This standard specifies the terms, definitions and classifications of sliding bearings. This standard applies to sliding bearings for general machinery. GB/T 2889-1994 Sliding bearing terminology GB/T2889-1994 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Terms of Plain Bearings
Plain bearings--Terms, definitions and classification1 Subject content and scope of application
This standard specifies the terms, definitions and classification of plain bearings. This standard applies to plain bearings for general machinery. 2 Basic terms
2.1 Bearing
Parts (components) used to determine the relative motion position between the shaft and other parts, and to support or guide. 2.2 External frictionexternal frictionThe tangential impedance phenomenon between the contact surfaces of two objects when they are in relative motion. Internal frictioninternal friction
The impedance phenomenon when the particles in the same object are in relative motion. Static frictionstatic friction
The external friction between the contact surfaces of two objects when they are in microscopic displacement before macroscopic displacement. 2.5
dynamic frictiondynamic friction
The external friction between the contact surfaces of two objects when they are in relative motion. Sliding friction sliding friction
Kinetic friction between two contacting objects, where the magnitude and/or direction of the tangential velocities of the contacting surfaces are different. 2.7
Rolling friction rolling friction
GB/T 2889-94
Replaces GB2889--82
Kinetic friction between two contacting objects, where the magnitude and direction of the tangential velocities of at least one point on the contacting surfaces are the same. 2.8 combined rolling and sliding friction friction between two contacting objects, where rolling and sliding friction occur simultaneously on the contacting surfaces. 2.9 unlubricated friction friction between two contacting surfaces when no lubricant is added. Also called dry friction. 2.10 lubricated friction friction between two contacting surfaces when a lubricant is added. Plain bearing
Bearing in which only sliding friction occurs.
Plain bearing unit includes the tribological system of the plain bearing.
2.13 Wear
The process of material loss on a solid friction surface, manifested as a change in the size and/or shape of the object. 2.14 Lubrication
Approved by the State Administration of Technical Supervision on December 27, 1994 and implemented on October 1, 1995
GB/T2889-94
Measures to supply lubricant to the friction surface to reduce friction and/or reduce wear and surface damage. 2.15 Tribology
A science of theory and practice concerning interacting surfaces in relative motion. 3 Types of plain bearings
3.1 Plain journal bearing Plain bearing that bears radial (perpendicular to the axis of rotation) loads. 3.2 Plain thrust bearing Plain bearing that bears axial (along or parallel to the axis of rotation) loads. 3.3 Thrust-journal plain bearing Thrust-journal plain bearing Plain bearing that bears both radial and axial loads. 3.4 Steadily loaded plain bearing A plain bearing that bears a load that does not change in size and direction. 3.5 Dynamically loaded plain bearing A plain bearing that bears a load that changes in size and/or direction. 3.6 Hydrodynamic bearing A plain bearing that operates under complete hydrodynamic lubrication. Hydrostatic bearing 3.7
A plain bearing that operates under hydrostatic lubrication. 3.8 Aerodynamic bearing A plain bearing that operates under aerodynamic lubrication. 3.9 Aerostatic bearing A plain bearing that operates under aerostatic lubrication. 3.10 Hybrid bearing A plain bearing that can operate under both hydrostatic and hydrodynamic lubrication, or under both hydrostatic and hydrodynamic lubrication. 3.111
Bearing with solid lubricant A plain bearing lubricated with solid lubricant. 3.12
Unlubricated bearingUnlubricated bearingSliding bearing without lubricant before and during operation. Self-lubricating bearingSliding bearing made of self-lubricating material or pre-filled with lubricant and sealed for long-term use, so no lubricant is added during operation.
3.14Porous bearingPorous bearingSliding bearing made of porous material, whose pores can be filled with lubricant, or whose pores can be used as throttlesFluid static bearings. 5Magnetic bearingsMagnetic bearings
Sliding bearings that use magnetic field force to suspend the shaft. 3.16
Electrostatic bearingsElectrostatic bearingsSliding bearings that use electric field force to suspend the shaft. 3.17Plain self-aligning bearingSliding bearing that can adjust the axis angle relative to the surface of the journal. 3Floating-ring bearingFloating-ring bearing3.18
Radial sliding bearing with a floating ring between the journal and the bearing. 4
3.19 Pad bearing
GB/T 2889—94
A sliding bearing whose bearing surface is composed of a number of pads. 3.20
Tilting-pad bearing A sliding bearing whose bearing surface is composed of a number of pads, each of which can adjust its tilt angle relative to the supported surface under the action of fluid dynamic (static) pressure.
Circular plain bearing A sliding bearing whose inner hole cross-section is circular. 3.22Noncircular plain bearing A sliding bearing whose inner hole cross-section is noncircular. 3.23Lobed plain bearing A radial sliding bearing whose sliding surface has a special irregular shape and forms a number of wedge-shaped fluid dynamic pressure zones along its circumference during operation. Monolayer (solid) plain bearing3.24
A sliding bearing made of a single layer of material.
Multilayer plain bearing3.25
Sliding bearing made of several layers of different materials. 3.26
Multilayer metallic bearingSliding bearing made of several layers of different metals or alloys. 3.27
Powder metallurgy bearingPowder metallurgy bearingSliding bearing made of powder metallurgy materials. Plastic bearingplastic bearing
Sliding bearing made of polymer or with polymer lining. Jewel bearing
Sliding bearing made of hard materials such as diamond and gemstone. 3.30Rubber bearingrubber bearingSliding bearing made of rubber.
