Asahi-dow Limited

Nsk Corporation

Asahi Kasei Kogyo Kabushiki Kaisha

Nakanishi Metal Works Co., Ltd.

Kunio Fukuda

Hideo Kasahara

Kichiya Tazaki

Masahide Matsubara

Izumi Yamashita

Akiyoshi Honda

Kazuo Yoshida

Yuji Kusumi

Hiroshi Suzuki

Toshiyuki Suzuki

Hiroyuki Sawai

Yukihisa Mizutani

Eiichi Kawamura

Fukuji Kikkawa

Akiyoshi Yamaguchi

Sumio Ueda

Isao Kuribayashi

Akihisa Takano

Teruo Nagao

A roller cage made of metal for holding rollers of a roller bearing, includes: separation bars separately defining a plurality of window holes along a peripheral direction of the bearing with a constant interval thereamong. The window holes respectively receive said rollers therein. Each of the separation bars includes: a contact surface being formed by press-molding one of an outer diameter surface side end portion and an inner diameter surface side end portion thereof, and contacting with the rolling surface of the roller; and an expansion portion expanding to a radial direction of the bearing at the other of the outer diameter surface side end portion and the inner diameter surface side end portion which is not subjected to the press-molding.

Method of making roller cage for roller bearing

Roller cage for roller bearing

A self aligning roller bearing with retainer comprises an outer ring having an outer ring raceway in a shape of a spherical concave surface with a single center, an inner ring having a pair of inner ring raceways opposite to the outer ring raceway, a plurality of convex rollers provided rotatable between the outer ring raceway and the inner ring raceway, and a pair of retainers comprising a main portion formed in a hollow cylindrical frustum shape and having a plurality of crossbars, an outwardly flanged portion extending radially outward from the larger diameter end of the main portion and an inwardly flanged portion extending radially inward from the smaller diameter end of the main portion, and connected to the outwardly flanges portion by the crossbars so as to form a plurality of pockets each defined by two of the crossbars and outwardly and inwardly flanged portions to receive one of the convex rollers, the outwardly flanged portion having protrusions each protruding towards the pocket so as to rub against or be in close proximity to the first end face of the convex rollers, and the protrusions having an end face for guiding each of the convex rollers retained inside the respective pockets.

Self-aligning roller bearing with retainer

In a self-aligning roller bearing providing an outer race, an inner race, a plurality of barrel-shaped rollers, and a pair of cages, guide surfaces formed on outward flange portions of the cages for guiding the barrel-shaped rollers are caused to come closer to ends of the barrel-shaped rollers, so that the barrel-shaped rollers can be guided without fail even if an axial load is received. Therefore, the barrel-shaped rollers are prevented from being skewed, from increasing in torque required for rotating the barrel-shaped rollers, and from seizing up the barrel-shaped rollers.

Self-aligning roller bearing with cage

A polyphenylene ether resin composition comprising a polyphenylene ether resin and a rubber modified resin, said rubber modified resin containing a discontinuous elastomeric rubber phase dispersed in a continuous resin phase comprising a copolymer of a vinyl cyanide compound and a vinyl aromatic compound or a mixture of a homopolymer of a vinyl aromatic compound and a copolymer of a vinyl cyanide compound and a vinyl aromatic compound, said elastomeric rubber phase comprising a grafted elastomeric rubber which has a graft phase of a copolymer of vinyl cyanide compound and a vinyl aromatic compound and having a grafting degree of 35 to 300% by weight, the contents of vinyl cyanide compound in the graft phase and resin phase being 12 to 30% by weight and 3 to 10% by weight, respectively. The polyphenylene ether resin composition of the present invention is excellent in solvent resistance and colorability as well as impact strength.

Polyphenylene ether resin composition

Polyphenylene ether compositions having enhanced commercial value as engineering resin, which are excellent in the appearance characteristics, such as surface gloss and weld part beauty, and stress crack resistance. The present resin composition is composed of a polyether resin (PPE) and a rubber reinforced high impact polystyrene (HIPS), if desired, together with a vinyl aromatic compound resin, wherein the PPE has specific characteristics with respect to the intrinsic viscosity, the eluting amount, and others.

Polyphenylene ether compositions

A resin composition having nice color tone and high crack-resistance as well as flame-retardancy is obtained by blending

Resin composition having nice color tone and high crack-resistance

A heat resistant thermoplastic resin composition improved in working fluidity while keeping the characteristics of aromatic polyether resins such as heat resistance and solvent cracking resistance. This composition comprises 100 parts by weight of an aromatic polyether resin or a mixed resin of an aromatic polyether resin and a styrene resin and 0.1 to 10 parts by weight of a polyhydric alcohol fatty acid ester having at least one --OH group. This ester preferably has a molecular weight of at least 200.

Heat resistant thermoplastics resin composition excellent in processing

A thermoplastic polymeric material which is superior in mechanical strength comprises (1) 10 to 65% by weight of a hard copolymer containing as a comonomer an .alpha.,.beta.-unsaturated dicarboxylic acid anhydride and (2) 90 to 35% by weight of a polyamide, which are chemically bonded to each other. The thermoplastic polymeric material has a fine dispersion microstructure. The material may be reinforced by incorporating glass or carbon fibers therein.

Thermoplastic polymeric material and method for the preparation thereof

A novel diester compound of the formula (I): ##STR1## wherein each of R.sub.1 and R.sub.2 represents a group of the formula (II): ##STR2## wherein m is an integer of 1 to 5, is found to be capable of imparting excellent flame-retardancy to various inflammable polymeric materials such as polystyrene, polyester, polyamide, polyphenylene oxide, etc. without deleterious effects on other physical properties of such polymeric materials.

Diester of 3,5,3',5'-tetrabromo-bisphenol A with halogenated aromatic

A thermoplastic resin composition which has high heat resistance, high impact resistance and high molding processability and comprises 5-95% by wt. of a copolymer of a vinyl aromatic compound and an imide compound of an .alpha.,.beta.-unsaturated dicarboxylic acid and 5-95% by wt. of a polyphenylene ether resin together with or without up to 90% by wt. of an impact resistance reinforcing agent.

Thermoplastic resin composition having high heat resistance

A resin composition suitable for injection moulding and having excellent heat resistance, impact resistance and crack resistance, which is composed of polyphenylene ether and rubber-reinforced styrene resin and an amount of volatile matters in the resin having molecular weight of about 300 or less is 5000 ppm or less. This resin composition is prepared by melting and kneading the two resins above in an extruder with a vent under keeping the vent part under reduced pressure.

Resin composition for injection molding and method for producing the same

A polyphenylene ether composition excellent in impact resistance, heat stability, gloss and processability which contains

A highly heat resistant thermoplastic resin composition having high oil-resistance which contains

Highly heat-resistant thermoplastic resin composition having high

A novel diester compound of the formula (I): ##STR1## wherein each of R.sub.1 and R.sub.2 represents a group of the formula (II): ##STR2## wherein n is an integer of 0 to 4; and m an integer of 1 to 5, is found to be capable of imparting excellent flame-retardancy to various inflammable polymeric materials such as polystyrene, polyester, polyamide, polyphenylene oxide, etc. without deleterious effects on other physical properties of such polymeric materials.

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Chigasaki, Japan

Kunio Fukuda