Early and old types rolling mill stands were different from modern mill stand. Usually spherical roller bearings were installed onto the roll neck, meeting the production requirements at that time. However, it became outdated with more and more  problems as steel mills have higher demand for rolling mill delivering speed.

• No  cost for upgrading without changing the rolls and bearing housing
• Maintaining the production requirements of carrying loads of production requirements

★ Minimizing the roll run-out with interference fit of bearing inner ring and roll neck

★ Allowing higher radial loads and higher rolling speed

★ Higher precision of steel products

★ Convenient for mounting and dismounting, with separated and interchangeable inner

     rings and outer rings

★ Reducing rolling mill downtime and maintenance