4Structural elements of sliding bearings
4.1Sliding surface
The surface of the journal and bearing that is subjected to sliding friction. 4.2
Journal
The part of the shaft supported by the radial bearing.
Thrust collar
A collar supported by a thrust bearing to transmit axial load. 4.4 Plain bearing boreThe inner hole of a radial plain bearing that matches the journal. 4.5 Plain bearing housingThe housing in which the bearing bush (sleeve) is installed.
4.6 Plain bearing housing bore The hole in the bearing housing that matches the bearing bush (sleeve). Plain bearing bush
A circular, simple integral component that matches the journal in a radial plain bearing. 4.8 Wrapped bearing bush
A circular, simple component that is rolled with a single or multiple layer of material. 4. 9 Plain bearing half-liner(liner)GB/T 2889--94
A split component that matches the journal in a radial plain bearing. 4.10 Thin walled half bearing(liner) A bearing with a small wall thickness so that the macroscopic geometry of its inner hole is mainly determined by the shape of the bearing housing hole. 4.11
Thick walled half bearing(liner) A bearing with a large wall thickness. After being installed in the bearing housing hole, the macroscopic geometry of its inner hole is little affected by the shape of the housing hole. 4.12
Solid bearing liner(bush)Bearing liner(bush) made of one material. 4.13Multilayer bearing liner(bush)Bearing liner(bush) made of several layers of different materials. 4.14Flanged bearing liner(bush)Bearing liner(bush) with flanges at one or both ends. 4.15Locating elementStructural elements such as tongues, grooves, and small holes used for positioning on bearings. 4.16Bearing liner backingMetal support on multilayer bearings(bush) that supports the liner and gives the bearing the required strength and/or stiffness. 4.17Bearing anti-friction layerFriction-reducing material of multilayer bearings(bush).
4.18 Bearing running-in layer A layer of material applied to the anti-friction layer of a bearing to improve running-in properties. 4.19 Pad
A sector-shaped or other shaped element that makes up a pad bearing. Those that cannot swing are called fixed pads, and those that can swing about a fulcrum are called tilting pads.
4.20 Thrust washer
A ring-shaped plate or two semi-ring-shaped plates usually used with radial sliding bearings to bear axial loads. 4.21
Oil groove
A groove on a sliding surface for supplying and distributing lubricating oil. Oil hole
A hole on a shaft or bearing for the entry and exit of lubricating oil.
Oil duct
A passage for lubricating oil to enter the oil hole.
4. 24 Oil recess (pocket) A cavity on the sliding surface of a bearing for storing oil. 4.25 Land
The working surface of the bearing around the oil cavity in a hydrostatic bearing or a hydrostatic bearing. Compensator
compensator
In a hydrostatic bearing or a hydrostatic bearing, a device that uses a throttle or a constant flow valve to automatically adjust the pressure to adapt to the load and its changes.
4.27 Restrictor
In a hydrostatic bearing or a hydrostatic bearing with constant pressure oil (gas), an automatic flow regulating device placed before the inlet. 4.28
Constant flow valve
In a hydrostatic bearing or a hydrostatic bearing with a fixed oil (gas) supply, a device that keeps the oil (gas) inlet of each cavity at a fixed value. 6
5 Dimensional characteristics of plain bearings
GB/T 2889-94
5.1 Plain journal bearing inside diameter(radius)5.2 Shaft diameter(radius)Shaft diameter(radius)The diameter of the shaft section perpendicular to the axis of the journal. Bearing seat bore diameter
The diameter of the seat hole perpendicular to the center line of the bearing seat hole and matching the bearing bush (sleeve)5.4 Oil hole diameteroil hole diameterThe diameter of the hole for the lubricating oil to enter and exit the bearing (journal). The diameter of the oil hole located on the sliding surface is used for calculation. 5.5 Bearing liner(bush)widthThe axial width of the bearing bush (sleeve).
5.6 Bearing effective widthThe width of the bearing on the sliding surface, excluding the oil groove and chamfer. Width of oil groovewidth of oil groove
The axial width of the oil groove on the bearing (journal). The width of the oil groove located on the sliding surface is used for calculation. Width-diameler ratio
The ratio of the width of a plain bearing to its bore diameter.
The diameter clearance of a plain journal bearing The difference between the diameter of the plain bearing bore and the diameter of the journal, referred to as bearing clearance. 5.10 Radial ciearance of circular plain bearing The difference between the radius of the plain bearing bore and the radius of the journal. 5.11
Radial clearance of noncircular plain bearing
The difference in radius when the plain bearing bore and the journal are coaxial in a given radial direction. 2 Axial clearance of plain bearing5. 12
The maximum possible movement between the shaft and the bearing in a thrust bearing. Relative clearance of plain bearing5.13
The ratio of the diameter clearance of a plain bearing to the journal diameter, or the ratio of the radius clearance to the journal radius. Half bearing(bush)wall thickness5.14
The distance between the inner and outer surfaces of a bearing(bush) on a given radius5.15
Bearing anti-friction layer thicknessThe thickness of a layer of anti-friction material on the bearing liner. Half peripheral length of bearing liner5.16
The circumferential length of the outer surface of the bearing.
