REVIEW: vertical mill is the core of cement production line, while the roller is one of the most important vertical mill grinding element. Nissan 5000t large vertical mill assembly process, the key to this process when installing the roller and precision bearings. Nissan 5000t large vertical mill is designed for an unprecedented sebang large cement production line, a perfect match for the device assembly process is one of the main reason for its large production volume. The production line design vertical roller mill grinding double row tapered roller bearings and single row cylindrical roller bearing assembly configured. Is the core of the roller bearing, the shaft and bearings, and wheels are interference fit, require the installation of clearance is less than 1mm.

 

So, how will the quality of heavy grinding roller assembled as required, and to accurately measure the gap between the double row tapered roller bearings for? How will the interference fit double row tapered roller bearing spacers successfully removed in order rubbed margin gap? The large vertical mill grinding roller bearing installation is the key to the roller assembly, it is accurate to install a direct impact on the operation of the mill stand performance, affect the roller bearing life, even to the productivity of the entire cement production line

 

Installation preparations:

We must first understand the structure of vertical roller mill grinding, the role and relationship of the various components, familiar grinding roller assembly drawings, parts diagram, understand the relevant technical requirements, proper installation method and order; second, finishing the work site to ensure the assembly process dust and moisture; and finally, to check the parts are complete, the assembly of parts, tools for cleaning, remove the part of the burrs, rust, chips, oil, categorized and placed well assembled with components, adjusting assembly platform benchmark.

 

Detection of bearing mounting clearance:

The grinding roller flipped horizontally 180 ° and ensure the hub cap end down; rotating hub located at the bottom of the roll axis, one end of the rollers in contact with one end in contact with the wheel, adjust the initial value of 3.00mm; lifted by driving rollers , so that the rollers rotating hub located at the uppermost portion of the hub; to ensure the accuracy of the data, the bearing spacer height rubbed preload amount, the amount of preload desirable experience 0.14mm.

When producing 5000 tons of large vertical roller mill grinding bearing installation process has been successfully applied in various cement production line. Customer feedback, the performance is very good vertical mill operation. I hope you can help.