Lubricant compositions and rolling device

Abstract

The lubricant compositions of the invention include a saturated fatty acid triglyceride as a lubricating ingredient and further contain an antioxidant or a thickener which is magnesium stearate or calcium stearate. Consequently, the lubricant compositions are harmless even when eaten, have excellent lubricity, and impose little burden on the environment. The rolling device of the invention not only imposes little burden on the environment because the device is lubricated with either of these lubricant compositions, but also has excellent durability.

1 - 6 . (canceled) 
     
     
         7 . A lubricant composition which comprises a saturated fatty acid triglyceride and an antioxidant. 
     
     
         8 . The lubricant composition as claimed in  claim 7 , wherein the antioxidant comprises at least one member selected from phenols, polyphenols, flavonoids, carotenoids, vitamins, vitamin analogues, and organic acids. 
     
     
         9 . The lubricant composition as claimed in  claim 7  or  8 , which contains a coenzyme Q. 
     
     
         10 . The lubricant composition as claimed in  claim 7  or  8 , which contains a fatty acid ester, a metal soap, or a urea compound as a thickener. 
     
     
         11 . The lubricant composition as claimed in  claim 9 , which contains a fatty acid ester, a metal soap, or a urea compound as a thickener. 
     
     
         12 . A lubricant composition which comprises a saturated fatty acid triglyceride as a base oil and either magnesium stearate or calcium stearate as a thickener. 
     
     
         13 . A rolling device equipped with an inner member which has a raceway surface in the outer surface thereof, an outer member which has a raceway surface that faces the raceway surface of the inner member and which has been disposed outside the inner member, a plurality of rolling elements which have been disposed between the two raceway surfaces so as to be freely rollable, and a lubricant which lubricates between each raceway surface and the rolling elements, wherein the lubricant is the lubricant composition according to  claim 7  or  8 . 
     
     
         14 . A rolling device equipped with an inner member which has a raceway surface in the outer surface thereof, an outer member which has a raceway surface that faces the raceway surface of the inner member and which has been disposed outside the inner member, a plurality of rolling elements which have been disposed between the two raceway surfaces so as to be freely rollable, and a lubricant which lubricates between each raceway surface and the rolling elements, wherein the lubricant is the lubricant composition according to  claim 9 . 
     
     
         15 . A rolling device equipped with an inner member which has a raceway surface in the outer surface thereof, an outer member which has a raceway surface that faces the raceway surface of the inner member and which has been disposed outside the inner member, a plurality of rolling elements which have been disposed between the two raceway surfaces so as to be freely rollable, and a lubricant which lubricates between each raceway surface and the rolling elements, wherein the lubricant is the lubricant composition according to  claim 10 . 
     
     
         16 . A rolling device equipped with an inner member which has a raceway surface in the outer surface thereof, an outer member which has a raceway surface that faces the raceway surface of the inner member and which has been disposed outside the inner member, a plurality of rolling elements which have been disposed between the two raceway surfaces so as to be freely rollable, and a lubricant which lubricates between each raceway surface and the rolling elements, wherein the lubricant is the lubricant composition according to  claim 11 . 
     
     
         17 . A rolling device equipped with an inner member which has a raceway surface in the outer surface thereof, an outer member which has a raceway surface that faces the raceway surface of the inner member and which has been disposed outside the inner member, a plurality of rolling elements which have been disposed between the two raceway surfaces so as to be freely rollable, and a lubricant which lubricates between each raceway surface and the rolling elements, wherein the lubricant is the lubricant composition according to  claim 12 .