INA Bearing Lubrication Methods Five1, manual lubricationINA Bearing lubricant is found insufficient, the timely use of fuel oil supply device, which is the most primitive methods. This approach is difficult to maintain a certain amount of oil due to the risk of neglect and forget big oil, usually used only for light load, low speed or intermittent movement of occasions. Best hole in the fuel set dust cover or valve, with blankets,