5.17Nip(crush)
The dimension of the bearing exceeding the half circumference of the inspection seat hole when the bearing is pressed into the inspection seat hole under a given test load. 5.18Inclination of bearing parting faceThe non-parallel deviation value between the bearing parting face and the inspection seat parting face measured along the entire axial length of the bearing. 5.19Free spreadThe difference between the outer diameter of the bearing parting face and the diameter of the bearing seat hole in the free state. 5.20 Bearing bore reliefThe amount of reduction in the wall thickness of the bearing liner on the inner surface. 5.21 Degree of bedding of bearing linerThe ratio of the actual contact area between the outer surface of the bearing liner and the inner surface of the bearing seat or the test seat to the nominal contact area6Sliding bearing materials and their properties
GB/T 2889-94
Anti-friction bearing material6.1
Material with anti-friction properties.
Sintered bearing material6.2
Bearing material manufactured by sintering process.
Composite bearing material6.3
Bearing material synthesized from different components (metal, plastic, solid lubricant). 6.4 Self-lubricating bearing material Self-lubricating bearing material Bearing material with low friction coefficient without lubricant. 6.5 Frictional compatibility The property of bearing material to prevent adhesion with journal material during friction 6.6 Frictional conformability The property of bearing material to compensate for initial poor fit of sliding surface by elastic-plastic deformation of surface layer. Embeddability
The property of bearing material to allow hard particles to embed and reduce damage or abrasive wear. 6.8
Running-in ability
The property of bearing material to reduce friction, temperature and wear during running-in. running-in
6.9 Running-in process
The process of changes in the geometric shape of friction surface and the physical, chemical and mechanical properties of material surface layer at the initial stage of friction, usually showing reduced friction, temperature and wear when external conditions remain unchanged. 6.10 Wear resistance
The performance of a bearing material in resisting wear, expressed as the inverse of the wear rate or degree of wear under specified friction conditions. 6.11 Relative wear resistanceRelative wear resistanceThe ratio of the wear resistance of a bearing material to that of a standard material under the same conditions. 2 Fatigue resistance6.12
The performance of a bearing material in resisting fatigue damage. 7 Calculation of sliding bearing performance
7.1 Coordinate in the direction of movement(rotation)Coordinate along the direction of relative movement of the journal or the bearing working surface. 7.2 Coordinate across the lubrication filmCoordinate along the direction of the lubrication film thickness.
7.3 Coordinate parallel to the bearing axisCoordinate along the direction of the journal or the bearing axis. 7.4 Bearing axial loadBearing radial loadBearing radial loadBearing radial loadBearing radial load 7.6 Fluid friction
Internal friction caused by the viscous or rheological resistance of the fluid. 7.7 Friction force
The tangential resistance on the friction surface when two objects move relative to each other. 8
GB/T 2889—94
Maximum static friction forceThe limit of friction before macroscopic displacement occurs. Coefficient of friction7.9
The ratio of the friction force between two objects to their normal pressure. Sliding velocity
The difference in tangential velocity at the contact point when two objects slide relative to each other. 7.11
Linear velocity of bearing(shaft)Linear velocity of the sliding surface of the bearing(shaft).
7.12Angular velocity of bearing(shaft)Angular velocity of the sliding surface of the bearing(shaft).Friction power
Power lost by a sliding bearing due to friction. Quantitatively expressed as the product of friction and sliding velocity.Friction heat
Heat generated during the friction process.
7.15Bearing projected areaBearing projected area of ​​the working surface of a sliding bearing along the load direction.7. 16Bearing mean specific loadBearing mean specific loadRatio of the load to the projected area of ​​a sliding bearing.7. 17
Maximum permissible (specific) bearing loadThe maximum pressure value at which the bearing will not fail.
7.18Pressure-velocity value (pu value)pu factorThe product of bearing pressure and surface velocity (for thrust bearings, it is the average surface velocity), often called pu value. 7.19
Wear extent
The amount of material transferred or lost on the friction surface during the wear process, expressed in units of length, volume or mass. 7.20
Wear rate
Wear rate
The ratio of the wear amount to the time elapsed for the wear to occur. 7.21
Wear intensity
The ratio of the wear amount to the prescribed amount allowed for the wear to occur. 7.22
Bearing load carrying capacityBearing load carrying capacityThe maximum load that a sliding bearing can withstand during normal operation. 7.23
Bearing centre lineBearing centre lineThe line connecting the center of the journal and the center of the bearing.
Eccentricityeccentricity
The radial offset of the center of the journal to the center of the radial sliding bearing. Eccentricityrelative eccentricity
The ratio of eccentricity to radial clearance.
