (fraunhofer.de)
Little lubrication2
- However, even some uncircumcised guys prefer the feeling of a little lubrication between the penis head and the foreskin. (jackinworld.com)
- Think a little lubrication might quiet it down? (onthehouse.com)
Different lubrication1
- Depending on the degree of surface separation, different lubrication regimes can be distinguished. (wikipedia.org)
Elastohydrodynamic3
- Elastohydrodynamic lubrication: Mostly for nonconforming surfaces or higher load conditions, the bodies suffer elastic strains at the contact. (wikipedia.org)
- The classical elastohydrodynamic theory considers Reynolds equation and the elastic deflection equation to solve for the pressure and deformation in this lubrication regime. (wikipedia.org)
- As a follow up of this report, the authors plan to report minimum oil film thickness and the distribution of oil film thickness with respect to an engine's individual rotation speed when Elastohydrodynamic Lubrication (EHL) is used. (sae.org)
Practices3
- This is the first in a 9 part Lubrication Practices Benchmarking Study produced by Mike Johnson, CMRP and Terrence O'Hanlon, CMRP, Reliabilityweb.com. (surveymonkey.com)
- Machinery Lubrication I (ML I) provides the foundational skillset for applying best lubrication practices and product knowledge. (noria.com)
- It is our belief that a world class lubrication program consists of researching, documenting and implementing the best lubrication practices and regulatory requirements as defined by the leaders in the lubrication and reliability industry (Noria, SMRP, ICML, etc.) as well as regulatory agencies (OSHA, EPA). (maintenanceworld.com)
Pave the way2
- Ultrasound-assisted lubrication can pave the way toward a best-in-class condition monitoring program at your plant. (plantservices.com)
- In a recently published article in the journal Nature Communications, they specify how their findings pave the way for the future use of graphite lubrication in high-pressure applications. (fraunhofer.de)
OEMs1
- By eliminating lubrication from machinery, OEMs can minimize the costs and risks associated with maintenance for the end user. (maintenanceworld.com)
Machinery6
- In celebration of its 15th anniversary, Machinery Lubrication magazine presents 15 of the best lubrication tips that have been offered through the years. (machinerylubrication.com)
- Machinery and Equipment MRO interviewed three oil and lubrication specialists to uncover industry trends that are important to suppliers and users alike. (maintenanceworld.com)
- View the Machinery Lubrication I course page for more information. (noria.com)
- Automatic lubricating systems, lubrication equipment, bulk grease transfer systems, pumps and other lubricating machinery are available through us. (iqsdirectory.com)
- For example, in high temperature applications, lubrication choice can have as much of a detrimental effect on your machinery as if you'd specified the wrong bearing altogether. (engineerlive.com)
- The ambient environment your machinery needs to perform in isn't the only thing that can get your lubrication hot under the collar. (engineerlive.com)
Salivary5
- The effect of cations and epigallocatechin gallate on in vitro salivary lubrication. (bvsalud.org)
- Tribological measurements were used to characterize the lubrication response of KCl, MgCl2 , FeCl3, and AlCl3 in combination with EGCG to the ex vivo salivary pellicle . (bvsalud.org)
- Contrarily, trivalent salts aggregated together with the salivary mucins via ionic cross-link interactions, which led to a decrease in salivary lubrication . (bvsalud.org)
- FeCl3 and AlCl3 affected the salivary lubrication differently, which was attributed to changes in the pH . (bvsalud.org)
- This resulted in less desorption of the salivary film , retaining the lubrication ability of salivary proteins . (bvsalud.org)
Reliability2
- It offers maximum reliability in preventing lubricants from being applied to the wrong lubrication points or filled into the wrong application equipment. (klueber.com)
- Strategically positioned in the market, BEKA Lubrication supplies automatic lubrication systems that not only improve reliability when compared to manual lubrication, but also lengthen the equipment service life. (ien.eu)
Mechanisms1
- These missions will involve advanced mechanical moving components, space mechanisms that will need wear protection and lubrication. (nasa.gov)
System15
- For these reasons, special care must be taken when selecting and implementing a lubrication system and special vibration monitoring techniques must be applied. (engineersedge.com)
- The Klüber Lubrication Labelling Service is a system for consistent identification of lubricants and application equipment as well as their storage positions and packages. (klueber.com)
- IQS Directory provides a detailed list of lubrication system manufacturers and suppliers. (iqsdirectory.com)
- Find lubrication system companies that can design, engineer, and manufacture lubrication systems to your specifications. (iqsdirectory.com)
