129 relations: Accelerometer, Accuracy and precision, Aerospace bearing, Agostino Ramelli, Air bearing, Aliasing (computing), ASME, Axle, Babbitt (alloy), Ball bearing, Ball spline, Bearing surface, Bending moment, Bronze, Carmarthen, Ceramic, Composite bearing, Contact mechanics, Coordinate-measuring machine, Crusher, Cyclostationary process, Cylinder block, Cylinder head, Demodulation, Diagnosis, Djehutihotep, Drill, Eddy current, Electromagnet, Envelope, False brinelling, Fast Fourier transform, Fault (power engineering), Ferrite bead, Flexure bearing, Fluid bearing, Friction, Friedrich Fischer, Fundamental frequency, Galileo Galilei, Glass, Grease (lubricant), Grease fitting, Grease gun (tool), Hand pump, Harmonic, Henry Timken, High tech, Hinge, Horology, ..., Industrial Revolution, Internal combustion engine, Ironmaster, Italy, James Moore (cyclist), Jewel bearing, John Harrison, Jules Suriray, Lake Nemi, Leonardo da Vinci, Lignum vitae, Line (geometry), List of railroad truck parts, Lubricant, Lubrication, Machine Design, Machine element, Machine tool, Magnetic bearing, Magnetic field, Main bearing, Maintenance (technical), Moving parts, Needle roller bearing, Nemi ships, Newton (unit), Normal distribution, Normal force, Numerical control, Nylon, Oil can, Oiler (occupation), Oscillation, Paris–Rouen (cycle race), Patent, Paywall, Philip Vaughan, Pillow block bearing, Pitch bearing, Plain bearing, Polyoxymethylene, Polytetrafluoroethylene, Power inverter, Programmable logic controller, Race (bearing), Radius, Resonance, Rolamite, Rolling-element bearing, Roman Republic, Rotation around a fixed axis, Sapphire, Schaeffler Group, Scrollerwheel, Seal (mechanical), Shaft (mechanical engineering), Shaft voltage, Shock Pulse Method, SKF, Slewing bearing, Spectrum, Spherical bearing, Spherical roller bearing, Spiral groove bearing, Steel, Stiction, Stiffness, Surface roughness, Sven Gustaf Wingqvist, Thrust bearing, Trunk (botany), Ultra-high-molecular-weight polyethylene, United Kingdom, Vector (mathematics and physics), Waveform, Wheel, Wheel and axle, Wire race bearing, Wood. Expand index (79 more) » « Shrink index
An accelerometer is a device that measures proper acceleration.
Precision is a description of random errors, a measure of statistical variability.
Aerospace bearings are the bearings installed in aircraft and aerospace systems including commercial, private, military, or space applications.
Agostino Ramelli (1531–ca. 1610) was an Italian engineer best known for writing and illustrating the book of engineering designs Le diverse et artificiose machine del Capitano Agostino Ramelli, which contains, among others, his design for the bookwheel.
Air bearings (also known as aerostatic or aerodynamic bearings) are bearings that use a thin film of pressurized gas to provide a low friction load-bearing interface between surfaces.
In computing, aliasing describes a situation in which a data location in memory can be accessed through different symbolic names in the program.
The American Society of Mechanical Engineers (ASME) is a professional association that, in its own words, "promotes the art, science, and practice of multidisciplinary engineering and allied sciences around the globe" via "continuing education, training and professional development, codes and standards, research, conferences and publications, government relations, and other forms of outreach." ASME is thus an engineering society, a standards organization, a research and development organization, a lobbying organization, a provider of training and education, and a nonprofit organization.
An axle is a central shaft for a rotating wheel or gear.
Babbitt, also called Babbitt metal or bearing metal, is any of several alloys used for the bearing surface in a plain bearing.
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races.
Ball splines (Ball Spline bearings) are a special type of linear motion bearing that are used to provide nearly frictionless linear motion while allowing the member to transmit torque simultaneously.
A bearing surface is a mechanical engineering term that refers to the area of contact between two objects.
A bending moment is the reaction induced in a structural element when an external force or moment is applied to the element causing the element to bend.