7.26attitude angle
The angle between the centerline of the bearing and the load direction. Load angle
The angle between the load direction and the fixed coordinate axis. 7.28lubricant film
A layer of lubricant separating the shaft from the friction surface of the bearing. When oil (gas) is used as the lubricant, it is also called oil (gas) film. 7.29lubricant film pressureGB/T2889—94
The pressure of the bearing journal or bearing load formed in the lubricant film. 7.30lubricant film pressure distributionlubricant film pressure distributionThe distribution of pressure in the lubricant film at various points on the bearing friction surface under the condition of complete fluid lubrication. Wedge effect
The effect of pressure generated by viscous fluid flowing into the wedge-shaped gap in a convergent direction. 7.32
squeeze effect
When the journal and the bearing sliding surface approach each other along the normal direction, the fluid in the bearing gap is squeezed and produces pressure. Compression effectcompression effect
The effect of pressure rise caused by compression when the gas in a gas bearing flows from a large gap into a small gap. 7.34Diffusion effectThe effect of distortion of gas film pressure distribution caused by the gas in a gas bearing flowing out divergently around the throttle hole. angular span of partial bearing7.35
The arc angle of the load-bearing area of ​​a radial sliding bearing surrounding the journal. 6 Somrmerfeld number7.36
The similarity parameter of the relative load-bearing capacity of the hydrodynamic lubrication state of a sliding bearing. 7.37 lubricant feed pressureThe pressure of lubricant supplied to the bearing.
7.38 Lubricant film thicknesslubricant film thicknessThe lubricant film thickness between relative sliding surfaces measured along the radial direction (radial bearing) or axial direction (thrust bearing). 7.39
minimum oil (gas) film thicknessminimum oil (gas) film thicknessminimum value of oil (gas) film thickness.
7.40 Critical oil (gas) film thicknessoil (gas) film critical thieknessThe minimum allowable value of oil (gas) film thickness that ensures that the journal and the bearing sliding surface are completely separated. 7.41 least permissible lubricant film thicknessleast permissible lubricant film thicknessThe minimum permissible lubricant film thickness greater than the film thickness limit to ensure normal operation of the bearing. locus of journal center7.42
The motion locus of the journal rotation center relative to the bearing center. 7.43oil flaw in bearingthe volume flow of lubricant flowing through the cross section of the bearing gap per unit time. 7.44lubricant flow rate through the bearing sectionthe volume flow of lubricant flowing through the cross section of the bearing per unit time. 7.45relative lubricant flow raterelative lubricant flow ratedimensionless parameter. Defined as the ratio of the volume flow of lubricant in the moving bearing to the geometric and speed characteristic parameters. heat flow rateheat flow rate
The amount of heat generated by friction in the lubricating film and transferred by heat conduction and/or heat radiation per unit time. 7.47ambient temperatureambient temperature of the bearing working environment.
7.48 Lubricant filn inlet temperatureThe instantaneous temperature of the lubricant oil before entering the bearing.
9 Lubricant film temperature7.49
The temperature of the lubricant on the working surface of the bearing.
7.50 Lubricant film limiting temperatureThe maximum temperature of the lubricant film that keeps the lubricant film from failing. 10
GB/T 2889-94
7.51 Lubricant film effective temperatureThe temperature determined by the volume flow rate of the lubricant carrying the oil film according to thermal equilibrium. 7.52 Least permissible bearing temperatureThe maximum operating temperature of the bearing that keeps the bearing from failing. 7.53
Shaft journal temperature
The average temperature of the shaft journal surface under operating conditions. Reynolds numberReynolds number
Determined by the ratio of the inertial force of the lubricating film to the internal friction force, a similar parameter that characterizes the flow characteristics of the sliding bearing lubricant. 7.55
dynamic viscosity of lubricantdynamic viscosity of lubricantdynamic viscosity of lubricantThe tangential force required for a unit area of ​​fluid layer per unit distance to produce a unit flow rate. Lubricant specific heat7.56
The amount of heat required to raise the temperature of a unit mass of lubricant by 1°C. Lubricant densitylubricant density
The mass of a unit volume of lubricant.
7.58coefficient of lubricant thermal conductivitycoefficient of lubricant thermal conductivityThe amount of heat flow of lubricant per unit area perpendicular to the direction of heat flow that causes the temperature of the lubricant to change by 1°C in the direction of heat flow.
Coefficient of heat transfer at the lubricant film and7.59
housing boundary
The amount of heat transferred from the lubricant to the bearing surface per unit area when the temperature along the boundary area decreases by 1°C per unit time. 7.60 Heat-emitting bearing housing surface areaThe area of ​​the bearing housing surface that dissipates the friction heat of the bearing. 7.61
Coefficient of heat transfer of bearing housing surfaceThe amount of heat radiated from the bearing housing surface per unit area to the atmosphere when the temperature along the boundary area decreases by 1°C per unit time. 7.62
Surface roughness parameterThe parameter for evaluating the height characteristics of the microscopic roughness of the surface profile. Usually refers to the arithmetic mean deviation of the profile (R.), the ten-point height of the microscopic roughness (R.) or the maximum height of the profile (R.).
7.63 Bearing torque rence moment
The sum of the products of the tangential force at each point on the interface between the rotating part and the lubricating film and its rotation radius when the shaft and the bearing rotate relative to each other. 7.64 Oil (gas) film stiffness The derivative of the oil (gas) film bearing capacity with respect to the eccentricity, that is, the ratio of the oil (gas) film bearing capacity increment to the eccentricity increment. 7.65 Oil (gas) film whirl The instability phenomenon that occurs when the sliding bearing is running. 7. 66 Compression number The dimensionless number used in the calculation of gas bearings to indicate the degree of influence of the gas compression effect on the bearing performance. 8 Wear process and damage phenomenon of sliding bearings
8.1 Wear process
The process of continuous loss or transfer of solid friction surface material. 8.2 Mechanical wear Wear caused by mechanical action.
