| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a structure capable of improving a degree of freedom of installation to a limited space while securing required durability when used for an application to which a load is applied is limited. <P>SOLUTION: A diameter PCD<SB>4</SB>of a pitch circle of each ball 4, 4 is set to be 17 to 24 times a diameter Da of each ball 4, 4. The diameter PCD<SB>4</SB>of the pitch circle is 25 to 35 times a thickness T<SB>2</SB>of an outer ring 2a and a thickness T<SB>3</SB>of an inner ring 3a. An axial width B of the double row ball bearing 1a is 2.8 to 3.2 times the diameter Da of each ball 4, 4. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
