Nsk Corporation

Panasonic Intellectual Property Management Co., Ltd.

Nabtesco Corporation

Mamoru Aoki

Shunichi Kiyono

Hiroshi Ishiwada

Makoto Koganei

Daisuke Tominaga

Hiroshi Sakamoto

Masahiro Takahashi

Akira Suzuki

Hironori Suzuki

Hiroyuki Ito

Emiko Shiraishi

Michiharu Naka

Hiroaki Ishikawa

Hirotoshi Aramaki

Masao Yamamoto

Koichiro Ono

Magozou Hamamoto

Jiami Pu

Kazuo Akagami

Takayuki Miyagawa

Masayoshi Nakamura

Shigeyuki Sugiyama

Ikunori Sakatani

Kiyoshi Yamamoto

Takuma Iida

Takeshi Takizawa

Toru Takamizawa

Kinji Yukawa

Junji Ono

Taikou Nawamoto

Yuichiro Takemoto

Taketoshi Chifu

Shigeki Maehara

Manabu Nakakita

Kazushige Kakutani

Kenichi Shibasaki

Masamitsu Watanabe

Seizou Miyazaki

Nobuhiko Nishimura

Yukio Shikatani

Tatsuya Minamiyama

A tapered roller bearing () is includes an outer ring () having an outer ring raceway surface () on the inner peripheral surface thereof, an inner ring () having an inner ring raceway surface () on the outer peripheral surface thereof, and a plurality of tapered rollers () arranged in a rollable manner between the outer ring raceway surface () and the inner ring raceway surface (). A large flange () is formed on an end portion of the inner ring () on a large-diameter side of the inner ring, and the inner ring raceway surface () continuously extends to the end face () of the inner ring () on a small-diameter side of the inner ring. The contact angle (&#x3b1;) is 37&#xb0;30' to 50&#xb0;. In this manner, the tapered roller bearing having high moment rigidity and long life can be provided.

Tapered roller bearing

Provided is a resin cage for a tapered roller bearing in which a mold parting line which is extended in an axial direction is formed in a pillar portion defining a pocket. On facing surfaces of adjacent pillar portions, on an outer diameter side from the mold parting line, a first conical surface which slides in contact with an outer peripheral surface of a tapered roller is formed, and a first flat surface in a radial direction is formed in a portion on the outer diameter side from the first conical surface. On an inner diameter side from the mold parting line, a second conical surface which slides in contact with the outer peripheral surface of the tapered roller is formed, and a second flat surface in a radial direction is formed in a portion on the inner diameter side from the second conical surface.

Resin cage for tapered roller bearing and tapered roller bearing including the resin cage

The battery system is a combined system of a first battery and a second battery. The discharging curve (discharging characteristic) () of the first battery has a stable region (B). The discharging curve (discharging characteristic) () of the second battery has a stable region (B) in the range of voltage lower than the voltage in the stable region (B) of the first battery and also has an unstable region (A) in the range of voltage overlapping the voltage in the stable region (B) of the first battery. The first battery and the second battery are connected in parallel so that, in a discharging process, the discharging state of the entire battery shifts from the stable region (B) of the first battery to the stable region (B) of the second battery.

Battery apparatus

Tapered roller bearing cage

A preload measuring device for a double row rolling bearing unit includes an outer bearing ring member having double rows of outer ring raceways on an inner circumferential surface, an inner bearing ring member having double rows of inner ring raceways on an outer circumferential surface, rolling elements rollably arranged between the outer ring raceways and the inner ring raceways in each of the rows such that contact angles given to the respective rows are opposite to one another, axial displacement measuring means for obtaining an axial relative displacement between the outer bearing ring member and the inner bearing ring member, inclination angle measuring means for obtaining an inclination angle between center axes of the outer bearing ring member and the inner bearing ring member, and preload calculating means for obtaining a preload applied to the rolling elements based on the inclination angle and the axial relative displacement.

Preload measuring device for double row rolling bearing unit

An encodera characteristic of which is changed alternately at an equal interval in a circumferential direction is supported/fixed onto a hubconcentrically with the hub. A sensing portion of a sensorsupported on the outer ringis positioned in close vicinity to a sensed surface of the encoderto face thereto. Width dimensions of first and second sensed portions provided onto the sensed surface are changed continuously in a direction along which a to-be-sensed load is applied. Since a pattern according to which an output signal of the sensoris changed is changed pursuant to a change of the load, the load is derived by observing this pattern. The output signal is also utilized to sense a rotation speed of the hubin ABS or TCS control.