Bronze is an alloy consisting primarily of copper, commonly with about 12% tin and often with the addition of other metals (such as aluminium, manganese, nickel or zinc) and sometimes non-metals or metalloids such as arsenic, phosphorus or silicon.
Carmarthen (Caerfyrddin, "Merlin's fort") is the county town of Carmarthenshire in Wales.
A ceramic is a non-metallic solid material comprising an inorganic compound of metal, non-metal or metalloid atoms primarily held in ionic and covalent bonds.
A composite bearing is used to maintain separation and control friction between two moving parts.
Contact mechanics is the study of the deformation of solids that touch each other at one or more points.
A coordinate measuring machine (CMM) is a device that measures the geometry of physical objects by sensing discrete points on the surface of the object with a probe.
A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust.
A cyclostationary process is a signal having statistical properties that vary cyclically with time.
The cylinder block is an integrated structure comprising the cylinder(s) of a reciprocating engine and often some or all of their associated surrounding structures (coolant passages, intake and exhaust passages and ports, and crankcase).
In an internal combustion engine, the cylinder head (often informally abbreviated to just head) sits above the cylinders on top of the cylinder block.
Demodulation is extracting the original information-bearing signal from a carrier wave.
Diagnosis is the identification of the nature and cause of a certain phenomenon.
Djehutihotep ("Thoth is satisfied") was an ancient Egyptian nomarch of the fifteenth nomos of Upper Egypt ("the Hare") during the twelfth dynasty, c. 1900 BC.
A drill is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for boring holes in various materials or fastening various materials together.
Eddy currents (also called Foucault currents) are loops of electrical current induced within conductors by a changing magnetic field in the conductor due to Faraday's law of induction.
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.
An envelope is a common packaging item, usually made of thin flat material.
False brinelling is a bearing damage caused by fretting, with or without corrosion, that causes imprints that look similar to brinelling, but are caused by a different mechanism.
A fast Fourier transform (FFT) is an algorithm that samples a signal over a period of time (or space) and divides it into its frequency components.
In an electric power system, a fault or fault current is any abnormal electric current.
A ferrite bead or ferrite choke is a passive electric component that suppresses high frequency noise in electronic circuits.
A flexure bearing is a category of flexure which is engineered to be compliant in one or more angular degrees of freedom.
Fluid bearings are bearings in which the load is supported by a thin layer of rapidly moving pressurized liquid or gas between the bearing surfaces.
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
Friedrich Fischer (March 19, 1849 – October 2, 1899) from Schweinfurt, Germany is considered the father of the modern ball bearing, having invented the process for milling standard bearings in 1883.
The fundamental frequency, often referred to simply as the fundamental, is defined as the lowest frequency of a periodic waveform.
Galileo Galilei (15 February 1564Drake (1978, p. 1). The date of Galileo's birth is given according to the Julian calendar, which was then in force throughout Christendom. In 1582 it was replaced in Italy and several other Catholic countries with the Gregorian calendar. Unless otherwise indicated, dates in this article are given according to the Gregorian calendar. – 8 January 1642) was an Italian polymath.
Glass is a non-crystalline amorphous solid that is often transparent and has widespread practical, technological, and decorative usage in, for example, window panes, tableware, and optoelectronics.
Grease is a semisolid lubricant.
bearing A grease fitting, grease nipple, Zerk fitting, or Alemite fitting is a metal fitting used in mechanical systems to feed lubricants, usually lubricating grease, into a bearing under moderate to high pressure using a grease gun.
A grease gun is a common workshop and garage tool used for lubrication.
Hand pumps are manually operated pumps; they use human power and mechanical advantage to move fluids or air from one place to another.
A harmonic is any member of the harmonic series, a divergent infinite series.
Henry Timken (August 16, 1831 in Bremen, Germany – March 16, 1909 in San Diego, California) was an inventor who founded the Timken Roller Bearing Company, later called the Timken Company.
High technology, often abbreviated to high tech (adjective forms high-technology, high-tech or hi-tech) is technology that is at the cutting edge: the most advanced technology available.
A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them.
Horology ("the study of time", related to Latin horologium from Greek ὡρολόγιον, "instrument for telling the hour", from ὥρα hṓra "hour; time" and -o- interfix and suffix -logy) is the study of the measurement of time.
