During the transfer, the work roll with bearings is placed on the receiving table, with the bearings suspended relative to the tables. Then, the tables for lifting-lowering the bearings move until the gap between the inner bearing ring and the roll journals is loosened. The bearings are fixed on the table. After that, the bearing mounting-disassembly tables move apart until the bearing housing with the bearing clears the work roll's journals. The stand has two workstations. The work roll from one receiving table is removed by a crane for grinding. Meanwhile, another roll can be placed at the adjacent workstation, allowing assembly of the roll after moving to the free zone (if the bearings are in good condition).
Main Technical Requirements for the Stand Design
- Assembly program and capacity – 4 work rolls per day.
- Assembly performance – 4 work rolls per hour.
- Required functions of the stand:
- Mounting bearings on textured work rolls;
- Disassembly of bearings during repair or regrinding of rolls.
- Type of table drive – hydraulic.
- Design placement of equipment – bay.
- Load capacity of the stand – 8 tons (weight of two rolls and two bearings).
- Operating temperature of the stand - +5…+40°C.
- Maximum height of the stand – 1300 mm.
- Maximum width of the stand – 1800 mm.
- Maximum length of the stand – 6000 mm.
- Lubrication system for friction units – manual.
Technical Specifications of Work Rolls and Bearings:
- Work roll length – 3100 mm.
- Work roll length assembled with bearings – 3769 mm.
- Bearing height – 407.5 mm.
- Bearing width – 1076 mm.
- Weight of the work roll without bearings – 2695 kg.
- Weight of the work roll assembled with bearings – 5000 kg.