- Peruse our website to review and discover top lubrication system manufacturers with roll over ads and complete product descriptions. (iqsdirectory.com)
- Connect with the lubrication system companies through our hassle-free and efficient request for quote form. (iqsdirectory.com)
- Whether you are looking for manufacturers of metal stamping lubrication system, ballscrew lubrication systems, or micro lubrication systems of every type, IQS is the premier source for you. (iqsdirectory.com)
- A system of mechanical lubrication for rolling mill spindle couplings has been sent us by de Jonge Marcel of Belgium, who states that this method has been adopted on mills of Esperance‐Longdoz Company at Liege, John Cockerill at Athus, and Ongrée‐Marihaye Company at Liege. (emerald.com)
- Many iron‐smelting companies on the Continent now fitting this system which, in addition to providing efficient mechanically applied lubrication to this difficult position, also saves maintenance departments twenty minutes a shift formerly spent on manual application. (emerald.com)
- The aim of this paper is to provide a framework for the integration of internet of things with minimum quantity lubrication system during metal-cutting process, focusing to provide cleaner environment to manpower at shop floor. (ssrn.com)
- In last decade, minimum quantity lubrication system was studied and implemented effectively to optimize the metal cutting process at shop floor. (ssrn.com)
- Minimum quantity lubrication system was found to be most promising technique with respect to technical, economic and environmental aspects. (ssrn.com)
- After review, it was found that if internet of things is integrate with minimum quantity lubrication system then it leads to new research area in the field of smart manufacturing. (ssrn.com)
- This paper briefed an evaluation of manufacturing - socio based manual operation of minimum quantity lubrication system and propose scope for integration of it with internet of things for an economic and an environmental viewpoint. (ssrn.com)
- This investigation provides an outline of integration of internet of things with minimum quantity lubrication system. (ssrn.com)
Optimize1
- During the live Q&A portion of the webinar, 'Ultrasound Assisted Lubrication,' Naro tackled several attendee questions on how to optimize a lubrication program using ultrasound technology. (plantservices.com)
Solve1
- We seek to create products that solve lubrication problems you may be having. (iqsdirectory.com)
Program7
- Within the vendor selection program there are four parts to successful lubrication program management. (surveymonkey.com)
- An in-depth look at Luneta's Condition Monitoring Pod (CMP) and how it can improve your lubrication program. (reliableplant.com)
- Through ML I, students can move away from the "old school" methods of vague, non-specific lubrication procedures and implement an excellent lubrication program in any industrial workplace. (noria.com)
- PS: How do I start an ultrasound program and meld it into my time-based lubrication program? (plantservices.com)
- Over time, we start melding it into the program, learning to trust it, until we finally convert over to a true condition-based lubrication program. (plantservices.com)
- There are different thoughts of what constitutes a "world class lubrication program. (maintenanceworld.com)
- There are seven critical items or steps that are essential for the success of a lubrication program with regards to the FSMA. (machinerylubrication.com)
Temperatures1
- During these processes, high-strength aluminum-alloy blanks are heated and formed in a press at temperatures from 1000 to 5000 C. Sound lubrication selection and use is essential to successful forming using these developing processes. (metalformingmagazine.com)
Conveyor1
- In the packaging industry or on food production lines, wherever smooth-running conveyor systems with freedom from lubrication are necessary, durable knife edge rollers help transfer goods precisely onto following conveyors. (designworldonline.com)
Precise1
- The most precise lubrication in the world won't help if the lubricants in question are poor quality, contaminated or breaking down under heat and pressure. (uesystems.com)
Products5
- This breakthrough nGlide technology platform can be expanded through blending into many lubrication products as a drop-in concentrate solution for hundreds of applications for the crucial oil and gas sector economy. (reliabilityweb.com)
- We distribute specialty lubricants, chain lubricators and other lubrication products. (iqsdirectory.com)
- We manufacture lubrication equipment and lubricating systems, and develop standard and custom products for broad and narrow markets. (iqsdirectory.com)
- OPCO Lubrication Systems, Inc. has been a leading manufacturer of lubrication products and systems for almost fifty years. (iqsdirectory.com)
- Machines are subjected to regular wash down and are often exposed to steam, not to mention the fact that any leaking lubrication that makes its way into food products can lead to very expensive product recalls. (engineerlive.com)