The Industrial Revolution was the transition to new manufacturing processes in the period from about 1760 to sometime between 1820 and 1840.
An internal combustion engine (ICE) is a heat engine where the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit.
An ironmaster is the manager, and usually owner, of a forge or blast furnace for the processing of iron.
Italy (Italia), officially the Italian Republic (Repubblica Italiana), is a sovereign state in Europe.
James Moore (14 January 1849 – 17 July 1935) was an English bicycle racer.
A jewel bearing is a plain bearing in which a metal spindle turns in a jewel-lined pivot hole.
John Harrison (– 24 March 1776) was a self-educated English carpenter and clockmaker who invented a marine chronometer, a long-sought-after device for solving the problem of calculating longitude while at sea.
Jules Pierre Suriray was a Parisian bicycle mechanic, who patented, in 1869, the use of ball bearings in bicycles.
Lake Nemi (Lago di Nemi, Nemorensis Lacus, also called Diana's Mirror, Speculum Dianae) is a small circular volcanic lake in the Lazio region of Italy south of Rome, taking its name from Nemi, the largest town in the area, that overlooks it from a height.
Leonardo di ser Piero da Vinci (15 April 14522 May 1519), more commonly Leonardo da Vinci or simply Leonardo, was an Italian polymath of the Renaissance, whose areas of interest included invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography.
Lignum vitae is a wood, also called guayacan or guaiacum, and in parts of Europe known as pockholz, from trees of the genus Guaiacum.
The notion of line or straight line was introduced by ancient mathematicians to represent straight objects (i.e., having no curvature) with negligible width and depth.
A bogie or railroad truck holds the wheel sets of a rail vehicle.
A lubricant is a substance, usually organic, introduced to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move.
Lubrication is the process or technique of using a lubricant to reduce friction and/or wear in a contact between two surfaces.
Machine Design is an American trade magazine and Web site serving the OEM engineering market.
Machine element refers to an elementary component of a machine.
A machine tool is a machine for shaping or machining metal or other rigid materials, usually by cutting, boring, grinding, shearing, or other forms of deformation.
A magnetic bearing is a type of bearing that supports a load using magnetic levitation.
A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.
In a piston engine, the main bearings are the bearings on which the crankshaft rotates, usually plain or journal bearings.
The technical meaning of maintenance involves operational and functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure, and supporting utilities in industrial, business, governmental, and residential installations.
The moving parts of a machine are those parts of it that move.
A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles.
The Nemi Ships were two ships, one ship larger than the other, built by the Roman emperor Caligula in the 1st century AD at Lake Nemi.
The newton (symbol: N) is the International System of Units (SI) derived unit of force.
In probability theory, the normal (or Gaussian or Gauss or Laplace–Gauss) distribution is a very common continuous probability distribution.
In mechanics, the normal force F_n\ is that component of the contact force that is perpendicular to the surface that an object contacts.
Computer numerical control (CNC) is the automation of machine tools by means of computers executing pre-programmed sequences of machine control commands.
Nylon is a generic designation for a family of synthetic polymers, based on aliphatic or semi-aromatic polyamides.
An oil can (oilcan or oiler), Chas.
An oiler (also known as a "greaser") is a worker whose main job is to oil machinery.
Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states.
Paris–Rouen was the first cycle race covering a distance between two cities.
A patent is a set of exclusive rights granted by a sovereign state or intergovernmental organization to an inventor or assignee for a limited period of time in exchange for detailed public disclosure of an invention.
A paywall is a method of restricting access to content via a paid subscription.
Philip Vaughan was a Welsh inventor and ironmaster who patented the first design for a ball bearing in 1794.
A pillow block is a pedestal used to provide support for a rotating shaft with the help of compatible bearings & various accessories.
The pitch bearing, also named blade bearing, is a component of modern wind turbines which connect the rotor hub and the rotor blade.
A plain bearing, or more commonly sliding bearing and slide bearing (in railroading sometimes called a solid bearing or friction bearing), is the simplest type of bearing, comprising just a bearing surface and no rolling elements.
