The effect of NSK bearing and smooth oil cooperation

Source: China Bearing Network Time: 2014-04-17

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The effect of the bearing cooperation is that the stop ring and the rotating ring of the NSK bearing are fixed from the stop of the device (usually the bearing seat) and some of the rotation (usually the shaft); then the load and the limit are transmitted under the rotating state. The basic task of the movement system relative to the orientation of the stopping system.
On the shaft and in the bearing housing; the rolling bearing needs to fix its orientation in three directions: radial, axial and tangential directions. The radial and tangential positioning is completed by the tight cooperation of the bearing ring; the axial positioning is only required In a few cases, tight cooperation is usually used, usually using axial limit parts; such as end caps and retaining rings, etc., the axial orientation is limited to the clearance range.
Bearings should pay attention to the following four points when selecting and cooperating. The circumferential surface of the bearing ring should have excellent support and uniform force; to reduce the deformation and give full play to the bearing capacity of the bearing.
The bearing ring cannot slide in the tangential direction in its cooperative appearance; otherwise, the cooperation surface will be damaged.
It is necessary for the free end bearing to be accustomed to the change of the length of the shaft and the bearing housing hole; that is, it is necessary to have the ability to swim in a certain range with a customary axial orientation.
It is necessary to make the NSK bearing device and disassembly simple; save labor, save time and save money.
It is often advantageous to make good use of the cooperative effect of NSK bearings; experts suggest that we consider the above four points in a comprehensive consideration.
For grease-smooth bearings and double-sided oil seals or dust caps; there is no need to remove the seal bearing assembly. Check the dimensions and finishing conditions of the associated parts.
1, the smooth and smooth smooth bearing is the best in the program equipment stop time; and make up for the time; together; the old grease is removed or the old grease is squeezed out through the oil spill. Wipe the grease fitting clean. If the bearing housing does not have a grease fitting; then open the bearing housing cover or end cap; in order to remove the old grease; after finishing; make up the same type of fresh grease.
2, smooth oil smooth timing to check the oil level and oil quality of the smooth oil; under normal conditions; the normal oil level should be within the equipment oil level window or within the range of 1/3-2/3. The oil filling method is the oil cup; The oil level that appears is only representative of the oil replenishment; the oil level of the bearing housing is satisfactory for the operation; the oil level in the oil cup is less than 1/4 of its total volume.
View and replenish the oil method; take out a small amount of smooth oil as a sample and compare it with fresh smooth oil; the qualified unit can think about the oil quality test; to ensure the oil quality is qualified. If the sample looks like a cloud; then it can be with water The result of mixing; that is, the oil emulsification we often say; the smooth oil should be replaced at the moment.
If the color of the sample is darker or thicker, it can be shown that the smooth oil is now carbonized at the beginning; the old smooth oil should be completely replaced. If it is possible; use fresh smooth oil to wash the oil circuit. When replacing the smooth oil ; should ensure that the replacement of the smooth oil new and old type; and make up for the satisfactory demand of the oil level.
Use oil-type smooth system; if the oil temperature is below 60 Â° C (140 Â° F); and the smooth oil is not contaminated; then replace the smooth oil once a year. If the oil temperature is 60-100 Â° C (140- 210Â°F); replace the smooth oil four times a year. If the oil temperature is 100-120Â°C (210-250Â°F), replace the smooth oil once a month. If the oil temperature is 120Â°C (250Â°F) Above; then replace the smooth oil once a week.

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