1. Manual lubrication

　　This type of lubrication by means of oil can an brush, which adding lubricant into the gat between outer and inner link plate of conveyor chain loose side periodically is not very safe and therefore this type lubrication only suitable for those chains with occasional operation or for those secondary drives and low chain speeds. Sufficient lubrication should take place at least once a day. Lubrication colouration should be avoided as far as possible.

　　2. Drip lubricaton

　　Drip lubrication by means of wick oilers, needle oilers or drip oilers is only suitable for low bearing pressure drives. Lubricant colouration should be avoided as far as possible.

　　3. Oil bath lubrication

　　There is just enough oil in a proper chain box for preventing the worn and elongated chain knocking against the casing wall to allow the chain plates to submerge in the bath up to the rollers or the bushings respectively. But immersion should not be too deep or too shallow . Too shallow immersion lubrication is not reliable. Too deep immersion may cause the oil to heat up and lead to untimely oxidation of the oil.

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