Impact Of Moving Jaw Damage

Impact Of Moving Jaw Damage

The movable jaw is a broken part of the jaw crushing organ. Once it is damaged, it will seriously affect the normal production, but it is generally of large quality, complex manufacturing, and can not be changed simply after damage. It should also be repaired by various means, otherwise it will fail frequently.

The common damage forms of Construction Waste Crusher jaw are: inner hole wear, spring rod hook broken and local crack or overload fracture. Today we mainly analyze the first two forms.


For the medium and small Construction Waste Crusher, there are two forms of assembly of the inner hole of the movable jaw: one is to install the bushing bushing in the hole, and the two is to install the rolling bearing in the hole. After the wear of the pasteurized bushing, the spare bushing can be replaced, and then the bushings of the barn alloy are repaired or re poured.

Because of fretting wear, improper installation or long-term operation, the outer ring loosening and inner bore wear of rolling bearings are often encountered due to fretting wear, and the repair methods include two kinds of inner hole repair welding and inner hole bushing.

1, Inner Hole Repair Welding

The inner hole repair welding is to manually weld the same or similar material on both ends of the inner hole by manual arc welding, then reexpand the hole, and the reaming technology must be carried out according to the accuracy of the design.

2, Inner Bore Inserting Sleeve

The inner bore is boring first, and then a special sleeve is set in the hole to compensate for wear and tear. Finally, it is processed to the basic size according to the requirements.

The method of inserting the inner hole to repair the moving jaw is very suitable for the moving jaw of cast iron, though the technology is complex, and when the internal bore wears again, the repair process can be greatly simplified by replacing the inner sleeve.


In addition, due to casting defects or due to fatigue, overload, and so on, fracture occurs sometimes. For the cast steel movable jaw, the manual arc welding method can be used to repair and solve the problem, and the cast iron movable jaw can be fitted with a hook.

Construction Waste Crusher is a powerful crushing machine. Parts will inevitably be worn or damaged in operation. Proper control of repair methods will help reduce production costs and improve the service life of equipment.

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