Rolling apparatus
AssigneeNsk Ltd.
InventorsToyohisa Yamamoto, Norifumi Ikeda
Life of this patent
Estimating the term…
Abstract
A rolling bearing 1 comprises a inner ring 2 (as a movable member), an outer ring 3 (as supporter) for supporting the inner ring 2, and a plurality of rolling elements 4 disposed between the inner ring 2 and the outer ring 3. The rolling element are rotated in accordance with the rotation of the inner ring 2. The rolling bearing is to be located in the vicinity of a heat source. The outer ring 3 located nearer to the heat source than the inner ring 2 is composed with a material of a heat conductivity being 40 W/m·K or less.
Claims13
A rolling apparatus to be installed in the vicinity of a heat source, comprising:
- a movable member enabling rotation or linear motion;
- a supporter movably supporting said movable member;
- and
- a plurality of rolling elements disposed between said movable member and said supporter and rolled in company with the movement of said movable member,
- wherein a grease is charged in a space enclosed with said movable member and a portion of said supporter where opposites to the movable member, and a thickening agent contained in the composition of the charged grease is 15 to 35 wt %.
A rolling apparatus to be installed in the vicinity of a heat source, comprising:
- a movable member enabling rotation or linear motion;
- a supporter movably supporting said movable member;
- and
- a plurality of rolling elements disposed between said movable member and said supporter and rolled in company with the movement of said movable member,
- wherein a grease is charged in a space enclosed with said movable member and a portion of said supporter where opposites to the movable member, and the amount of the charged grease is 8 to 23 vol % of the capacity of said space.
A rolling apparatus to be installed in the vicinity of a heat source, comprising:
- a movable member enabling rotation or linear motion;
- a supporter movably supporting said movable member;
- and
- a plurality of rolling elements disposed between said movable member and said supporter and rolled in company with the movement of said movable member,
- wherein a grease is charged in a space enclosed with said movable member and a portion of said supporter where opposites to the movable member, and viscosity of abase oil of the charged grease is 200 to 700 mm2/sec at 40° C.
A rolling apparatus to be installed in the vicinity of a heat source, comprising:
- a movable member enabling rotation or linear motion;
- a supporter movably supporting said movable member;
- and
- a plurality of rolling elements disposed between said movable member and said supporter and rolled in company with the movement of said movable member,
- wherein said rolling apparatus satisfies one of following first to third conditions (1)-(3), including,
- (1) said first condition where at least the rolling elements are fabricated with a material of a heat conductivity being 40 W/m·K or less,
- (2) said second condition where either of the movable elements and the supporter which either is nearer to the heat source is fabricated with a material of a heat conductivity being 40 W/m·K or less, and
- (3) said third condition that either of the movable elements and the supporter which either is nearer to the heat source, and the rolling elements are fabricated with a material of a heat conductivity being 40 W/m·K or less.
Dependencies are inferred from the claim text.