Title:
遊星歯車装置及び遊星歯車装置の製造方法
Document Type and Number:
Japanese Patent JP6863882
Kind Code:
B2
Abstract:
Provided is a technique capable of easily obtaining necessary bearing characteristics even when environmental temperature changes, when coefficients of linear expansion of a carrier and casing are different. The planetary gear device comprises: a casing with an internal gear; an external gear engaged with the internal gear; a carrier disposed on an axial side of the external gear; and a main bearing disposed between the casing and the carrier. The main bearing is a bearing of a type to which a preload is applied. The casing and the carrier are made of materials having different coefficients of linear expansion. In a carrier unit comprising the casing, the carrier and the main bearing, when a load imparted to a rolling member of the main bearing when the casing begins to rotate with respect to the carrier is referred to as a rolling body dynamic load (Fbrg), the carrier unit allows the rolling body dynamic load (Fbrg) to be within a permissible range (Rb) of 3.0 kgf to 25.0 kgf in a temperature range (Ra) of -10°C to 50°C.
Inventors:
Abe Shun
Atsushi Tamenaga
Atsushi Tamenaga
Application Number:
JP2017226510A
Publication Date:
April 21, 2021
Filing Date:
November 27, 2017
Export Citation:
Assignee:
Sumitomo Heavy Industries Ltd.
International Classes:
F16H1/32; F16C19/16; F16C19/36; F16C25/08
Domestic Patent References:
| JP2014169736A | ||||
| JP2006292075A | ||||
| JP2002054630A | ||||
| JP1205942A | ||||
| JP2003172341A | ||||
| JP2014185731A | ||||
| JP1133549U |
Attorney, Agent or Firm:
Sakaki Morishita
Tomisho Teruo
Tomisho Teruo