The principle of rolling bearing grease injection rate

Note the amount of fat principle: on the premise of guarantee sufficient lubrication of bearings, the less the better. Through summary of practical experience, the following principles is more appropriate. Is suitable for open air bearings, grease injection should be depending on the bearing cavity volume ( The two bearing cover and the bearing after the installation, the inclusion of air occupy part of the internal space, as shown in figure 1 blank parts other than the ball bearing) Bearing used in size and speed, For ac motor, and the number of available instead of speed) To briefly fatliquoring quantity calculation, shown in table 1. With oil baffle plate ( Also known as the left oil pan) The structure of the bearing chamber, the amount of grease should be appropriately increased first, and don't grease in the bearing cover cavity ( Here is to accept was thrown 'waste oil' 'bin', the oil for lubrication is not into the bearing, so new inject grease will be waste) 。 This kind of structure, because the grease in the bearing chamber, the sling is less, if not regular filling grease as required, will because of too little fat and reduce the lubrication effect, finally oil dry due to overheating, make whole bearing damage. To run on a regular basis ( Short interval) Add oil, G (the transshipment g) Can press type estimation: G = 0. Of the 005 db type 111 bearing outside diameter (D mm) ； Bearing width (B mm） 。 Note: note grease, site to clean, tools used in application of gasoline cleaning clean. After the oil injection, should be assembled and other components as soon as possible, to prevent oil entrained dust in entering the bearing of sundry, especially sand and iron filings, etc.