1A bearing in which the parts are separated by a ring of small freely rotating metal balls which reduce friction.
‘Typical coefficient of friction for a ball bearing is about mu = 1.5e - 3’
‘The following week, I almost dropped a large metal ball bearing onto it, which would have shattered it.’
‘Daytona uses bushings instead of the ball bearing pivots of the upper-tier Campagnolo shifters, which allow for lighter control feel.’
‘For twice the price of the cheap metal wheel, they had a plastic model with a ball bearing.’
‘The ball bearing increases the thrust load capacity of the turbo.’
‘The bolt design uses a ball bearing detent for the firing pin assembly.’
‘Within the top of the device is a ball bearing which sits on a piece of metal with a tiny hole in it.’
‘‘What we did to the atom is something like lubricating a ball bearing so that less force is required to move it,’ says Joseph Stroscio, co-author of the Science paper.’
‘The problem was a ball bearing at Indianapolis; Johnson admits he missed a gear at Watkins Glen, which did irreparable damage to the transmission, and a valve spring broke at Michigan.’
‘The single ball bearing / sleeve bearing fan rated at 5500 rpm, give or take 10%, and can provide 10.6 CFM of airflow.’
‘Swivels should be of the very best quality, and the Sampo ball bearing swivel in the 500 lb breaking strain size is perhaps the best that is readily available.’
‘Previous to my last trip to Germany, I'd become familiar with a strange phenomenon involving a magnetized ball bearing and a piece of copper or aluminum tubing.’
‘Who knows, maybe Rondeau will turn out to be as sharp as a ball bearing.’
‘Like its brother, a ball bearing is used inside the fan, and the same accessory pack is included.’
‘The good news is that the fan uses a ball bearing instead of a sleeve bearing.’
‘The advantage of these is that in a ball bearing the contact areas are quite small.’
‘Two ball bearing units are used instead of bushings to provide German-precision, short-throw shifting action.’
‘I used to have the old Goofy Foot, with the ball bearing wheels.’
‘Most recently, it shut down in March after a ball bearing at its base failed.’
‘The metal-to-metal contact in a ball bearing motor produces vibration and noise, and is less forgiving of shock loads.’
1.1A metal ball used in a ball bearing.
‘She ricocheted down the street like a ball bearing in a pinball machine, feeling tiny and insignificant among the large and imposing aliens - a feeling she had never felt before, being a princess on her home planet.’
‘If you shake the can, the rattling ball bearing helps to mix up the propellant and the product, so the product is pushed out in a fine mist.’
‘I have never been able to significantly magnetize a ball bearing, so I'd guess that they are usually made of a rather ‘soft’ (low carbon) steel.’
‘Because candy or iron are the traditional presents for a couple's sixth anniversary, Diesel sent out the invitation in a test tube with a ball bearing and a jawbreaker.’
‘So in theory, an atom dropped down the exact centre of a vertical metal pipe should reach a terminal velocity as it ploughs through the viscous quantum vacuum, just like a ball bearing dropped into oil.’
‘The trigger is like a ball bearing on glass - rolling smooth.’
‘Upon closer examination, he saw a flying ball bearing or silver sphere.’
‘The action proved smoother than a greased ball bearing on ice with perfect feed and ejection.’
‘Loosening up, she moves on to the pool, coasting like a ball bearing around its high rims, grabbing a little air when the fancy strikes her.’
‘A ball bearing placed inside falls and triggers the cartridge if it is disturbed.’
‘It left a 9.5mm ball bearing, possibly fired by a catapult or gas-powered gun, embedded under 16-year-old Nathan Gould's right eye.’
‘‘The cat had an operation involving the removal of an eyeball because there was a ball bearing inside the eye socket,’ said Mr Thomas.’
‘Once you put a coin in, and pulled the lever, a ball bearing would hurtle around some sort of track, and depending where it ended up, determined what sort of prize, if any, you won.’
‘In one recent case in Merseyside a man was left paralysed after being shot in the spine by a ball bearing from a BB gun.’
‘Police confirmed that a ball bearing, or BB, gun had been discharged inside the store.’
‘A cyclist was fired at in a ball bearing gun drive-by shooting in Colchester.’
‘One boy has been charged with assault after a Warneford School caretaker was shot in the back with a ball bearing gun.’
‘Officers also found a ball bearing gun while searching a vehicle at a police checkpoint in Regent's Park yesterday evening.’
‘He said: ‘All I know is that police believe it was a ball bearing gun that was used, not a real gun.’’
‘A man later gave himself up to police, who recovered a ball bearing gun.’
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