Shell type needle roller bearing
AssigneeNtn Corporation
InventorYuki OGAWA
Life of this patent
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Abstract
A shell-type needle roller bearing is provided which includes an outer ring in which a material excellent in corrosion resistance is used, and which can be easily press-fitted and can be manufactured at a low cost. A shell-type needle roller bearing is manufactured that includes a shell-type outer ring made of an austenitic stainless steel material, and having a radially outer surface including a non-heat-treated surface.
Claims19
A shell-type needle roller bearing comprising a shell-type outer ring made of an austenitic stainless steel material,
- wherein the shell-type outer ring has a radially outer surface including a non-heat-treated surface. Cm 2. The shell-type needle roller bearing according to claim 1, wherein the radially outer surface of the shell-type outer ring has a roughness set such that an arithmetic average roughness Ra in an axial direction is 0.04 μm or more and 0.13 μm or less, and such that a skewness Rsk of peaks and valleys in the axial direction is −2.4 μm or more and −0.1 μm or less.
The shell-type needle roller bearing according to claim 2, wherein the shell-type needle roller bearing has an outer diameter dimension of 012 mm or more and φ 30 mm or less.
The shell-type needle roller bearing according to claim 2, wherein the shell-type needle roller bearing has an outer diameter dimension of φ 12 mm or more and φ 30 mm or less.
The shell-type needle roller bearing according to claim 2, wherein the shell-type needle roller bearing is used while being press-fitted in a housing made of aluminum.
The shell-type needle roller bearing according to claim 2, wherein the shell-type needle roller bearing is used in an automotive electronic throttle body or an exhaust gas recirculation device.
Dependencies are inferred from the claim text.