公开(公告)号：US10605304B2

公开(公告)日：2020-03-31

申请号：US16091857

申请日：2017-04-12

Applicant: NSK LTD. ,  TOCALO CO., LTD

Inventor： Manabu Yamada ,  Naozumi Nakata ,  Shinichi Nishiguchi ,  Junichi Takeuchi ,  Seiki Matsuura ,  Yuji Okada

IPC: F16C19/52 ,  F16C19/06 ,  F16C33/64 ,  F16C33/58 ,  F16C33/62 ,  F16C35/077

Abstract: An insulated bearing includes a pair of bearing rings arranged concentrically to each other and rolling elements arranged to be rotatable between the pair of bearing rings, at least one of the bearing rings having an insulating layer formed thereon. The one of the bearing rings having the insulating layer formed thereon has an annular groove having an arc-shaped cross section formed on each of both end surfaces of the bearing ring. At least a surface from a non-raceway surface side circumferential surface to the annular groove of the bearing ring is covered by the insulating layer. The insulating layer is a ceramic thermal sprayed layer.

公开(公告)号：US10260562B2

公开(公告)日：2019-04-16

申请号：US15539461

申请日：2015-12-24

Applicant: TOCALO CO., LTD ,  NSK LTD.

Inventor： Junichi Takeuchi ,  Yuji Okada ,  Masaya Nagai ,  Manabu Yamada ,  Naozumi Nakata

IPC: C23C4/10 ,  F16C33/62 ,  F16C33/64

Abstract: An insulated bearing includes an outer ring, an inner ring, and a plurality of rolling elements. At least one of the outer ring and an inner ring is made of metal, the plurality of rolling elements are provided between the outer ring and the inner ring, so as to be freely rolled, and at least one of the outer ring and an inner ring is coated with an insulating layer. The insulating layer is formed of a mixture in which silicon carbide and/or aluminum nitride as an additive are/is dispersed in aluminum oxide as a base matrix. The content of the additive is 1 to 40 mass % with respect to the total amount of the mixture.

公开(公告)号：US11193195B2

公开(公告)日：2021-12-07

申请号：US16616323

申请日：2018-05-17

Applicant: TOCALO CO., LTD. ,  DAIDO STEEL CO., LTD. ,  DAIDO CASTINGS CO., LTD.

Inventor： Junichi Takeuchi ,  Masaya Nagai ,  Shinichi Kubo ,  Masashi Nagaya ,  Yoshinori Sumi ,  Yoshihiko Koyanagi ,  Hiroyuki Takabayashi ,  Yasuhiro Takenaka

IPC: C23C4/067 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/48 ,  C23C4/10 ,  C22C38/08 ,  C22C38/10 ,  C22C38/34 ,  C22C38/38 ,  C22C38/18 ,  C23C4/11

Abstract: A component for a hot-dip metal plating bath includes a base material and a thermal spray coating disposed to cover a surface of the base material. The base material includes ferritic stainless steel that contains: C: 0.10% to 0.50% by mass; Si: 0.01% to 4.00% by mass; Mn: 0.10% by mass to 3.00% by mass; Cr: 15.0% to 30.0% by mass; a total of Nb, V, Ti, and Ta: 0.9% by mass to 5.0% by mass; and a balance of Fe and unavoidable impurities. The ferritic stainless steel includes a microstructure that includes a ferrite phase as a main phase and a crystallized carbide, an area fraction of a Nb carbide, a Ti carbide, a V carbide, a Ta carbide, and a composite carbide thereof to the crystallized carbide of 30% or more. The hot-dip metal plating bath contains 50% by mass or more of Al.