Rolling bearing unit with load measuring unit

A rolling bearing with sensor has an inner ring, an outer ring, rolling elements rollably disposed between the inner ring and the outer ring, a sensor provided on one of the inner ring and the outer ring and a detection member provided on the other of the inner ring and the outer ring radially opposed to the sensor which is adapted to be sensed by the sensor. A first retaining member is fixed to the outer ring end surface of the outer ring and retains one of the sensor and the detection member. A second retaining member is fixed to the inner ring end surface of the inner ring and retains the other of the sensor and the detection member. At least one of the inner end surface and the outer end surface is arranged so as to be pressed axially without the sensor or the detection member.

Rolling bearing with sensor and rotary state detecting device

Sensor-equipped rolling bearing, and rotation state detecting device

The present invention relates to a bearing apparatus with a sensor and a rolling bearing with a sensor used to movers such as automobiles or railway carriers, facility machines of equipment, or machine tools. One of the embodiments comprises a sensor detecting conditions of the rolling bearing, a ring-shaped sensor cover housing the sensor therein and secured to a stationary-side bearing ring, and a ring shaped presser member secured to a bearing housing provided outside in a radius direction of the sensor cover, or secured to a shaft, and an opening portion is provided at a decided portion of the sensor cover, and projections standing toward a side of the presser member are furnished in the circumference of the opening portion, the presser member is defined with cutouts for inserting the projections, and the cutouts are arranged with the projections.

Bearing device with sensor and rolling bearing with sensor

A rolling bearingis provided to support the rotating member of a small motor of an information-processing device wherein the groove radius ratio of the raceway groove of the inner raceis in the range from 52% up to 54%, while the groove radius ratio of the raceway groove of the outer raceis in the range from 54% up to 56%, and whereby the small motor rotates at a high rotation speed with a prolonged acoustic life.

Rolling bearing of a small motor for an information-processing device

In a bearing apparatus which is composed of two bearings each including a crown-shaped retainer and in which a lubricant is filled into its raceways, a preload is applied from the retainer pocket-opening side end face of an inner ring, and also a preload is applied from the retainer counter-pocket-opening side end face of an outer ring.

Rolling bearing and bearing apparatus

A motor comprises a rotor, a stator, and a shaft wherein one of the stator and the rotor is provided with a housing, a rolling bearing is provided between the housing and the shaft and having an inner race and outer race, the inner race is fixed to the shaft through adhesion between the outer peripheral surface of the shaft and the inner peripheral surface of the inner race, the outer race is fixed to the housing through press-fitting, and the outer peripheral surface of the shaft is formed with knurled grooves, where the number (P) of the knurled grooves in the circumferential direction and the number (Z) of the rolling members in the rolling bearing are in the relations of P&nequiv;n Z and P&nequiv;nZ&plusmn;1 where n is a positive integer.

Motor with a stationary shaft with formed knurled grooves on shaft and/or housing

In the ball bearing, the ratio of the radius of curvature of an inner race raceway to the outside diameter of balls is set in the range of 0.51 to 0.54. Also, the ratio of the radius of curvature of an outer race raceway to the outside diameter of balls is set in the range of 0.54 to 0.56. Further, an interior geometric clearance c is set at 13 &mgr;m or less. Thanks to these specifications, the balls can be prevented from running up onto the edge of the outer race raceway

Ball bearing

A rolling bearing comprises an outer race member, an inner race member concentrically arranged therewith, rolling elements disposed therebetween, and a shield plate attached to a side end of an inner periphery of the outer race member by being caulked or latched. The shield plate is provided with a curled portion which curls outwardly in the axial direction at a stepped portion of a groove formed at a side end of the outer race member, and the shield plate is formed with slits extended toward an outer periphery of the shield plate from portions which are not located at and over the bottom of the curled portion, the number of the slits being more than (nZ.+-.X) inclusive of (nZ.+-.X), where n is a positive integer, Z is the number of balls and X is an integer more than 1.

Rolling bearing with a shield plate

In a rolling bearing providing an inner race, an outer race, a plurality of rolling elements and a sealing plate closing an open end between the outer circumference of the inner race and the inner circumference of the outer race, the sealing plate is formed of a synthetic resin in a generally annular shape, the sealing plate including an annular main plate portion and an engaging rim formed along an outer peripheral edge of the main plate portion, the engaging rim having an outwardly opened groove on its lateral side and being deformable elastically in a radial direction of the rolling bearing to engage the engaging groove. Further, the outwardly opened grooved includes a bottom surface which is positioned between a first plane and a second plane that extend outer and inner surfaces of the main plate portion in the radial direction, respectively. The rolling bearing achieves a structure having high sealing performance to prevent the deformation of sealing plate.

Rolling bearing with sealing plates

Growing community of inventors

Kanagawa, Japan

Mamoru Aoki