| 摘要 |
PURPOSE: A roller for tracks is provided which has a simple structure, allows assembly and disassembly by easy and quick operation. CONSTITUTION: A roller comprises a support shaft(2) including two coaxial shaft parts and a center collar(5), at least one support bearing tube(12) disposed on the shaft part on one side of the collar(5), and a tube-like shell(17) formed with side surfaces(20,21) for a link of a truck. The shell(17) surrounds a cavity(16) for putting the bearing tube(12) and the shaft together, the cavity(16) is closed at the opposite ends by seal devices(33,34) disposed between the bearing tube(120 and closing covers disposed in opposite end parts of the shaft, and the collar(5) and at least one bearing tube(12) are fixed inside the cavity(16) between an inside shoulder of the cavity and a shaft retaining unit(23) of the bearing tube(12) tightly installed to the tube-like shell(17).
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