Components1
- When lubrication breaks down, components can rub destructively against each other, causing heat, local welding, destructive damage and failure. (wikipedia.org)
Proper2
- Proper lubrication plays a critical role in successfully stamping these new alloys. (metalformingmagazine.com)
- Long-term analysis of field data shows that the lack of proper lubrication is the most commonly cited cause of bearing failure and accounts for over 40 percent of breakdowns. (maintenanceworld.com)
Oils3
- Worn journals may weep thin oils quickly, reducing the effective lubrication, so heavier oils may be better there. (briarpress.org)
- Klüber Lubrication (Londonderry, NH) includes industrial gear oils in the company's maintenance, repair and operations (MRO) portfolio. (foodmanufacturing.com)
- American-made MRO gear oils from Klüber Lubrication include both mineral-based and synthetic PAO-based lubricants that benefit a range of applications. (foodmanufacturing.com)
Automatic4
- Pulsarlube U.S.A. produces manual, semiautomatic and fully automatic lubricating systems as well as centralized lubrication systems. (iqsdirectory.com)
- We provide top-quality lubrication systems throughout the U.S., and we lead the global industry in the manufacture of automatic single-point lubricators. (iqsdirectory.com)
- Moreover, automatic lubrication systems are more sustainable and control better the environmental impact of overlubrication. (ien.eu)
- Internet of things-minimum quantity lubrication (IoT-MQL) integration provides a platform to automatic control the effect of cutting temperature generated during metal cutting process, due to which tool life and productivity affects significantly. (ssrn.com)
Occur1
- At the same time, when lubrication becomes contaminated or depleted of its sustaining properties, overheating or exhaustion are among the problems that can occur. (maintenanceworld.com)
Steps1
- These lubrication programs employ the steps that differentiate effective lubrication programs with excellent cost avoidance from ineffective, low cost avoidance lubrication programs. (reliableplant.com)
Equipment4
- Our lubrication equipment includes that for precision metering plus mill coolant and corrosion inhibitor application. (iqsdirectory.com)
- Welcome to J. Dedoes, manufacturer & distributor of sealant, adhesive & lubrication dispensing equipment. (iqsdirectory.com)
- The general lubricating oil has been unable to meet the lubrication requirements of the equipment. (iberocruceros.com)
- Many times overlooked, lubrication is far more complex than just buying oil or grease and throwing it into your equipment. (uesystems.com)
Machine2
- So, while you think you've specified a bearing that can cope, the lubrication will let your machine down and performance will suffer. (engineerlive.com)
- In this scenario, not only do you risk contaminating food, you are also losing lubrication and machine performance will be adversely affected. (engineerlive.com)
Process1
- Selecting the right material, size and type of bearing to suit your needs can be a long, complex process, so it's hardly surprising that lubrication can be overlooked. (engineerlive.com)
Analysis2
- The following formulas provide a complete lubrication analysis which forms the basis for the bearing design. (engineersedge.com)
- This article reports annual cost savings from several effective lubrication programs using onsite oil analysis. (reliableplant.com)
Procedures1
- Plan now to attend this important conference, February 12-13, 2020, in Novi (Detroit), MI, focused on state-of-the-art technology, processes and procedures for ensuring an optimal lubrication strategy for metal stamping and tool and die manufacturing. (metalformingmagazine.com)
Applications1
- Our specialty is the manufacture of lubrication systems for metalworking applications in the casting, cold roll forming, nonferrous extrusion, stamping and tube manufacturing industries. (iqsdirectory.com)
Question1
- Have a question about lubrication? (jackinworld.com)
Systems1
- We design and manufacture lubrication systems and make repairs. (iqsdirectory.com)
Page1
- I've been reading through the manual and page 1-58 got my attention where lubrication is discussed. (planetarypinball.com)
Lines1
- Versatile: combining three pumping units for higher output or manage up to three lubrication lines. (directindustry.com)
Design1
- The international NanoMech engineering team led by Dr. Ajay P. Malshe, has devised a bio-inspired breakthrough solution engineered using newly discovered design rules of architecting multicomponent chemistries at molecular scale, to deliver advanced lubrication under the most extreme operating conditions. (reliabilityweb.com)
Provide1
- nGlide is architectured to provide immediate lubrication advantages. (reliabilityweb.com)
Model1
- In expanding the current model of graphite lubrication, we have laid a better foundation for understanding it. (fraunhofer.de)
