How to replace the bearing of vertical roller mill

The bearing is one of the parts that are relatively easy to wear in the vertical roller mill parts, so it is necessary to master the method of replacing the bearing in daily work. The following is a summary of the work of Shuguang Heavy Industry based on nearly 30 years of production experience, hoping to help users in need.

1. Turn the roller device out;

2. Check the end gap of the grinding roller bearing;

3. Remove the vertical roller mill roll sleeve and shaft assembly from the grinding head;

4. Lift the vertical roller mill parts to a convenient location for maintenance;

5. After removing the vertical roller mill parts in turn, pull the inner ring of the lower bearing out of the grinding roller shaft;

6. Lift the vertical roller mill grinding roller bearing seat away from the grinding roller shaft. At this time, the upper and lower bearing outer rings remain in the bearing housing;

7. Pull out the inner ring of the upper bearing and the outer ring of the upper and lower bearings with appropriate tools;

8. Re-install the bearing

(1) After the relevant parts are installed, the inner ring of the upper bearing is mounted on the shaft of the grinding roller, and the bearing can be heated, but the temperature must not exceed 90 ° C (heated with an oil bath).

(2) Freeze the upper and lower bearing outer rings, and the freezing temperature should be at least -15 °C. Install the outer ring of the bearing into the hole at both ends of the bearing housing, keep it in place, and let it return to temperature.

(3) Mount the bearing housing on the grinding roller shaft and sit on the upper bearing. Install the inner ring of the lower bearing onto the shaft of the grinding roller. If it is heated, the heating temperature must not exceed 90 °C.

(4) Fit the bearing retaining ring and tighten the screws by hand. Rotate the bearing seat in the forward and reverse directions not less than 5 turns to make the bearing position.

(5) Remove the bearing retaining ring and measure the difference between the end of the shaft and the end of the inner ring of the lower bearing. Install the spacer set on the end face of the shaft.

(6) Fit the bearing retaining ring and fix it. Install the remaining parts and turn the grinding roller in.

(7) Add an appropriate amount of lubricant to the housing.

Factory Address: Longjiang West Road, Shangjie District, Zhengzhou City

Contact number: +86-371-67666660 676667

Mobile phone: 0086 13523465141

After-sales Service Department: 0371-67666667