5 precautions for installation of tapered bearings in rolling mills and Rolling Mill for Two high openable housing mill with top screw down in China

Rolling Mill for Two high openable housing mill with top screw down Installation sequence

When installing the bearing box, the installation sequence must follow the alphabetical order of the assembly drawing to ensure the best axial and radial load capacity of the bearing.

After the bearing is installed and used for a period of time, when it is off for maintenance

When the E side is installed on the side of the roller body, adjust the side A to the side of the roller body next time the Rolling Mill for Two high openable housing mill with top screw down is installed to make the bearing evenly load and avoid excessive wear of the single row.

After a period of use (one month in the first round), replace the first stress area of the stationary outer ring to make the stationary outer ring evenly stressed, replace the third, fourth, and repeat the first force area replacement.

Rack position adjustment

While adjusting the stress area and installation sequence, the position of the bearing row frame can be changed. The lower roller can be adjusted to the upper roller from the operating side to the transmission side, which also makes the bearing force uniform and shortens the bearing caused by different installation positions. Discrete life, improve the average life and stability of the bearing.

Rolling Mill for Two high openable housing mill with top screw down Seat body, journal

Measure the actual size of the bearing seat to ensure that the bore diameter matches the outer diameter of the bearing within a reasonable range. The bore diameter G7 is recommended

Carefully check the surface of the aperture, the end face, and the key shoulder.

Sandpaper or polishing wheel to remove surface corrosion, burrs, bumps, key end cap end faces, and shoulder end faces.

Rolling Mill for Two high openable housing mill with top screw down Measure the size of the journal to ensure that the inner diameter of the bearing and the journal fit within the specified range, and the shaft diameter tolerance fit is recommended to be f6.

Apply a layer of grease evenly to the journal to facilitate smooth movement of the bearing during installation, protect the roll journal and avoid scratches.

Rolling Mill for Two high openable housing mill with top screw down Hermetic fit

The quality of the sealing effect directly affects the service life of the bearing. A good and effective seal can reduce the probability of abnormal bearing damage. For rolling conditions with a linear velocity below 6m/s, the hardness of the mating surface with the sealing lip is required to be no less than HRC45 The roughness is 0.6um. For rolling conditions with a linear velocity higher than 6m/s and lower than 18m/s, the hardness of the mating surface of the sealing lip is required to be no less than HRC55 roughness 0.4um.