... Even granularity,Simple structure ,Good reputation, Super service Rock crusher, rock breaker,coal equipment: Big reduction ratio,Even granularity ... as slag, ore iron, construction materials, marble, etc.crusher for sand making characteristics:1. firm structure, stable performance, ... speed of main shaft (r/min)PEF150×25012510-401.6-52857.5922×745×933700PEF200×30016520-703-13265111056×1100×1120800PEF250 ...