return rollers with spaced rubbers rings

1.It is applied to remove the stick materials on the return side belt. 2.Keep the belt clean. 3.long life-span

Structure of Standard idlers:

Shaft: Accurate shaft will be made of special machining mechanism

Pipe: Rollers are made of accurate pipe with state-of roundness and straightness to ensure well-balanced rotation.

Ball-Bearing: Optimum fit given between ball bearing,shaft and housing ,based upon years of experience.Ball bearing provided with C3 group of clearance.ZZ shield deep-groove to ensure a nice fit and off-set any expected temperature rise during operation by means of internal clearance.

Housing : Housing made of deep-drawn material ,cast on accurate mould ,and will be automatically welded to pipe simultanenity at both sides .Rigid and mono-block structure so produced ensures to make it free from any looseness between pipe and housing or breakage ,resultantly provide with satisfactory durability for high-speed conveyer susceptible to expected big impact during opetation. 

Labyrinth Seal: The particular labyrinth seal structure excogitated in our company is of non-contract type,and so durable and has less rotation-resistance and long life-span as to be of optimum structure.particularly for a long-distance and large capacity conveyer for bulk material .It is approved from the testing of national authoritative organizative organization and NC Company that Seal employed is of dustproof and waterproof type ,whose performance proved to be satisfactory and has by a long way exceed the GB and JIS standard after our repeated research and development.

 

return rollers with spaced rubbers rings