We can judge the quality of the bearing by the noise of the raceway of the INA bearing. The general overall eccentric arm bearing sound is equal to the raceway sound plus other sounds. The raceway sound of a ball bearing is irregular, the frequency is above 1000Hz, its main frequency does not change with the speed, but its total sound pressure level increases with the speed of the speed. For bearings with loud raceway sound, the sound pressure level of the raceway sound decreases with the increase in viscosity; while for bearings with low raceway sound, the sound pressure level of the bearing with low raceway sound changes from a decrease when the viscosity increases to more than about 20mm2/s. To have increased. The greater the rigidity of the bearing seat, the lower the total sound pressure level of the raceway sound. If the radial clearance is too small, the total sound pressure level and main frequency of the raceway sound will increase sharply as the radial clearance decreases. The methods to control the raceway sound are: select low-noise bearings, that is, bearings with small waviness, and carefully choose the preconditions for use. The noise of the raceway often affects the noise of the entire machine, reducing the noise of the raceway can reduce the noise of the entire machine.

1. Grease lubrication
The relubrication of INA bearings is best implemented during the planned equipment shutdown period and regularly replenished. At the same time, the old grease is removed or the old grease is squeezed out through the drain. The grease nozzle should be wiped clean before adding fresh grease. If the bearing box does not have a grease nozzle, the bearing box cover or end cover should be opened to take out the old grease. After cleaning, add fresh grease of the same model.

2. Lubricating oil
Regularly check the oil level and quality of the lubricating oil. In general, the normal oil level should be within the range of 1/3-2/3 of the equipment oil level window or mark. The oil replenishment method is an oil cup, and the displayed oil level only represents the oil replenishment capacity, and the oil level of the bearing box meets the operating requirements. The oil level in the oil cup is less than 1/4 of its total volume, and oil replenishment can be considered.

Inspection and replenishment methods, take out a small amount of lubricating oil as a sample and compare it with fresh lubricating oil. Capable units may consider conducting an oil quality test to ensure that the oil quality is qualified. If the sample looks like a cloud, it may be the result of mixing with water, that is, the oil emulsification often referred to, and the lubricant should be replaced at this time.

The rolling sound of INA bearing and its control method The rolling sound is the harsh metal friction sound that may occur in the whole eccentric rotating arm bearing in all occasions. Most of it occurs in the larger grease-lubricated bearings, while the base oil performance Deteriorated grease is more likely to occur, and it hardly occurs during oil lubrication. In addition, it is more prone to occur in winter. When bearing pure radial load, it is prone to occur in occasions with large radial clearance, and depending on the size of the model, it is prone to occur within a specific speed range, and it will occur continuously. It will appear intermittently. The outer ring raceway of the bearing adopts a special processing method to prevent the rolling noise. If necessary, this kind of bearing can be selected, or the radial clearance of the bearing can be reduced appropriately, the use of high-performance grease and improved and integral eccentric rotating arm The bearing matches the rigidity of the machine.