| 摘要 |
<p>PURPOSE: An expansion belt mandrel is provided to workability by accurately maintaining the center of a shelf or the other equipment using a large belt. CONSTITUTION: An expansion belt mandrel comprises a center tubular core(1), a first round metal plate(3), a second round plate(5), an O-ring(7) and a bolt(8). The first round metal plate is attached to the tubular core. The second round plate adheres to the tubular core. The second round plate has the home channel processing to concentric to be contiguous to the inner surface of the inner circumferential portion. The O-ring is settled within the home channel.</p> |
