ball bearings
Rolling machine elements
Ball bearings are small metal balls used to reduce friction between moving parts in machinery.
They sit between rotating components, allowing smooth motion with minimal resistance.
The singular ball bearing can refer to either an individual ball or the entire assembly containing them—the outer ring, inner ring, and balls together.
Ball bearings appear in everything from skateboards to industrial equipment.
Enclosed competition circuit
- cageBarred confinement structure
- retainerUpfront professional fee
- housingDwellings or protective covering
- sleeveGarment's arm portion
shield · seal · inner ring · outer ring · roller · separator · flange · adapter
Shaft for wheel rotation
- shaftNarrow vertical passage
- spindleRotating rod for thread
- hubCentral connection point
- loadCarried weight or burden
thrust · radial · clearance · tolerance · preload · deflection · torque · runout
Coating to reduce friction
- greaseThick oily lubricant
- oilSlippery viscous fluid
- resistanceCapacity to withstand force
- wearCarry on person
heat · drag · smoothness · abrasion · coefficient · viscosity · sliding · contact
Rapid rotation around axis
- rollList of names
- orbitCurved celestial path
- revolveTurn around center
- freewheelMove without propulsion
swivel · pivot · gyroscope · turntable · wheel · rotor · pulley · flywheel
Carbon-hardened iron alloy
- chromeReflective metal coating
- ceramicFired clay material
- stainlessFree from discoloration
- titaniumElement twenty-two
brass · nylon · PTFE · zirconia · hardened · tempered · corrosion-resistant · hybrid
Willingness to accept difference
- micrometerMillionth of a meter
- calibrationAdjusting for measurement accuracy
- gaugeStandard of measurement
- alignmentCorrect relative positioning
measurement · metrology · grade · runout · sphericity · quality control · inspection
Wheeled board for riding
- bicyclePedal-powered two-wheeler
- motorEnergy-to-motion converter
- turbineBlade-driven energy converter
- conveyorMechanism that transports items
gearbox · transmission · power tool · fan · pump · compressor · drill · router
raceway
Enclosed competition circuit
- cageBarred confinement structure
- retainerUpfront professional fee
- housingDwellings or protective covering
sleeve · shield · seal · inner ring · outer ring · roller · separator · flange · adapter · snap ring
axle
Shaft for wheel rotation
load · thrust · radial · clearance · tolerance · preload · deflection · torque · runout · play
lubrication
Coating to reduce friction
- greaseThick oily lubricant
- oilSlippery viscous fluid
- resistanceCapacity to withstand force
wear · heat · drag · smoothness · abrasion · coefficient · viscosity · sliding · contact · seizing
spin
Rapid rotation around axis
freewheel · swivel · pivot · gyroscope · turntable · wheel · rotor · pulley · flywheel · sprocket
steel
Carbon-hardened iron alloy
titanium · brass · nylon · PTFE · zirconia · hardened · tempered · corrosion-resistant · hybrid · carbon
tolerance
Willingness to accept difference
- micrometerMillionth of a meter
- calibrationAdjusting for measurement accuracy
- gaugeStandard of measurement
alignment · measurement · metrology · grade · runout · sphericity · quality control · inspection
skateboard
Wheeled board for riding
conveyor · gearbox · transmission · power tool · fan · pump · compressor · drill · router · washing machine
- bike wheelswheel, rim, tire, spoke, hub
- fishing tacklefishing rod, fishing rods, spinning rod, fly rod, fishing line
- Granular Materialssand grains, gravel, pebbles, silt, grit
- bearings
- fishing reelsspinning reel, baitcasting reel, baitcaster, fly reel, casting reel
- dual-usecentrifuges, nuclear materials, guidance systems, biological agents, pathogens