TERTIARY IMPACT CRUSHER. Designed for crushing soft and medium-hard materials with close grain distribution and cubical products, tertiary impact crushers are an excellent solution in the production of fine aggregates for concrete and asphalt applications. Adjustable and interchangeable breaker plates enable size reduction up to 50 percent with.Crushers Specifications Engineering360. Find Crushers on GlobalSpec by specifications. Industrial Crushers reduce large rocks into smaller rocks, gravel, or rock dust. Crushers may be used to reduce the size, or change the form, of waste materials so they can be easily disposed of or recycled, or to reduce the size of a solid mix of ra.