Mitsubishi Hitachi Power Systems, Ltd.

Sumitomo Bakelite Company Limited

Hitachi Construction Machinery Co., Ltd.

Hitachi Industrial Products, Ltd.

Mitsubishi Power, Ltd.

Motoki Sato

Makoto Hemmi

Kenta Suzuki

Jun Okada

Kenichi Murata

Tomoaki Inoue

Masahiko Ono

Hayato Masuda

Tomoharu Morita

Yumiko Yamanoi

Shinichi Sekido

Naohiko Takahashi

Mariko Otani

Jun Ichimura

Makoto Henmi

Tatsuya Ono

An elastomer of the present invention is used for a molded body for low temperature environments, includes a silicone rubber, and has a characteristic in which the expression ((tensile stress M−tensile stress M0)/tensile stress M0)×100 is equal to or more than a predetermined value and equal to or less than a predetermined value, where the tensile stress Mand the tensile stress M0 are respectively obtained under two different measurement conditions of performing or not performing a cooling treatment of maintaining −40° C. for 30 minutes.

Elastomer and molded body

A silicone rubber-based curable composition according to the present invention includes an organopolysiloxane including a vinyl group-containing organopolysiloxane (A), and an inorganic filler including silica particles (C), in which in aH-NMR spectrum of the silicone rubber-based curable composition, a first peak derived from a vinyl group is present, a vinyl group index is equal to or less than 3.5×10% by mole, and a content of the inorganic filler satisfies a range of equal to or more than 5 parts by weight and equal to or less than 60 parts by weight with respect to 100 parts by weight of the organopolysiloxane.

Silicone rubber-based curable composition, structure, wearable device, and method for manufacturing structure

An abnormality diagnosis device for a planetary gear speed reducer includes a second vibration sensor attached to a housing of a hydraulic motor having an output shaft coupled to the planetary gear speed reducer. A controller computes a peak frequency Fm of the hydraulic motor and a speed of rotation of the hydraulic motor on the basis of second vibration data acquired through the second vibration sensor, compute, on the basis of the computed speed of rotation, the number of a plurality of gears included in the planetary gear speed reducer, and the number of teeth of each of the gears, characteristic frequencies fd of the plurality of gears, and determines presence or absence of abnormality in the plurality of gears on the basis of the peak frequency Fm of the hydraulic motor and amplitudes at the characteristic frequencies fd of first vibration data acquired through a first vibration sensor attached to the planetary gear speed reducer.

Abnormality diagnosis device for planetary gear speed reducer and construction machine

A tilting pad journal bearing is arranged such that a circumferential relative position of an opening portion of an oil feeding hole to supply lubricant oil to a sliding portion of a bearing pad with respect to the bearing pad differs depending on the position of each bearing pad. For a bearing pad under a rotary shaft which supports the load of the rotary shaft, the circumferential position of an opening portion of an oil feeding hole with respect to the bearing pad is set toward an upstream side of a space between pads in a rotating direction of the rotary shaft. For a bearing pad above the rotary shaft, the circumferential position of an opening portion of an oil feeding hole with respect to the bearing pad is set toward a downstream side of a space between pads in the rotating direction of the rotary shaft.

Tilting pad journal bearing and rotary machine using same

Provided is a tilting pad type journal bearing capable of reducing the amount of oil that has to be supplied to the bearing. A bearing comprises nozzleswhich are each arranged between padsto supply lubricating oil to sliding surfacesof the pads. The sliding surfaceof each of the padis formed so that the width of the sliding surfaceincreases as it goes from a front edge part towards a rear edge part thereof. A tip end part of each of the nozzleshas a groove partwhich induces a flow heading from lateral parts towards the center in the width direction, in an oil flow from the rear edge part of the sliding surfaceof an upstream padto the front edge part of the sliding surfaceof a downstream pad

Tilting pad type journal bearing

Provided is a tilting pad bearing capable of suppressing the temperature rise of sliding surfaces of pads and reducing the amount of oil that has to be supplied to the bearing. The tilting pad bearing comprises: a bearing housing; a plurality of padswhich are arranged to be pivotable with respect to the bearing housing; a channelwhich is formed in each of the pads; a first nozzlewhich is formed in each of the pads, connects with the channel, and is open on a rear end surfaceof the pad; and a second nozzlewhich is formed in each of the pads, connects with the channel, and is open on a rear edge part of a sliding surfaceof the pad

Tilting pad bearing

A tilting pad bearing is provided that can reduce an amount of oil leaking from the side edges of a sliding surface of a pad, thereby reducing an amount of oil to be fed onto the sliding surface of the pad. The tilting pad bearing includes journal pads arranged in a circumferential direction of a rotating shaft, and a bearing housing for carrying the journal pads in a tiltable manner via associated pivots. Lubricating oil is fed to a sliding surface of the journal pad via an oil-feeding hole formed in the journal pad. The sliding surface of the journal pad has a portion formed so that the portion has an axial width that gradually increases, as the axial width approaches the circumferential downstream side of the rotating shaft, from an oil-feed start position.

Growing community of inventors

Tokyo, Japan

Motoki Sato