1. If the length of U-shaped screw conveyor is less than 35m it is a single-axis driving screw.
2. If the length of U-shaped screw conveyor is greater than 35m it is a two-axis driving screw.
According to the screw conveyor middle hanger bearing type
1. M1- is a rolling bearing adopts type 80000 sealed bearing and the shaft cap has a dust-proof sealing structure. It is commonly used in areas where it is difficult to refuel no refueling or oil contaminates the material. The sealing effect is good and the hanging shaft has a long service life. Temperature of conveying material ≤ 80°C.
2. M2- is a sliding bearing equipped with a dustproof sealing device a cast copper tile an alloy wear-resistant cast iron tile and a copper-based grate less oil-lubricated tile. Commonly used in the transmission of material temperature is relatively high (t ≥ 80 °C) or transport water containing larger materials.
According to screw conveyor material classification
1. Ordinary carbon steel U-shaped screw conveyors - Mainly used in industries where cement coal stone etc. wear out and there are no special requirements for materials.
2 stainless steel U-shaped screw conveyor - mainly applicable to food chemical food and other industries that have requirements for the delivery environment cleand will not produce pollution on the material the use of a long time but the relatively high cost.
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