ball bearing
Rolling machine element
A ball bearing is a mechanical device that reduces friction between moving parts by using small metal balls held between two rings.
The balls roll rather than slide, allowing smooth rotation with minimal resistance.
Ball bearings appear in wheels, motors, skateboards, and countless rotating mechanisms.
A single steel ball from such a device is also called a ball bearing.
Enclosed competition circuit
- cageBarred confinement structure
- retainerUpfront professional fee
- shieldHandheld defensive armor
- sealAuthentication stamp or mark
groove · inner ring · outer ring · separator · housing · shaft · sleeve · flange
Carbon-hardened iron alloy
- ceramicFired clay material
- chromeReflective metal coating
- stainlessFree from discoloration
- hardnessResistance to penetration
corrosion-resistant · spherical · grade · finish · tolerance · dimension · diameter · clearance
Turning on an axis
- spinRapid rotation around axis
- rollList of names
- pivotPoint of rotation
- swivelRotating connection point
smooth · load · thrust · speed · torque · support · alignment
Wheeled board for riding
- wheelRotating circular frame
- motorEnergy-to-motion converter
- spindleRotating rod for thread
- gearboxEnclosed system of cogs
turbine · conveyor · pulley · automotive · industrial · aerospace · dental drill · computer fan
Willingness to accept difference
- gradeClassification by rank
- accuracyDegree of correctness
- runoutComplete depletion of supply
- micrometerMillionth of a meter
gauge · calibration · measurement · dimensional · specification · quality control · class · ISO
Thick oily lubricant
- oilSlippery viscous fluid
- lubricantFriction-reducing substance
- viscosityFluid's flow resistance
- filmMovie or coating
boundary · hydrodynamic · synthetic · mineral · sealed · shielded · maintenance · relubrication
Carry on person
- fatigueWeariness from prolonged exertion
- spallingSurface material fragmenting off
- pittingForming small cavities
- corrosionChemical wearing away
contamination · misalignment · overload · flaking · noise · vibration · seizure · degradation
raceway
Enclosed competition circuit
seal · groove · inner ring · outer ring · separator · housing · shaft · sleeve · flange · snap ring
steel
Carbon-hardened iron alloy
hardness · corrosion-resistant · spherical · grade · finish · tolerance · dimension · diameter · clearance · radial
rotation
Turning on an axis
swivel · smooth · load · thrust · speed · torque · support · alignment
skateboard
Wheeled board for riding
gearbox · turbine · conveyor · pulley · automotive · industrial · aerospace · dental drill · computer fan · fidget spinner
tolerance
Willingness to accept difference
micrometer · gauge · calibration · measurement · dimensional · specification · quality control · class · ISO · metrology
grease
Thick oily lubricant
film · boundary · hydrodynamic · synthetic · mineral · sealed · shielded · maintenance · relubrication · contamination
wear
Carry on person
- fatigueWeariness from prolonged exertion
- spallingSurface material fragmenting off
- pittingForming small cavities
corrosion · contamination · misalignment · overload · flaking · noise · vibration · seizure · degradation · overheating
- steel thingsstainless steel, carbon steel, rebar, I-beam, girder
- rolling thingswheel spin, log roll, dice roll, barrel roll, bowling
- bike wheelswheel, rim, tire, spoke, hub
- machine partsgear, gears, cog, cogs, bolt
- mechanismsgear, gearbox, gear train, cog, pulleys
- Nordic InnovationsBluetooth, dynamite, Spotify, IKEA, Volvo