What's Carrier Roller / Top Roller?
They also have different shapes, some people also just called them Roller......
What's the use of Carrier Roller / Top Roller?
Carrier Roller is to support track chain, like its name " Carry", carries track chain to move on so the track chain has a certain degree of tension.
What's the structure of Carrier Roller?
There are shafe, bearing, cover, roller shell, sealing, very simple.
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