Polyoxymethylene (POM), also known as acetal, polyacetal, and polyformaldehyde, is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and excellent dimensional stability.
Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications.
A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC).
A programmable logic controller (PLC), or programmable controller is an industrial digital computer which has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, or robotic devices, or any activity that requires high reliability control and ease of programming and process fault diagnosis.
The rolling-elements of a rolling-element bearing ride on races.
In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.
In physics, resonance is a phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at specific frequencies.
Rolamite is a technology for very low friction bearings developed by Sandia National Laboratories in the 1960s.
A rolling-element bearing, also known as a rolling bearing, is a bearing which carries a load by placing rolling elements (such as balls or rollers) between two bearing rings called races.
The Roman Republic (Res publica Romana) was the era of classical Roman civilization beginning with the overthrow of the Roman Kingdom, traditionally dated to 509 BC, and ending in 27 BC with the establishment of the Roman Empire.
Rotation around a fixed axis or about a fixed axis of revolution or motion with respect to a fixed axis of rotation is a special case of rotational motion.
Sapphire is a precious gemstone, a variety of the mineral corundum, an aluminium oxide.
Schaeffler Technologies AG & Co.
A scrollerwheel is a mechanical device composed of a number of rollers (four or more) and connective bands under tension, which wrap around and weave between the rollers forming a self-supporting cluster possessing a central roller.
A mechanical seal is a device that helps join systems or mechanisms together by preventing leakage (e.g. in a plumbing system), containing pressure, or excluding contamination.
A shaft is a rotating machine element, usually circular in cross section, which is used to transmit power from one part to another, or from a machine which produces power to a machine which absorbs power.
Shaft voltage occurs in electric motors and generators due to leakage, induction, or capacitive coupling with the windings of the motor.
Shock Pulse Method, also known as SPM, is a patented technique for using signals from rotating rolling bearings as the basis for efficient condition monitoring of machines.
AB SKF (Swedish: Swedish ball bearing factory AB), later AB SKF, is a leading bearing and seal manufacturing company founded in Gothenburg, Sweden, in 1907.
A slewing bearing or slew ring is a rotational rolling-element bearing that typically supports a heavy but slow-turning or slow-oscillating load, often a horizontal platform such as a conventional crane, a swing yarder, or the wind-facing platform of a horizontal-axis windmill.
A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum.
A spherical plain bearing is a bearing that permits angular rotation about a central point in two orthogonal directions (usually within a specified angular limit based on the bearing geometry).
A spherical roller bearing is a rolling-element bearing that permits rotation with low friction, and permits angular misalignment.
Spiral groove bearings (journal and thrust) are self-acting, or hydrodynamic bearings used to reduce friction and wear without the use of pressurized lubricants.
Steel is an alloy of iron and carbon and other elements.
Stiction is the static friction that needs to be overcome to enable relative motion of stationary objects in contact.
Stiffness is the rigidity of an object — the extent to which it resists deformation in response to an applied force.
Surface roughness often shortened to roughness, is a component of surface texture.
Sven Gustaf Wingqvist (10 December 1876 – 17 April 1953) was a Swedish engineer, inventor and industrialist, and one of the founders of Svenska Kullagerfabriken (SKF), one of the world's leading ball bearing and roller bearing makers.
A thrust bearing is a particular type of rotary bearing.
In botany, the trunk (or bole) is the stem and main wooden axis of a tree, which is an important feature in tree identification, and which often differs markedly from the bottom of the trunk to the top, depending on the species.
Ultra-high-molecular-weight polyethylene (UHMWPE, UHMW) is a subset of the thermoplastic polyethylene.
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain,Usage is mixed with some organisations, including the and preferring to use Britain as shorthand for Great Britain is a sovereign country in western Europe.
When used without any further description, vector usually refers either to.
A waveform is the shape and form of a signal such as a wave moving in a physical medium or an abstract representation.
A wheel is a circular component that is intended to rotate on an axle bearing.
The wheel and axle are one of six simple machines identified by Renaissance scientists drawing from Greek texts on technology.
A wire race bearing is a rolling-element bearing, where the balls or rollers run on races resembling loops of wire.
Wood is a porous and fibrous structural tissue found in the stems and roots of trees and other woody plants.