Assembly of hollow shaft and rolling bearing

Source: China Bearing Network Time: 2014-01-13

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

Industrial fine grinding mills use rolling bearings; they have been widely implemented in China; in terms of saving electricity consumption, improving production value, saving smooth oil, reducing repairs, reducing pollution, etc.; receiving outstanding results. Some current manufacturers Imitate the choice of rolling mills for rolling mills; there are many unreasonable points in the equipment mode of hollow shafts and rolling bearings; the manufacturers of grinding mills have brought certain disadvantages in the future work. In order to deal with this problem; 2. The best equipment method for rolling bearing of hollow shaft equipment of mill is proposed.
The old method of grinding hollow shaft equipment rolling bearing is to process the hollow shaft into the inner diameter of the suitable bearing; the bearing thermal equipment, the bearing part, and the outer ring of the bearing have a top sleeve; the top sleeve is placed in the discharge spiral cylinder (or the inlet and outlet lining) Set) bolted to the hollow shaft; compacted. During the grinding process; the inlet and outlet spiral barrels and fixing bolts are often loose; the top sleeve and the hollow shaft are displaced; the dust will be between the hollow shaft and the top sleeve. In the gap into the bearing box; make the smooth grease dirty; cause smoothness; the formation of the damaged appearance of the bearing has an attack.
In order to overcome some of the above defects; let us pass a few years of theory and exploration; portray a new type of equipment approach; and in some applications manufacturers have been outstanding applications.
The method is as follows: the diameter of the rolling bearing of the hollow shaft device of the mill is thickened; the thin oil cooled by the hollow shaft transfers the temperature of the hollow shaft to the bearing to a normal range below 60 degrees.
The advantages of this type of housing are as follows:
1. Thin oil is smoother than grease smooth; the friction coefficient of the bearing is minimized; the power saving effect is better.
2. The normal working temperature of the bearing; the temperature of the bearing is smoother than that of the dry oil; the service life of the bearing is extended.
3. The lower seat of the bearing is equipped with oil level investigation oil mark; the operator can see the oil level bump at any time; it can make up the oil quantity in time; avoid the smoothness due to lack of oil; avoid the occurrence of bearing damage.
4. The oil chamber of the bearing housing contains oil; the outer diameter of the rolling bearing of the equipment can be reduced (under the premise that the equipment inlet and outlet equipment meets the strength and torque); the hollow shaft and the inlet and outlet spiral barrel end face are provided with a flange; The spiral cylinder flange is connected. The hollow shaft is made of thick and thin end face; a compression bearing inner ring flange is provided; the bearing axial direction is prevented from being thrown out.
The second advantage is that the outer sleeve of the bearing is removed; the dust is prevented from entering the bearing housing; the excellent oil quality is adhered to; the service life of the bearing is ensured; and the work is safe and reliable.
The third advantage is that the diameter of the rolling bearing is increased; the diameter difference is formed with the uniform outer diameter of the hollow shaft; the smooth room is selected for the thin oil; the oil level is improved; the thinning oil spill has received a certain effect.
The fourth advantage is that the diameter of the hollow shaft of the rolling bearing is thickened; the radial spacing between the rolling bearing and the inlet and outlet spiral cylinder is increased; it has a certain effect of heat insulation and cooling. The cooling and extension life of the bearing Must play a role.

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