Spherical roller bearing, 轴承) Lubricating oil calculation

Spherical roller bearing, 轴承) Lubricating oil calculate the quantity of oil required for the three kinds of bearing lubrication depends largely on the types of three kinds of bearing, the design of the oil system, the type of lubricating oil and so on. It is hard to think of a situation that is suitable for all kinds of simple and direct formula, has wide applicability. With automatic transmission oil bearing ( Such as the angular contact ball bearing) Not with automatic transmission oil bearing (than Such as double row cylindrical roller bearings) Need more oil. Especially when the speed coefficient ( n。 dm） Value is larger, the difference is more apparent. Through a large number of experiments, oil supply Q calculation is as follows: Q = WdB Q - type - Fuel supply, mm3 / h W - Coefficient of 0. 01 mm / h D - Bearing diameter, mm - B Bearing width, mm, however, the actual fuel supply should be based on the value expansion of 4 to 20 times. In order to obtain the best lubricating effect, also need to experiment to adjust the fuel supply. Drainage design for high speed rotating bearing, oil supply should be paid attention to in order to reliably lubricated bearing internal, ( Such as the nozzle form, installation location, etc. ) In the design. Bearing lubrication depends entirely on shaft bearing types and configurations. The best way for a single bearing, lubrication from the side into the bearing. Nozzle hole is flush with the inner ring, not to keep. Especially when the suction and discharge when the direction of the bearing is not easy to determine ( Such as the angular contact ball bearing) Enter the bearing, lubricating oil must be in the direction. If the condition allows, the best lubricant through a special nozzle, and then into the bearing. The nozzle length depends on the bearing size, diameter of 0. 5 ~ 1. 0mm。 Also allow the lubricant to the bearing outer ring. In this case, should pay attention to see whether there is oil into the area between the ball and outer pressure. For double row bearings, oil must be from the height of the outer ring raceway flush into bearing, in order to provide adequate lubrication for bearings. When bearing outside diameter between 150 ~ 280 mm, the need to add a nozzle. To prevent the formation of residual oil deposits at the bottom of the bearing, need to install a drain, length more than 5 mm. In order to meet the requirements of modern high speed spindle of machine tool lubrication system, the parameters of the oil and gas centralized lubrication system should be further refined and accurate research. This is because: type lubricant, lubrication method, operating slide and bearing type, bearing configuration factors are decided the role of bearing rotating speed.