Patent ID: 8197142

Claim:
A bearing apparatus for supporting a shaft to a housing which includes a support hole and an oiling passage connected to the supporting hole to supply lubricating oil, the bearing apparatus comprising: two split outer ring halves which include outer ring raceway surfaces formed on inner diameter surfaces of the split outer ring halves and joint surfaces formed at circumferential ends of the split outer ring halves and are disposed in close contact with each other at the joint surfaces within the supporting hole of the housing, respectively; and a plurality of rollers which are disposed so as to be capable of rolling on the outer ring raceway surface and support the shaft, wherein each of the two split outer ring halves includes an oil hole penetrating the split outer ring half in a radial direction thereof and each of the two split outer ring halves includes an oil groove formed on an outer diameter surface of the split outer ring half along a circumferential direction thereof such that the oil groove extends less than the entire circumference of each one of the split outer ring halves so as to allow the oiling passage and the oil holes to communicate with each other, wherein each of the oil holes is disposed at a position located at an angle of within approximately 45° from the joint surface of the split outer ring halves in an opposite direction to a rotating direction of the shaft, and wherein the oil holes are disposed outside a loaded zone of the bearing apparatus.