How long to replace the oil seal of crushing hammer

Oil seal is also called seal, as the name implies is to play a sealing role, to prevent oil leakage of parts that need lubrication, it belongs to vulnerable parts in the use of crushing hammer, it is recommended that the crushing hammer work 600-800 hours or so, replace a crushing hammer oil seal; When the oil seal is leaking oil, it must stop working immediately and replace the oil seal. If the dust is easy to enter, the piston will be pulled. At this time, the oil seal will drop blocks and other phenomena due to the piston pull.