Swing bearing
AssigneeNippon Thompson Co., Ltd.
InventorsKenichiro Tsuruta, Shinji Oishi, Masao Kondo, Koji Obara
Life of this patent
Estimating the term…
Abstract
A swing bearing allows a reduction in thickness, weight, and manufacturing cost by fixing together a pair of split rings each formed of a plate member to form an outer ring, and fixing together a pair of split rings each formed of a plate member to form an inner ring. The outer ring is composed of a pair of split rings which are obtained by splitting the outer ring at an axially midpoint of the first raceway groove, are formed of respective plate members, and are fixed together. The inner ring is composed of a pair of split rings which are obtained by splitting the inner ring at an axially midpoint of the second raceway groove, are formed of respective plate members, and are fixed together.
Claims8
A swing bearing comprising:
- an annular outer ring having a first raceway groove formed on an inner circumferential surface thereof;
- an annular inner ring having a second raceway groove formed on an outer circumferential surface thereof in such a manner as to face the first raceway groove of the outer ring, and disposed concentrically with the outer ring and rotatably in relation to the outer ring;
- and a plurality of rolling elements disposed in a load-carrying race formed between the first raceway groove of the outer ring and the second raceway groove of the inner ring;
- wherein the outer ring is composed of a pair of split rings which are obtained by splitting the outer ring at an axially midpoint of the first raceway groove and are fixed together;
- the inner ring is composed of a pair of split rings which are obtained by splitting the inner ring at an axially midpoint of the second raceway groove and are fixed together;
- each of the split rings of the outer ring and the split rings of the inner ring comprises a plate member having a predetermined thickness, and
- wherein each of the split rings of the outer ring comprises a first flat disk extending radially, a first track forming portion bent and extending from an inner peripheral end of the first flat disk in an inclination direction, and partially defining the first raceway groove, and a first flange portion bent and extending from an inner peripheral end of the first track forming portion in the axial direction, and
- wherein each of the split rings of the inner ring comprises a second flat disk extending radially, a second track forming portion extending from an outer peripheral end of the second flat disk in such a manner as to face the first track forming portion, and partially defining the second raceway groove, and a second flange portion extending from an outer peripheral end of the second track forming portion in such a manner as to face the first flange portion.
Dependencies are inferred from the claim text.