The overall performance of the jaw crusher is closely related to the processing and matching dimensions of each part. During the processing of the crusher, it is required to ensure the tolerance range required by the drawings as much as possible, so as to reduce the accumulated errors of the processing and make the assembly quality better improve. Here are four main points to be noted when assembling the bearing of the jaw crusher:
Strictly control the heating process
Because the bearing needs to use the principle of thermal expansion and contraction to achieve an interference fit during the assembly process, the heating process must be strictly controlled, and suitable temperatures for bearings of different specifications and sizes should be selected for heating. The outer diameter of the bearing of the jaw crusher is Φ650 and the inner diameter is Φ400. It is a large bearing. During the heating process, the heating is uneven, which causes the assembly quality to decline. Therefore, we can turn the bearing direction 180 ° and reheat the other side to ensure the bearing Heat evenly.
Bearing installation focuses on skills
During the assembly process, a special copper hammer is made to strike the bearing, and at the same time, the diagonal strike of the bearing is ensured to ensure that the bearing enters the eccentric shaft in a balanced manner. When the eccentric shaft enters the movable jaw, hit the movable jaw with an iron hammer, use the interaction force to install the eccentric shaft into the movable jaw, so as not to damage the bearings on the eccentric shaft. A previous article called How to do jaw crusher bearing replacement work detailed the bearing installation method.
Reasonable bearing lubrication
Use a grease injector to inject grease into the moving jaw, add the grease in the bearing to about 50% of its space volume, and replace it every 3-6 months. Clean oil or kerosene should be used to clean the raceway of the roller bearing during oil change, so that the bearing lubrication is fully and evenly lubricated under the action of heavy load and high temperature, and the service life of the jaw crusher bearing is extended. This article called Precautions for bearing lubrication of jaw crusher details the precautions for bearing lubrication.
Focus on commissioning
Before working, the jaw crusher should be filled with appropriate amount of grease between the thrust plate and the adjustment seat. After idling for a period of time, check whether the working current and voltage are normal and whether the crusher has abnormal noises. jobs. Buffer measures should be taken at the feed port to avoid large stones directly impacting the crusher port. Large stones exceeding the size of the feed port must be blasted twice before entering the feed port.
During the assembly of the jaw crusher bearings, the operation instructions must be strictly followed to reduce the occurrence of bearing burnout, thereby reducing the number of crusher shutdowns and increasing the utilization rate of the crusher.
As a supplier with nearly 30 years' manufacturing, Shuguang Heavy Machinery also produces and sells hammer crushers, impact crushers, vertical shaft crushers, cone crushers, compound crushers, Raymond mills, high pressure mills. Powder machine, vertical mill, ultra-fine grinding machine, ball mill, double-shaft shredder and other heavy equipment crusher. Feel free to contact us for more details.
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