Crushing and degradation are the greatly using process for industry. It are take up almost 20 % energy output in the country. Share capital, operation and power of costs for crushing and degradation for factories, which are use this process, equal to more 50 % their economics balance. Because cost reduction on crushing and degradation is actual tasks. Main structural layouts of jaw crushers and their tendencies in the contribution.

A symmetrical crusher with two self-synchronizing vibration exciters is considered.