Nsk Corporation

Nippon Seiko Kabushiki Kaisha

Other

Sanyo Special Steel Co., Ltd.

Nippon Seiko K.k.

Canon Kabushiki Kaisha

Hitachi Communication Technologies, Ltd.

Canon Tokki Corporation

Yasuo Murakami

Hiromichi Takemura

Nobuaki Mitamura

Kazuo Sekino

Kyozaburo Furumura

Tomonobu Yoshikawa

Shigeru Okita

Youichi Matsumoto

Seiji Sato

Hiroshi Iwasa

Akihiro Kiuchi

Shinichi Shirota

Takashi Imanishi

Susumu Tanaka

Nobuo Goto

Yoshitaka Hayashi

Satoshi Kadokawa

Yoichi Matsumoto

Hiromi Sugi

Shinji Fujita

Hiromitsu Asai

Yasuo Utsumi

Youichi Matumoto

Tsutomu Abe

Hiroshi Suzuki

Hiroyuki Itoh

Hiroaki Miyata

Toru Sato

Shoji Noguchi

Hiroaki Nakazawa

Moichi Chiba

Mitsuhiro Wada

Mitsuru Nakamura

Yukitaka Murakami

Koichi Hachiya

Hiroshi Narai

Seigou Urakami

Noriyuki Sueyoshi

Tomoki Muraoka

Ryoji Hayashi

Toshiharu Honda

Kenji Takei

Takaaki Shiratani

Shuhei Kitano

Hiroyuki Uchida

Soji Nishida

Kaneaki Hamada

Kazuhiro Hoshino

Yasuyuki Shimazaki

Daiju Takahashi

Kazuhiko Hiraoka

Takashi Takemi

Takanobu Satou

Kazuhiro Uemura

Ryurou Kurahashi

Satoshi Nakamura

Shinjiro Ishii

Yasuyuki Shimasaki

Tomohiro Kumaki

Toichi Kondou

Toshiyuki Yamamoto

A film deposition apparatus comprises: a vacuum chamber; a cylindrical target, a circumferential surface of the target being opposite to a substrate, and the target being disposed in the vacuum chamber so as to intersect a conveyance direction of the substrate; a driving unit configured to rotatively drive the target; a magnetic field creator disposed inside the target; a reactive gas flow unit configured to flow a reactive gas, the reactive gas flow unit being disposed in the vicinity of the target; an optical emission monitor configured to monitor an optical emission intensity of plasma at a location between the substrate and the target and in the vicinity of the target; and a controlling unit configured to control a rotation speed of the target driven by the driving unit, such that the optical emission intensity monitored by the optical emission monitor approaches a preset target optical emission intensity.

Film deposition apparatus and film deposition method

A rolling device in which damage such as seizure or wear is less liable to occur and which has a long life, even when used under severe conditions such as high speed, heavy load, high temperature and insufficient lubrication. A thrust needle roller bearing includes an inner ring, outer ring, and a plurality of rolling elementsrollably arranged between a raceway surfaceof inner ringand a raceway surfaceof outer ring. A lubricant film consisting of a solid lubricant is coated over an area equivalent to an area ratio of 75% or more of at least one member of the group consisting of raceway surfaceof inner ring, raceway surfaceof outer ring, and a rolling contact surfaceof rolling element. The thickness of the lubricant film is preferably 0.05 &#x3bc;m or more and 8 &#x3bc;m or less.

Rolling device

An access server starts the individual collection of communication statistics information on each of LCP sessions upon the establishment of a data link, individually collects communication statistics information on each of NCP sessions established on the LCP session, notifies a RADIUS server of the statistics information on the LCP session when the data link is released, and notifies, when the NCP session is released, the RADIUS server of the statistics information on the released NCP session.

Access server with function of collecting communication statistics information

An inner ringand an outer ringof a rolling bearingare made from steel that contains carbon in the range of 0.65 to 1.25% by mass, silicon in the range of 0.7 to 2.5% by mass, manganese in the range of 0.1 to 1.5% by mass, chromium in the range of 0.5 to 3.0% by mass, 1.5% by mass or less of molybdenum, 9 ppm or less of oxygen, 30 ppm or less of titanium, and 80 ppm or less of sulfur, and whose rating number of the Thin type A series inclusion is 1.5 or less and that of the Heavy type A series inclusion is 1.0 or less when the rating numbers are measured by a method stipulated in ASTM E45.

Rolling bearing

To predict a correction rated life at high accuracy. A life predicting device executes step S, step S, step Sfor inputting specification information including a basic dynamic rated load C and basic static rated load C, stepfor computing a dynamic equivalent load P based on the specification information. step Sfor setting a reliability factor a, step Sand step Sfor determining a contact ellipse area S, step Sfor inputting a foreign substance purchasing diameter d('debris' means 'foreign substance'), stepfor determining a standardized foreign substance diameter (d/&#x221a; S), step Sfor setting a life correction coefficient abased on the standardized foreign substance diameter, and step Sand step Sfor calculating a correction rated life Lbased on the reliability coefficient, the life correction coefficient, the basic dynamic rated load and the dynamic equivalent load and the like.