8.3 Abrasive wear
abrasive wear
Mechanical wear caused by the cutting or scraping action of hard objects or hard particles. GB/T 2889-94
8.4 Hydroabrasive (gasabrasive) wearMechanical wear caused by the action of hard objects or hard particles entrained in the flowing liquid or gas. 8.5 Fluid erosion wearFluid erosionMechanical wear caused by the erosion action of liquid or gas flow. 8.6 Fatigue wearFatigue wear
Mechanical wear caused by fatigue damage of the micro volume of the friction surface material under repeated deformation. 8.7 Cavitation wear
Mechanical wear caused by local impact high pressure or local high temperature when bubbles in the liquid burst near the solid surface when the solid moves relative to the liquid.
8.8 Fretting wear
Mechanical wear caused by the relative movement of two contacting objects. 8.9 Adhesive wear
Mechanical wear of uneven surfaces caused by the transfer of materials between the two friction surfaces due to adhesion. 8.10 Mechano-chemical wear Wear caused by mechanical action and chemical and (or) electrochemical action between the material and the environment. Oxidative wear Oxidative wear
Chemical wear caused by chemical reaction between the material and the oxidizing medium. 8.12 Fretting corrosion Mechano-chemical wear caused by the slight relative movement of two contacting objects in a corrosive medium. 8.13 Electroerosive wear Surface wear caused by the discharge of electric current. 8.14 Stick-slip motion The phenomenon of alternating relative sliding and relative stillness or alternating increase and decrease of relative sliding speed that occurs naturally during dynamic friction, also known as "creeping".
Adhesion
Local adsorption phenomenon caused by molecular forces between two friction solids. 8.16 Transfer of material The phenomenon that material falls off from one object and adheres to the surface of another object during friction. 8.17
Seizure
The phenomenon that damage occurs due to adhesion and material transfer of the friction surface. 8.18 Scoring
The phenomenon that serious scratches are formed on the friction surface along the sliding direction. 8.19 Scratching
The phenomenon that the friction surface forms fine scratches along the sliding direction due to the unevenness or hard particles on the harder sliding surface. Spalling
The phenomenon that the friction surface causes the material to fall off in pieces due to fatigue wear. 8.21
Pitting
The phenomenon that the friction surface material falls off due to fatigue wear and forms pits. 9 Sliding bearing lubrication type and lubrication method
9.1 Lubrication (type of) The role of lubricant in reducing wear, surface damage and (or) friction. 9.2 Liquid lubrication liquid lubrication12
GB/T2889—94
Lubrication in which the friction surface is separated by liquid lubricant. 9.3 Gas lubrication gas-film lubrication Lubrication in which the friction surface is separated by gas lubricant. 9.4 Solid film lubrication Lubrication in which the friction surfaces are separated by a solid lubricant. Hydrodynamic lubrication 9.5
Liquid lubrication in which the friction surfaces are completely separated by the pressure generated by the liquid film between them. 9.6
Hydrostatic lubrication Liquid lubrication in which the friction surfaces are completely separated by the liquid pressed into the gap from the outside. 9.7
Aerodynamic lubrication Gas lubrication in which the friction surfaces are completely separated by the pressure generated by the gas film between them. 9.8Aerostatic lubrication Gas lubrication in which the friction surfaces are completely separated by the gas pressed into the gap from the outside. 9.9Elasto-hydrodynamic lubrication Lubrication in which the friction between the friction surfaces and the thickness of the liquid lubricating film depend on the elastic properties of the material and the rheological properties of the lubricant. 9.10Boundary lubricationBoundary lubrication Lubrication in which the friction and wear between the friction surfaces depend on the properties of the surface materials and the properties of the lubricant other than viscosity. Semi-liquid lubrication9.11
Lubrication in which liquid lubrication is achieved on part of the friction surface. Extreme-pressure lubrication9.12
Lubrication in which the friction and wear between the friction surfaces depend on the chemical reaction of the lubricant with the friction surface under heavy load and high temperature. 9.13
Thick-film lubricationLubricating in which the thickness of the lubricating film is much greater than the height of the micro-convexities on the working surface. Mixed-film lubrication9.14
Lubrication between liquid lubrication and boundary lubrication. 9.15
Method of lubricationMethod of supplying lubricant to the friction surface. Continuous lubricationA lubrication method in which lubricant is continuously supplied to the friction surface. Intermittent lubricationA lubrication method in which lubricant is intermittently supplied to the friction surface. 9.18 Life-time lubricationA lubrication method in which lubricant is supplied only before the system is put into operation for the first time. 9.19
circulating lubrication A lubrication method in which a lubricant is circulated through the friction surface by mechanical means. 9.20
once-through lubrication A lubrication method in which a lubricant is intermittently or continuously supplied to the friction surface without flowing back into the lubrication system. force-feed lubrication 9.21
A lubrication method in which a lubricant is supplied to the friction surface under pressure. dip-feed lubrication 9.22
A lubrication method in which the friction surface is continuously or intermittently immersed in a lubricating oil pool. 9.23
splash lubrication
A lubrication method in which the lubricant is splashed onto the friction surface by moving parts. 13
GB/T 2889-94
9.24 drop-feed lubrication A lubrication method in which the lubricant is dripped onto the friction surface at regular intervals. 9.25 Ring lubrication A lubrication method that relies on a ring rotating with the shaft to bring the lubricant to the friction surface. Oil fog (mist) lubrication 9.26
A lubrication method that atomizes the lubricant and sends it to the friction surface. 9. 27
Pad lubrication
A lubrication method that relies on a wet oil pad with capillary action to absorb the lubricant to the friction surface through direct contact. 9.28 Wick lubrication A lubrication method that relies on an oil wick to send the lubricant to the friction surface. 9.29 Rotaprint lubrication
A lubrication method that presses a special lubricant against the moving surface so that the detached solid lubricant adheres to the friction surface. 9.30
Solid-film coating lubrication A lubrication method that applies a solid film to the friction surface. 10 Lubricants for sliding bearings and their properties
10.1 Lubricants
Lubricating substances added to the friction surface to reduce wear, surface damage and (or) friction. Liquid lubricants
Lubricants in liquid state.
