This kind of rollers (spiral roller, screw roller) have the following functions:
Enjoying cleaning function
Prevent the materials from stick to the belt
Avoid the belt moving deviation
The rollers/idlers are made from high precision welding pipes and seamless tubes, steel plates and the body of the roller/idler.
The bearing are welded as an integrated one by extrusion and argon guarantee welding, which make the rollers/idlers low resistance coefficient, long lifetime.
The seal of our rollers/idlers are labyrinth seal, which make the rollers/idlers fine waterproof and dustproof.
The concentric design of the roller/idler decreases vibration.
Audited Supplier 
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