EV™ Hammer Impact Crusher

The proven and reliable FLSmidth EV™ Hammer Impact Crusher is a cost-effective solution for processing abrasive and moderately sticky raw materials in one stage

FLSmidth EV-crusher
  • The basics

Key benefits

  • Single stage crushing
  • Reduction ratio up to 1:100
  • Excellent control of finished product
  • Capacity up to 2500 tph
  • Requires little floor space and installation height
  • Hammers remain serviceable down to 70% of their initial weight
  • Using a gear unit instead of a V-belt drive facilitates maintenance 

How it works

The EV™ hammer impact crusher reduces quarry size limestone boulders to mill feed in only one reduction, giving a reduction ratio of 1:100. The hammer rows are fitted in a staggered arrangement to give complete coverage across the outlet grate. The hammer assembly provides several points of attack on the raw materials, increasing the overall efficiency of the impact crusher.

The crushed product has a relatively high proportion of fines and more of the comminution work is therefore moved from the less energy efficient raw mill to the more energy efficient impact crusher. 

The horizontal feed system

The EV™ hammer impact crusher accepts coarse feed blocks, as it incorporates two shock absorbing inlet rollers. The inlet rollers accurately control the feed to the crusher and ensure a smooth and even flow of material.

Whether one or two inlet rollers are used depends on the method of feeding the crusher.

Adjustable outlet grate

The grate ensures a consistent flow to the conveyor and protects it against any sudden impact of material leaving the crusher at high speed.

It effectively protects subsequent machinery such as reclaimers, sluices and mills against operational upsets and mechanical damage.

Easy to service and maintain

The top part of the impact crusher can be opened by means of hydraulic cylinders – facilitating access to the crusher interior.

The hammers are symmetrically shaped and can easily be turned to reverse the leading and tracing edges for maximum service life.

The spacing between the hammers and the breaker plate and the spacing between the hammers and the outlet grate can be adjusted to compensate for hammer wear. This allows the hammers to lose up to 30 percent of their original weight without this affecting the required product size curve. 

Hydraulically operated tools for dismantling and fitting of the heavy hammer bolts are included.

The hydraulic cylinders and the hydraulic tools are served by a mobile hydraulic power unit.

A lifting yoke facilitates handling of the hammer rows when changing hammers as well as holds them in position when dismantling and fitting hammer bolts.