Jaw crusher four branch pipe of oil by adjusting bolt to adjust the flow indicator, if improper adjustment will cause uneven oil each branch points, and some large amount of lubricating oil, some small amount of lubricating oil. When oil supply sufficient usually there is no problem, but in the oil pump malfunction or fuel tank oil level is too low, falling due to the flow of oil will lead to shortage of lubricating oil in some branch. Inadequate oil supply lubrication points appear dry friction or half dry friction, over time, make the jaw crusher bearing wear, temperature, when the bearing alloy melting point temperature is reached, will cause the tile burning failure.
Operating in a common mistake is to put the jaw crusher in every branch of the oil flow to maximum, mistaken for such oil supply state is best, in fact, it has lost the effect of flow control, because of the jaw crusher of each branch resistance is different, small flow resistance is big, big flow resistance is small, so inevitable uneven oil flow.

Accurate method should be observed jaw crusher adjust the discharge flow indicator, can also according to the oil pressure gauge indicates oil flow rate adjustment. When the pressure gauge before adjusting valve, pressure value is proportional to the corresponding branch resistance, high oil pressure show that the branch flow small, should be the big flow, reduce stress, and vice versa.
In addition, still should consider jaw crusher pipeline pressure drop, away from the main branch for tubing pressure should be lower, adjacent to the main branch should be higher for tubing, the size of the pressure difference should depending on the specific situation. Oil flow adjustment are generally not easily change, after exercise in addition to observing oil flow indicator, the oil pressure value at every point is also important parameters.
In order to prevent branch fault caused by the oil pump fault or oil plug oil or oil supply shortage of jaw crusher bearing damage, even cause the tile burning failure, suggest using built-in dry reed pipe YZQ - type II oil flow indicator, indicator in the oil flow interruption or when flow is lower than the safety limit, can be a dangerous state signals, automatically reminder promptly eliminate jaw crusher fault oil supply.

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