According to the amount of oil filling two forms: one kind is trace injection type, it contains is bearing grease of lubrication necessary minimum; Another is injection of type, maintains a material (polyethylene and grease mixture) will bearing the internal space of the filling full. Mill hollow shaft installation of rolling bearings is hollow shaft old method will be processed into suitable for the inner diameter of the bearing, the bearing hot device, bearing parts, bearings inside the external has a set of rings, top, set in and out of the material by spiral tube (or in and out of the material bushing) bolted in hollow shaft, the pressure. In grinding operation process, in and out of the material cylinder, the retaining bolt spiral often, become loose, caused the top set and the hollow shaft produce displacement, dust will go to empty shaft and the gaps between the set top box to bearing, make a grease gets dirty, lead to bad lubrication, cause the damage of the bearing frequently occurred.

Industrial fine grinding mill with the rolling bearing, in our country has been widely promotion, power consumption, increase production in save, save the lubricant, reduce maintenance quantity, reduce pollution and so on many aspects, received a good effect. At present some manufacturer follow the rolling bearing grinding machine, the method of hollow shaft and in rolling bearing of the installation of the form is not more shortcomings, to grinding machine manufacturers in the use in future work in operation brings some drawbacks. In order to solve this problem, we put forward the hollow shaft grinding machine, installation of rolling bearing best assembly method.

In order to overcome the above several shortcomings, we after years of practice and exploration, designed a new installation method, and in some use manufacturer to get a good application.

The method is: in the mill hollow shaft installation of rolling bearing parts will be bold in diameter, hollow shaft is the cooling of the thin oil hollow shaft and transmitted to the temperature on the bearing down to 60 degrees below normal range.

The advantages of the bearing in the following aspects:

1. The oil has a bearing a observation oil mark, operators can see oil a height, can prompt added the amount of oil, prevent for lack of oil and bad lubrication, to avoid the bearing damage accidents.

2. The normal operation of the bearing temperature than dry lubricating oil bearing temperature is much lower, and prolong the service life of the bearings.

3. Oil chamber of the bearing oil content, can install of rolling bearing outside diameter narrow (in ensure the installation in and out of the feeding devices have enough strength and torque force under the premise of), hollow shaft and in and out of the material tube connection set one end spiral flange, and in and out of the material spiral tube flange for the link. In the hollow shaft from coarse to fine change of end, set a pressure within the flange bearing collar, prevent bearing axial appear.

4. Thin oil lubrication grease lubrication is superior to, make bearing to minimize friction coefficient, power saving effect is better.

The second advantage is to remove the top bearing set, prevent dust into the bearing box, and maintain the good oil, to ensure the the service life of the bearings, safe and reliable operation.

The third advantage is due to install the rolling bearing parts of the hollow shaft diameter bold, make the rolling bearing and in and out of the cone material spiral between radial distances increased, have certain heat insulation cooling effect. On the bearing cooling, prolong service life, play a use

The fourth advantage is because of the rolling bearing diameter increase, and the hollow shaft average diameter size difference formation, to adopt thin oil lubrication room, improve the thin oil oil level, reduce the thin oil spill received certain effect.
 



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