The products includes five series: crusher, sand making machine, powder grinding mill, mineral processing equipment and building materials equipment.fatigue. The breaker must be at a 90&176; angle to the face of the rock. (D)Blank-firing Blank-firing the breaker without the tool pressing on a rock causes the energy that normally travels out the tool into the rock (8)to impact the retainer pins (9) and front head causing excess stress to these components..
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