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rolling-element bearings

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300047
EISBN: 978-1-62708-323-2
... was experiencing vibration problems and the investigators declared that the vibration problems were coming from the very large roller thrust bearing that supported the upper portion of the machine. The problem was addressed by replacing the rolling element bearing with a lubricated steel on bronze thrust bearing...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300271
EISBN: 978-1-62708-323-2
... famous in the field of tribology by becoming the surviving ceramic for applications in rolling-element bearings. For decades, tribology researchers investigated all sorts of options to arrive at rolling-element bearings capable of operating in environments that are too harsh for conventional 52100 steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300199
EISBN: 978-1-62708-323-2
... of the Earth’s wonder bridges are suspension bridges held up by steel wire ropes. High compressive strength is needed to carry the significant Hertzian stresses encountered in rolling-element bearings. Some jet engine bearings are life tested at Hertz stress of 388,000 psi (2,600 MPa). Steels have been...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610461
EISBN: 978-1-62708-303-4
... in stationary joints that are “fixed” from shrinking or pressing by interference fits or by bolts, pins, rivets, or other mechanisms, and also at the various contact points in antifriction, or rolling element, bearings. This means that nonrotating antifriction bearings that are subject to vibration over...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630189
EISBN: 978-1-62708-270-9
... of hardened steel gears, rolling-element bearings, roller cams, and other parts or assemblies where there is a combination of rolling and sliding motion. The parts subject to wear fatigue failure generally have two convex, or counterformal, surfaces in contact under load. Typical components...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300013
EISBN: 978-1-62708-323-2
..., the balls will become completely separated from the raceways by the lubricant, and thus, wear becomes nil because the balls do not even touch the races. A well-designed electric motor with rolling element bearings can last 50 years or more. Rolling element bearings with proper lubrication at operating...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300079
EISBN: 978-1-62708-323-2
... Abstract This chapter covers common types of erosion, including droplet, slurry, cavitation, liquid impingement, gas flow, and solid particle erosion, and major types of wear, including abrasive, adhesive, lubricated, rolling, and impact wear. It also covers special cases such as galling...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.9781627083232
EISBN: 978-1-62708-323-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300121
EISBN: 978-1-62708-323-2
... on rotors and the like have to pass about 40 screening tests before they can be actually used in an engine. The bearings similarly are tested, but the oils must withstand bench tests at an elevated temperature and 10,000 rpm in a rolling element bearing with heavy contact stresses, near the compressive...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300227
EISBN: 978-1-62708-323-2
.... If an application requires rustfree rolling-element bearings, the rollers or balls and raceways are made from 440C. There should be no abrasion in rolling-element bearings, but open bearings can mean running with abrasive contaminants in the oil or grease. However, 440C may be used for tooling that handles abrasive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.9781627083157
EISBN: 978-1-62708-315-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350001
EISBN: 978-1-62708-315-7
...-element bearings, gears, cams, and similar power-transmission devices often wear by a mechanism of surface fatigue. Repeated point or line contact stresses can lead to subsurface cracks that eventually grow to produce surface pits and eventual failure of the device. Prevention is possible through the use...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630169
EISBN: 978-1-62708-270-9
..., or rolling-element, bearings. This means that nonrotating antifriction bearings that are subject to vibration over a period of time may have fretting wear wherever a ball or roller contacts a raceway under load. If the bearings subsequently rotate in normal service, they may be noisy because of the wear...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300391
EISBN: 978-1-62708-323-2
... approach. Most greased rolling-element bearing failures occur because of depletion of the grease or too much or too little grease at startup. Bearing inspections using thermal imaging can determine if a grease is wearing out. Bicycle chains may be the most difficult lubrication challenge that most...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.9781627082617
EISBN: 978-1-62708-261-7
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.9781627082709
EISBN: 978-1-62708-270-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.9781627082563
EISBN: 978-1-62708-256-3
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300421
EISBN: 978-1-62708-323-2
... using rolling-element bearings. If very high hardness and abrasion resistance are required, then the nitriding alloy steels such as Nitralloy 135 are candidates; they can have a 70 HRC case with significant depth. These steels are often used for injection molding screws, in which they resist abrasion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270197
EISBN: 978-1-62708-301-0
... with continued operation. Electrical pitting is produced by the passage of current between two surfaces. In applications such as electric motor, there is a possibility of the current passing through the bearings. When the current is broken at the contact surfaces between raceways and rolling elements, arcing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060175
EISBN: 978-1-62708-261-7
... Abstract This chapter describes the classification of steels and the various compositional categories of commercial steel products. It explains how different alloying elements affect the properties of carbon and low-alloys steels and discusses strength, toughness, and corrosion resistance...