Subscribe to RSS
UnitedStates Germany Russia India Turkey SouthAfrica England Netherlands Philippines Belgium Australia Brazil Spain China Kore

Development of “Multi Layer BEARPHITE”

[World first! Double-molding method used for oil-impregnated sintered bearings with high-strength and outstanding wear-resistance]

NTN Corporation (hereafter, NTN) has developed the “Multi Layer BEARPHITE” that offers high strength and outstanding wear-resistance using a newly developed sintering molding method.

Oil-impregnated sintered bearings are widely used as sliding bearings under light-load conditions such as small motors, however have been used in parts requiring high-loads, such as the joints of construction machinery. Bearings for high-load applications require steel materials with excellent wear-resistance machined with special heat treatment such as carburization for increased strength, followed by a cutting process for the inner diameter surface. Compared to bearings for light-load applications that are manufactured using only a pressing process, the additional work processes required for bearings for high-load applications has long presented a challenge.

The newly developed “Multi Layer BEARPHITE” is an oil-impregnated sintered bearing that features the internal layers of the bearing made of a material with a high-strength and outstanding wear-resistance, and the outer layers made of a high-strength structural material, in what is the world’s first double-molding method*1. The use of high-strength structural material for the outer layers of the bearing eliminate the need for special heat treatment, and greater dimensional precision with the sizing*2 process using a press means conventional cutting process is no longer required.

NTN has already started to propose the developed product to construction machinery manufacturers, and will soon start releasing the new bearing globally. The double-molding technology developed for this product will be applied to gears and other sintered machinery parts in addition to oil-impregnated sintered bearings, with plans for a greater level of use in industrial machinery and automotive markets.

*1 Double-molding method : a molding process that casts two dissimilar materials to form a single object.
*2 Sizing : a process that machines inner and outer diameter dimensions to the required precision using a shaped press.

[ Features ]
The double-molding method, which is used to cast two dissimilar materials into a single object, has been used for high-strength and outstanding wear-resistance
(1) Radial crushing strength of 500MPa or more, oil content of 17 vol% or more
? Optimized material and sintering conditions for the required strength and oil content without any special heat treatment
(2) Variation in inner and outer diameter dimensional precision of 50 ?m or less
? Sizing process used to maintain precision, eliminating the need for the cutting process
(values for (1) and (2) above obtained from test results of a bearing with dimensions?35×?45×35)

[ Product Photo ]

NTN bearphite 1

[ Structure ]

NTN bearphite 2

[ Example of applications ] Joints of hydraulic excavators

NTN bearphite 3

source: NTN Corporation

 

 

0 commentsback to post

banner

Add your comment

Nickname:
E-mail:
Website:
Comment:

*

Other articlesgo to homepage

Onderhoudsvrije lagers van Federal-Mogul ondersteunen één van ‘s werelds langste hangbruggen

Onderhoudsvrije lagers van Federal-Mogul ondersteunen één van ‘s werelds langste hangbruggen(0)

Federal-Mogul Corporation heeft onderhoudsvrije lagers voor een van ‘s werelds langste hangbruggen ontwikkeld. Na voltooiing later dit jaar zal de Hardanger Fjord Bridge in het zuidwesten van Noorwegen als een van de grootste in de wereld, verspreid over 1.310 meter (4297 ft) tussen pylonen in dienst worden genomen. Er zullen in totaal 128 gewrichtslagers, ontwikkeld

SKF introduceert een online netwerk ontwikkeld om het onderhoud problemen op te lossen

SKF introduceert een online netwerk ontwikkeld om het onderhoud problemen op te lossen(0)

SKF lanceert de SKF Maintenance Network, een website die onderhoudsprofessionals in staat stelt om contact te maken met andere onderhouds-experts en hun feedback te krijgen op specifieke problemen en mogelijke oplossingen te vinden. De SKF Maintenance Network is een unieke, leuke en lonende manier om problemen op te lossen. Klik op de bron om de

NSK ontwikkelt een lange levensduur afgedichte sferische tonlager met verbeterde slijtvastheid voor zwaar industriële toepassingen

NSK ontwikkelt een lange levensduur afgedichte sferische tonlager met verbeterde slijtvastheid voor zwaar industriële toepassingen(0)

NSK heeft aangekondigd dat het een lange levensduur afgedichte sferische tonlager met verbeterde anti-slijtage kenmerken voor toepassing in zware industrieën zoals mijnbouw, ijzer-en staalindustrie en non-ferro metalen industrie ontwikkeld. De verbeterde levensduur van dit product biedt klanten stabielere en lagere onderhoudskosten. Klik op de bron om de details te lezen. source: BearingNews

Trelleborg launched e-learning modules on sealing technology

Trelleborg launched e-learning modules on sealing technology(0)

Trelleborg Sealing Solutions is launch e-learning modules on sealing technology. Covering major sealing product areas, our aim through the e-learning modules is to answer questions most commonly asked by design engineers when facing sealing challenges. The know-how in the upcoming learning modules is not only targeted at design engineers at equipment manufacturers, but will also

NSK Develops a High Load Capacity Cylindrical Roller Bearing for Large Gearboxes

NSK Develops a High Load Capacity Cylindrical Roller Bearing for Large Gearboxes(0)

Improved Reliability for Large Gearbox Applications Such as Wind Power Generators NSK Ltd. (NSK; Headquarters: Tokyo, Japan; President and CEO: Norio Otsuka) announced that it has developed a high load capacity cylindrical roller bearing for large gearbox applications that achieves longer life thanks to an increase in load capacity over the conventional product. NSK is

read more

Contacts and information

Social networks

Most popular categories

Legal Notice

© 2012 BEARING NEWS All rights reserved.