Horizontal Shaft Impactor Has Versatile Crusher Design

A horizontal shaft impactors (HIS) is capable of high ratio size reduction with no decrease in quality of the product, even after long periods of operation. High size reduction ratios offer cost savings in handling, maintenance, and wear parts.

Reduction ratios of up to 30 to 1 are achievable in a single stage. Product size is varied by changing rotor speed and the clearances between rotor breaker bars and apron breaker plates. The size reduction takes place along short fracture lines producing a more cubical product to meet aggregate specifications. This fast impact fracture is different from the slow compression breaking in cone or jaw crushers that produce more slabby or flat material (5 to 1 length to height ratio). Unlike hammermills, the open discharge impactor has no screens or grates holding material inside the crusher, so material is efficiently processed at high rates for low costs. Design simplicity offers safe and easy access for rotor breaker bar replacement and access to all areas of the crushing chamber. Horizontal shaft impactors are capable of size reduction of all types of material sizes and hardnesses, with minimal maintenance and excellent cubical particle size distribution control.

A GrandSlam HSI crusher is available for testing at Stedman’s testing and toll processing facility. More than 10,000 other size reduction equipment tests are on file to help a process be as efficient as possible.

Stedman Machine Co., Aurora, IN 800-262-5401 www.stedman-machine.com

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