Mobile Primary Impact Crusher (HSI) — M-PDK Series

The Mobile Primary Impact Crusher combines a feeder hopper and a primary horizontal-shaft impact (HSI) crusher on a single chassis. It accepts 0-1200 mm feed, delivers 0-70 mm cubical product and works at 80-500 t/h. It accepts larger feed than a jaw and gives high reduction in one pass.

Working principle

The blow bars on a horizontal rotor throw material against breaker plates; reduction is by free impact, not compression. This principle can combine the primary and secondary stage in one machine; the unit is single-chassis and towed by one truck.

Technical specifications

Feed 0-1200 mm · Product 0-70 mm · Crushes limestone/dolomite (brittle) and basalt/granite (hard).

Material and application

The ideal field is low-silica, brittle rock such as limestone and dolomite, where the HSI gives up to 20:1 reduction and long blow-bar life. In high free-quartz basalt/granite the impactor works but wear accelerates sharply; a jaw primary plus cubicizer/cone secondary is then recommended. Blow-bar choice follows the material: high-chrome white iron for clean-abrasive feed, manganese/martensitic where tramp iron is a risk.

Bridge to a full plant

For a full gradation see Mobile Crushing Plants, and for selection see the 'jaw vs impact' guide. Request a quote for model and pricing.