Gaseous lubricants
Lubricants in gaseous state.
Grease
Stable semi-solid lubricants mainly made of mineral oil or synthetic oil mixed with soap or other thickeners. Solid lubricants
Lubricating oils
Oil-based liquid lubricants used to reduce friction and wear between the surfaces of two moving objects, composed of base oils and additives. Neutral oils
One of the base oils of lubricating oils, made from petroleum fractions after dewaxing and refining. Multigrade oil
Lubricating oil with little change in viscosity over a wide temperature range. 10.9
Mineral oil
A general term for a hydrocarbon mixture obtained by processing petroleum and other mineral raw materials. 10.10 Petroleum lubricant Lubricating oil obtained by refining crude oil by general methods. 10.11 Vegetable lubricant Lubricant made from vegetable oil
10.12 Animal lubricant Lubricant made from animal oil or animal fat. 10.13 Synthetic lubricant Lubricant synthesized by chemical methods.
10.14 Combined lubricant 146
Hydrostatic lubrication Liquid lubrication in which the friction surfaces are completely separated by liquid pressed into their gaps from the outside. 9.7
Aerodynamic lubrication Gas lubrication in which the friction surfaces are completely separated by pressure generated by the gas film between them. 9.8Aerostatic lubrication Gas lubrication in which the friction surfaces are completely separated by gas pressed into their gaps from the outside. 9.9Elasto-hydrodynamic lubrication Lubrication in which the friction between the friction surfaces and the thickness of the liquid lubricating film depend on the elastic properties of the material and the rheological properties of the lubricant. 9.10Boundary lubrication Lubrication in which the friction and wear between the friction surfaces depend on the properties of the surface material and the properties of the lubricant other than viscosity. Semi-liquid lubricationsemi-liquid lubrication9.11
Lubrication in which liquid lubrication is achieved on part of the friction surface. Extreme-pressure lubrication9.12
Lubrication in which the friction and wear between friction surfaces depend on the chemical reaction of the lubricant with the friction surface under heavy load and high temperature. 9.13
Thick-film lubricationLubrication in which the thickness of the lubricating film is much greater than the height of the micro-convexities on the working surface. Mixed-film lubrication9.14
Lubrication between liquid lubrication and boundary lubrication. 9.15
Method of lubricationMethod of supplying lubricant to the friction surface. Continuous lubricationContinuous lubricationA lubrication method in which lubricant is continuously supplied to the friction surface. Intermittent lubricationPeriodic lubricationA lubrication method in which lubricant is intermittently supplied to the friction surface. 9.18 Life-time lubricationA lubrication method in which lubricant is supplied only before the system is put into operation for the first time. 9.19
Circulating lubricationA lubrication method in which the lubricant is circulated through the friction surface by mechanical means. 9.20
Once-through lubricationA lubrication method in which lubricant is intermittently or continuously supplied to the friction surface without flowing back into the lubrication system. Force-feed lubrication9.21
A lubrication method in which lubricant is supplied to the friction surface under pressure. Dip-feed lubrication9.22
A lubrication method in which the friction surface is continuously or intermittently immersed in a lubricating oil pool. 9.23
Splash lubrication
A lubrication method in which the lubricant is splashed onto the friction surface by moving parts. 13
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9.24 Drop-feed lubricationA lubrication method in which the lubricant is dripped onto the friction surface at regular intervals. 9.25 Ring lubricationA lubrication method in which the lubricant is brought to the friction surface by a ring rotating with the shaft. Oil mist lubrication oil fog (mist) lubrication 9.26
A lubrication method that atomizes the lubricating oil and delivers it to the friction surface. 9. 27
Pad lubrication
A lubrication method that relies on a wet oil pad with capillary action to absorb the lubricating oil to the friction surface through direct contact. 9.28Wick lubrication A lubrication method that relies on a wick to deliver the lubricating oil to the friction surface. 9.29Rotaprint lubrication
A lubrication method that presses a special lubricant against the moving surface so that the detached solid lubricant adheres to the friction surface. 9.30
Solid-film coating lubrication A lubrication method that applies a solid film to the friction surface. 10 Lubricants for sliding bearings and their properties
10.1 Lubricants
Lubricating substances added to the friction surface to reduce wear, surface damage and (or) friction. Liquid lubricants
Lubricants in liquid state.
