Patent ID: 6428212
Filing Date: 2002-08-06
Classification: B21B,F16C

Abstract:
A lubricating structure of a bearing for lubricating a bearing by supplying oil air which is transmitted with pressure through respective distribution passages of an oil air distributor from an oil air supply apparatus to the bearing, comprising:a first lubrication route for supplying said oil air to the bearing to lubricate inner portion of the bearing; and a second lubrication route for supplying said oil air to the bearing, and leading this oil air to a fit portion between the internal diameter surface of the inner race and the shaft portion through a seal member having a predetermined void portion, thereby lubricating this fit portion, and wherein a cross-section area A of a lubricating passage composing the second lubricating route satisfies the following formula: V=Q/A&gE;6 m/s â€ƒwhere V is a velocity of the oil air in the lubricating passage; and Q is an amount of supply of the oil air.