The HD-20 planer is the main equipment of Taigang Machinery Plant and undertakes large-scale planing tasks. Since it was put into production in 1958, it has been in operation for more than 30 years and the parts have been seriously worn. After repeated inspections and replacement of worn parts, the condition of the equipment has improved, but the problem of oil leakage has not been solved. A machine (180kg) of oil can be added to the machine every week to operate normally. This not only consumes a lot of oil, but also affects civilized production.
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