Gaseous lubricants
Lubricants in gaseous state.
Grease
Stable semi-solid lubricants mainly made of mineral oil or synthetic oil mixed with soap or other thickeners. Solid lubricants
Lubricating oils
Oil-based liquid lubricants used to reduce friction and wear between the surfaces of two moving objects, composed of base oils and additives. Neutral oils
One of the base oils of lubricating oils, made from petroleum fractions after dewaxing and refining. Multigrade oil
Lubricating oil with little change in viscosity over a wide temperature range. 10.9
Mineral oil
A general term for a hydrocarbon mixture obtained by processing petroleum and other mineral raw materials. 10.10 Petroleum lubricant Lubricating oil obtained by refining crude oil by general methods. 10.11 Vegetable lubricant Lubricant made from vegetable oil
10.12 Animal lubricant Lubricant made from animal oil or animal fat. 10.13 Synthetic lubricant Lubricant synthesized by chemical methods.
10.14 Combined lubricant 146
Hydrostatic lubrication Liquid lubrication in which the friction surfaces are completely separated by liquid pressed into their gaps from the outside. 9.7
Aerodynamic lubrication Gas lubrication in which the friction surfaces are completely separated by pressure generated by the gas film between them. 9.8Aerostatic lubrication Gas lubrication in which the friction surfaces are completely separated by gas pressed into their gaps from the outside. 9.9Elasto-hydrodynamic lubrication Lubrication in which the friction between the friction surfaces and the thickness of the liquid lubricating film depend on the elastic properties of the material and the rheological properties of the lubricant. 9.10Boundary lubrication Lubrication in which the friction and wear between the friction surfaces depend on the properties of the surface material and the properties of the lubricant other than viscosity. Semi-liquid lubricationsemi-liquid lubrication9.11
Lubrication in which liquid lubrication is achieved on part of the friction surface. Extreme-pressure lubrication9.12
Lubrication in which the friction and wear between friction surfaces depend on the chemical reaction of the lubricant with the friction surface under heavy load and high temperature. 9.13
Thick-film lubricationLubrication in which the thickness of the lubricating film is much greater than the height of the micro-convexities on the working surface. Mixed-film lubrication9.14
Lubrication between liquid lubrication and boundary lubrication. 9.15
Method of lubricationMethod of supplying lubricant to the friction surface. Continuous lubricationContinuous lubricationA lubrication method in which lubricant is continuously supplied to the friction surface. Intermittent lubricationPeriodic lubricationA lubrication method in which lubricant is intermittently supplied to the friction surface. 9.18 Life-time lubricationA lubrication method in which lubricant is supplied only before the system is put into operation for the first time. 9.19
Circulating lubricationA lubrication method in which the lubricant is circulated through the friction surface by mechanical means. 9.20
Once-through lubricationA lubrication method in which lubricant is intermittently or continuously supplied to the friction surface without flowing back into the lubrication system. Force-feed lubrication9.21
A lubrication method in which lubricant is supplied to the friction surface under pressure. Dip-feed lubrication9.22
A lubrication method in which the friction surface is continuously or intermittently immersed in a lubricating oil pool. 9.23
Splash lubrication
A lubrication method in which the lubricant is splashed onto the friction surface by moving parts. 13
GB/T 2889-94
9.24 Drop-feed lubricationA lubrication method in which the lubricant is dripped onto the friction surface at regular intervals. 9.25 Ring lubricationA lubrication method in which the lubricant is brought to the friction surface by a ring rotating with the shaft. Oil mist lubrication oil fog (mist) lubrication 9.26
A lubrication method that atomizes the lubricating oil and delivers it to the friction surface. 9. 27
Pad lubrication
A lubrication method that relies on a wet oil pad with capillary action to absorb the lubricating oil to the friction surface through direct contact. 9.28Wick lubrication A lubrication method that relies on a wick to deliver the lubricating oil to the friction surface. 9.29Rotaprint lubrication
A lubrication method that presses a special lubricant against the moving surface so that the detached solid lubricant adheres to the friction surface. 9.30
Solid-film coating lubrication A lubrication method that applies a solid film to the friction surface. 10 Lubricants for sliding bearings and their properties
10.1 Lubricants
Lubricating substances added to the friction surface to reduce wear, surface damage and (or) friction. Liquid lubricants
Lubricants in liquid state.
Gaseous lubricants
Lubricants in gaseous state.
Grease
Stable semi-solid lubricants mainly made of mineral oil or synthetic oil mixed with soap or other thickeners. Solid lubricants
Lubricating oils
Oil-based liquid lubricants used to reduce friction and wear between the surfaces of two moving objects, composed of base oils and additives. Neutral oils
One of the base oils of lubricating oils, made from petroleum fractions after dewaxing and refining. Multigrade oil
Lubricating oil with little change in viscosity over a wide temperature range. 10.9
Mineral oil
A general term for a hydrocarbon mixture obtained by processing petroleum and other mineral raw materials. 10.10 Petroleum lubricant Lubricating oil obtained by refining crude oil by general methods. 10.11 Vegetable lubricant Lubricant made from vegetable oil
10.12 Animal lubricant Lubricant made from animal oil or animal fat. 10.13 Synthetic lubricant Lubricant synthesized by chemical methods.
