| 摘要 |
PROBLEM TO BE SOLVED: To provide a roll bearing device, that is light and tough, low in water absorption, has no risk of decay, is easy to wash when dirty, is excellent in shock absorbing performance, has no anisotropy in strength, costs less in facility investment when compared with injection molding, and totally and sufficiently meets performance requirements as a bearing device, and a roll unit using the same. SOLUTION: The roll bearing device 12 to be provided on each side of the roll 1 for bearing each end part of a center core 2 for supporting the roll 1 in a hanging state is formed of expanded polyolefin. COPYRIGHT: (C)2008,JPO&INPIT
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