Life predicting method for rolling bearing, life predicting device, rolling bearing selecting device using life predicting device, program and environment coefficient determining method

A rolling bearing intended for longer life by improving seizure resistance and wear resistance in the circumstance with slip contact or in the circumstance where lubricant tends to be exhausted, which is manufactured by applying carburization or carbonitridation to an Si-added material to disperse and precipitate carbides or carbonitrides containing Si or Si&#x2014;X (X=one or more of Mn, Mo, and Cr) thereby improving the seizure resistance and the wear resistance by the self-lubrication effect thereof, the size of the carbides or carbonitrides being preferably 10 &#x3bc;m or less for preventing flaking, and the area ratio for the carbides or carbonitrides being preferably 1.0&#x2013;30% for obtaining sufficient self-lubrication effect.

A rolling bearing for belt-type continuously variable transmission with a metal belt including pieces has an inner ring; an outer ring; and rolling elements, wherein at least one of the inner ring, the outer ring and the rolling element is made of an iron alloy having a chromium content of from 2.5 to 20.0% by weight.

Rolling bearing for continuously variable transmission

A dynamic equivalent load P is calculated from data information of a rolling bearing. Next, a reliability coefficient ais determined, a lubrication parameter acorresponding to a used lubricant is calculated, and a contamination degree coefficient ais determined in consideration of a material coefficient. A fatigue limit load Pu is calculated on the basis of the data information. Thereafter, a load parameter {(P&#x2212;Pu)/C}&#xb7;1/ais calculated. On the basis of the lubrication parameter aand the load parameter {(P&#x2212;Pu)/C}&#xb7;1/a, a life correction coefficient ais calculated with reference to a life correction coefficient calculation map. The bearing life Lis calculated by L=a&#xb7;a&#xb7;(C/P).

Method and apparatus for predicting the life of a rolling bearing, rolling bearing selection apparatus using the life prediction apparatus, and storage medium

A power roller bearing of a toroidal-type continuously variable transmission unit that is used for a transmission of an automobile or the like comprises a power roller, an outer race, balls, a retainer, etc. Annular raceway grooves are formed individually on the respective opposite end faces of the outer race and the power roller. Treated-surface layers for enhancing the endurance of the power roller bearing are formed individually on the respective surfaces of the raceway grooves. The treated-surface layers include super-finished surfaces with the surface roughness of 0.05 Rad or less, formed individually on the raceway grooves, and low-friction layers formed individually on the super-finished surfaces. Alternatively, the treated-surface layers include residual compression stress layers formed on the respective surface layer portions of the raceway grooves by shot-preening.

Power roller bearing of toroidal-type continuously variable transmission unit

In a rolling bearing put under a working circumstance in which water tends to intrude into lubricants, it has been known such a phenomenon that hydrogen ions formed by decomposition of the lubricants are adsorbed to raceway surfaces and accumulated as hydrogen atoms in highly strained sites (in the vicinity of the position for maximum shearing stress), to cause stress corrosion cracking type peeling. The present invention provides a rolling bearing in which an oxide layer of an iron/chromium oxide series is formed at a thickness of from 1 to 1000 nm to at least one of raceway surfaces of bearing rings or rolling contact surfaces of rolling elements and a manufacturing method thereof. The oxide layer can inhibit hydrogen formed by decomposition of water incorporated in the lubricants from intruding into the matrix of the bearing members, thereby preventing early peeling for the raceway surfaces of the bearing rings or the rolling contact surfaces of the rolling elements and, thus, greatly improving the rolling life. The oxide layer can be formed simply by merely tempering the bearing member and then applying a re-heating treatment in air at a temperature lower than the tempering temperature.

Surface-treated rolling bearing and manufacturing method thereof

The toroidal-type continuously variable transmission comprises an input shaft rotatably supported, an input side disk, an output side disk, a plurality of trunnions, a plurality of power rollers, and a plurality of thrust rolling bearings , in which the mutually opposed inner surfaces of the input side and output side disks are respectively formed as concave surfaces each having an arc-shaped section, the peripheral surfaces of the power rollers are formed as spherical-shaped convex surfaces, and the peripheral surfaces of the power rollers are contacted with the inner surfaces of the input side and output side disks. In the thus structured toroidal-type continuously variable transmission, each of the thrust rolling bearings is made of high carbon chromium bearing steel and is also carbonitrided.

Toroidal-type continuously variable transmission

A surface to serve as a surface under ultrasonic inspection has a roughness of 0.4 &mgr;mRa or less, and wherein all imperfections existing a controlled volume X corresponding to all cross sections of a raceway ring assume a length of 0.2 mm or less as represented by the square root of areas of the imperfections. Accordingly, it is possible to provide a rolling bearing which does not become short-lived and obviates a concern about occurrence of cracking even when used in a harsh environment.

Rolling bearing, and method of ultrasonically detecting flaws in bearing raceway ring of rolling bearing

Machine part is constituted with steel with the carbon content of 0.2% or more and reduced with the hydrogen content after hardening by a heat treatment to 0.04 ppm or less. Further, hardness after hardening by the heat treatment is made to Hv 450 or more. Since such a machine part is excellent in the super long life fatigue characteristics, it can be used suitably as a bearing ring or a rolling element of a rolling bearing.

Machine part

In the thus structured toroidal-type continuously variable transmission, at least one of the concave surface of the input side disk, the concave surface of the output side disk, the convex surfaces of the power rollers, the raceway surfaces of the inner races of the power roller bearings, and the raceway surfaces of the outer races of the power roller bearings is, after heat treatment, subjected to grinding, superfinishing and shot-peening and then surperfinishing again, and the resultant surface residual compression stress is in the range from &minus;780 to &minus;1800 MPa.

Growing community of inventors

Kanagawa, Japan

Yasuo Murakami