10.14 Combined lubricant 1420
Once-through lubricationA lubrication method in which lubricant is intermittently or continuously supplied to the friction surface without flowing back into the lubrication system. Force-feed lubrication9.21
A lubrication method in which lubricant is supplied to the friction surface under pressure. Dip-feed lubrication9.22
A lubrication method in which the friction surface is continuously or intermittently immersed in a lubricating oil pool. 9.23
Splash lubrication
A lubrication method in which the lubricant is splashed onto the friction surface by moving parts. 13
GB/T 2889-94
9.24 Drop-feed lubricationA lubrication method in which the lubricant is dripped onto the friction surface at regular intervals. 9.25 Ring lubricationA lubrication method in which the lubricant is brought to the friction surface by a ring rotating with the shaft. Oil mist lubrication oil fog (mist) lubrication 9.26
A lubrication method that atomizes the lubricating oil and delivers it to the friction surface. 9. 27
Pad lubrication
A lubrication method that relies on a wet oil pad with capillary action to absorb the lubricating oil to the friction surface through direct contact. 9.28Wick lubrication A lubrication method that relies on a wick to deliver the lubricating oil to the friction surface. 9.29Rotaprint lubrication
A lubrication method that presses a special lubricant against the moving surface so that the detached solid lubricant adheres to the friction surface. 9.30
Solid-film coating lubrication A lubrication method that applies a solid film to the friction surface. 10 Lubricants for sliding bearings and their properties
10.1 Lubricants
Lubricating substances added to the friction surface to reduce wear, surface damage and (or) friction. Liquid lubricants
Lubricants in liquid state.
Gaseous lubricants
Lubricants in gaseous state. bzxz.net
Grease
Stable semi-solid lubricants mainly made of mineral oil or synthetic oil mixed with soap or other thickeners. Solid lubricants
Lubricating oils
Oil-based liquid lubricants used to reduce friction and wear between the surfaces of two moving objects, composed of base oils and additives. Neutral oils
One of the base oils of lubricating oils, made from petroleum fractions after dewaxing and refining. Multigrade oil
Lubricating oil with little change in viscosity over a wide temperature range. 10.9
Mineral oil
A general term for a hydrocarbon mixture obtained by processing petroleum and other mineral raw materials. 10.10 Petroleum lubricant Lubricating oil obtained by refining crude oil by general methods. 10.11 Vegetable lubricant Lubricant made from vegetable oil
10.12 Animal lubricant Lubricant made from animal oil or animal fat. 10.13 Synthetic lubricant Lubricant synthesized by chemical methods.
10.14 Combined lubricant 1420
Once-through lubricationA lubrication method in which lubricant is intermittently or continuously supplied to the friction surface without flowing back into the lubrication system. Force-feed lubrication9.21
A lubrication method in which lubricant is supplied to the friction surface under pressure. Dip-feed lubrication9.22
A lubrication method in which the friction surface is continuously or intermittently immersed in a lubricating oil pool. 9.23
Splash lubrication
A lubrication method in which the lubricant is splashed onto the friction surface by moving parts. 13
GB/T 2889-94
9.24 Drop-feed lubricationA lubrication method in which the lubricant is dripped onto the friction surface at regular intervals. 9.25 Ring lubricationA lubrication method in which the lubricant is brought to the friction surface by a ring rotating with the shaft. Oil mist lubrication oil fog (mist) lubrication 9.26
A lubrication method that atomizes the lubricating oil and delivers it to the friction surface. 9. 27
Pad lubrication
A lubrication method that relies on a wet oil pad with capillary action to absorb the lubricating oil to the friction surface through direct contact. 9.28Wick lubrication A lubrication method that relies on a wick to deliver the lubricating oil to the friction surface. 9.29Rotaprint lubrication
A lubrication method that presses a special lubricant against the moving surface so that the detached solid lubricant adheres to the friction surface. 9.30
Solid-film coating lubrication A lubrication method that applies a solid film to the friction surface. 10 Lubricants for sliding bearings and their properties
10.1 Lubricants
Lubricating substances added to the friction surface to reduce wear, surface damage and (or) friction. Liquid lubricants
Lubricants in liquid state.
Gaseous lubricants
Lubricants in gaseous state.
Grease
Stable semi-solid lubricants mainly made of mineral oil or synthetic oil mixed with soap or other thickeners. Solid lubricants
Lubricating oils
Oil-based liquid lubricants used to reduce friction and wear between the surfaces of two moving objects, composed of base oils and additives. Neutral oils
One of the base oils of lubricating oils, made from petroleum fractions after dewaxing and refining. Multigrade oil
Lubricating oil with little change in viscosity over a wide temperature range. 10.9
Mineral oil
A general term for a hydrocarbon mixture obtained by processing petroleum and other mineral raw materials. 10.10 Petroleum lubricant Lubricating oil obtained by refining crude oil by general methods. 10.11 Vegetable lubricant Lubricant made from vegetable oil
10.12 Animal lubricant Lubricant made from animal oil or animal fat. 10.13 Synthetic lubricant Lubricant synthesized by chemical methods.
10.14 Combined lubricant 14
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