Double row spherical roller bearing, an oil tank (W33) and without oil groove difference, is not the quality of oil groove?
With W33 and without W33 bearings, size, size, quality exactly the same, that is, function is not the sameThe bearing outer ring with W33 is provided with a lubricating groove, and the oil tank is provided with 3 lubricating holes at the equal distance to improve the lubrication effect and select the lubrication environmentIf it's not necessary, you don't have to choose W33, because W33 is more expensive.
With W33 and without W33 bearings, size, size, quality exactly the same, that is, function is not the sameThe bearing outer ring with W33 is provided with a lubricating groove, and the oil tank is provided with 3 lubricating holes at the equal distance to improve the lubrication effect and select the lubrication environmentIf it's not necessary, you don't have to choose W33, because W33 is more expensive.
There is some truth to this statement in some wayMainly because of lubricationGrease without oil tank bearings can be stored inside the bearings for a long period of timeBut the oil in the oil bearing groove will escape through the oil holeSee what lubrication he uses, grease or grease, and if the lubrication is good, there is no difference between the two
