Rolling apparatus
First Claim
1. A rolling device comprising an outer member and an inner member each having a raceway surface and rolling elements rolling on the raceway surface by rotational or linear movement of the outer member or the inner member in which the outer member and/or the inner member is constituted with at least one kind of titanium alloys of β
- type titanium alloys, near type titanium alloys and α
+β
type titanium alloys.
1 Assignment
0 Petitions
Accused Products
Abstract
The bearing rings 1 and 2 of a rolling bearing is formed of one kind of titanium alloys of β type titanium alloys, near β type titanium alloys and α+β type titanium alloys. The titanium alloy has a surface hardness of Hv 400 or more and less than Hv 600 for increasing the corrosion resistance and wear resistance of the bearing ring. Spherical rolling elements 3 rolling on the raceway surfaces 1a and 2a of the bearing rings 1 and 2 are formed of ceramics such as silicon nitride. When β type titanium alloys or α+β type titanium alloys after a solution treatment and applied with an oxidation treatment at a low temperature of 400 to 600° C. are used as the material for the bearing ring, a bearing ring made of titanium alloy suitable to use under a circumstance requiring corrosion resistance is obtained.
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Citations
30 Claims
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1. A rolling device comprising an outer member and an inner member each having a raceway surface and rolling elements rolling on the raceway surface by rotational or linear movement of the outer member or the inner member in which
the outer member and/or the inner member is constituted with at least one kind of titanium alloys of β - type titanium alloys, near type titanium alloys and α
+β
type titanium alloys. - View Dependent Claims (2, 3, 4, 5, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- type titanium alloys, near type titanium alloys and α
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6. A rolling device comprising an outer member and an inner member each having a raceway surface, rolling elements rolling on the raceway surface by rotational or linear movement of the outer member or the inner member and a cage for holding the rolling elements in which
the outer member and/or the inner member is constituted with one kind of titanium alloys of β - type titanium alloys, near type titanium alloys and α
+β
type titanium alloy and the titanium alloy has a surface hardness of Hv 400 or more and less than Hv 600 and the cage has a heat conductivity of 20 W/(m·
K) or more. - View Dependent Claims (7)
- type titanium alloys, near type titanium alloys and α
-
8. A rolling device comprising an outer member and an inner member each having a raceway surface and rolling elements rolling on the raceway surface by rotational or linear movement of the outer member or the inner member in which
at least one of the outer member, the inner member and the rolling elements is constituted with a titanium alloy and which has a ω - phase with the size of the crystal particles of 1 μ
m or less. - View Dependent Claims (9, 10)
- phase with the size of the crystal particles of 1 μ
Specification