Types of FYH Bearing Greases and Supplementary Methods

  Types of grease relubrication: There are various types of greases used in FYH-mounted rolling bearings. However, different types of greases, especially soaps with different greases, can significantly reduce the lubricating performance. Therefore, the supplementary grease should be the same as the initial filling grease to avoid the use of different types of grease. The recommended grease for FYH-mounted rolling bearings is the same as the initial filling grease (see Table 2.3). In addition, when other greases have to be used, they should be at least the same type (thickening agent) as the initial filling grease.

  Grease replenishing method: The lubricating grease with roller bearing grease is supplemented with a grease nozzle and a grease gun mounted on the bearing housing (figure 14.13). Fig. 14.13 Addition of grease to FYH-mounted rolling bearing 1 Sweep the grease nozzle and its periphery so that no foreign matter will enter the inside of the bearing 2 Sweep the grease gun and fill it with clean grease 3 Make-up grease Relubricate the FYH-mounted rolling bearing When grease is used, it is recommended that the shaft be turned by hand (or that the seat bearing be operated at a low speed). In this way, the old grease can be properly removed and the new grease can be evenly added to the inside of the bearing.

  In the case of mechanical structures where it is difficult to supplement grease with a standard (Type A) grease nozzle, Type B and Type C grease nozzles are also available. Please order. The types of grease nozzles are shown in Figure 14.14. When oil is fed to a plurality of seated rolling bearings using a centralized oiling device, a soft grease having a consistency of 300 to 380 is used. In order to properly replenish the predetermined amount of grease, proper piping must be performed. The piping with a rolling bearing is carried out using the threaded hole of the grease nozzle of the bearing housing. However, when the threaded hole of the bearing housing and the piping are different from each other, the coupling is used with a reducing sleeve joint. The structure of the reducer joint used for concentrating oil is shown in Figure 14.15. In addition, when performing centralized oiling, determine the short grease replenishment interval. If the supplementary volume fraction shown in Table 14.5 is added back, the bearing lubrication effect will be good.