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Reversible Hammer Mill

Reversible Hammer Mill

Product Details:


Product Description

Reversible Hammer Mill is our manufactured machine with high grade raw material to ensure high efficiency and smooth functionality. The range of the Reversible Hammer Mill is well known for all the qualitative features of robust construction high output with low power consumption.


Our Hammer Mills are manufactured in three main series which are:

  • 3000 Heavy

  • 4000 Medium

  • 1200 Light

Depending upon the size of feed & toughness of material etc, A particular series-machine is selected.

  • 3000: Big feed size, tough materials like limestone, Iron ore, Dolomite.

  • 4000: Smaller feed size & softer material like soft limestone, chalk. Gypsum etc.

  • 1200: Small Feed size, for friable materials like coal, coke, limestone etc.

Above, all our Reversible Hammer Mills are reversible & open bottom type. We also manufacture Non-reversible ones which are type 2500.


When the feeding stock goes into the beating circle of the rotor it gets caught by the beater heads and then hurled against the impact wall by a series of impacts in small quick succession and thus coarse crushing is effected by the crushing effect of the impact.

The following secondary crushing effects the lower part between rotor and impacting area. When the beater arms with its replaceable beater heads are loosely suspended on the circumference of the rotor. They are in their radical position when they attain full peripheral speed.

The flexible suspension of the beater arms impact on the crusher is rather insensitive to the penetration of foreign material like metals.

The required amount of grain size is modified by co-coordinating and adjusting the grinding wall towards the beating circle of the rotor at the inlet and outlet and at peripheral speed respectively.

Ease of maintenance:

Reversible Hammer Mills are equipped with largely dimensioned inspection flaps allowing at any time a quick inspection of the impact crusher condition inside the machine.

The housing of the impact crusher is divided and can be opened hydraulically or mechanically by spindles on the left and right side of the rotor. Thus all wearing parts (beater heads, beater arms and components of the impact wall) become accessible and may be easily replaced.



The rotor is forged in one piece and bored in a special device to take up the beaters.

Smooth running is ensured by high-precision and perfection in machining and careful balancing of the beater arms, i.e. the beater arms facing each other must be of equal weight.

The beater arm is forged of high-quality steel, The beater head is made of chrome-molybdenum cast steel or compound cast steel,

It features high resistance to wear and can be utilized up to 60% Beater heads connected with the arms by bolts and safety*~springs flexibly and can thus be readily replaced,

Impact wall adjustment

The impact wall adjustment for wear compensation and final grain control may be provided ds the top and at the bottom individually. Adjustment may be effected mechanically by spindles or hydraulically by slave cylinders.

Impact Hammer Crusher opened hydraulically

The final product analysis of the crushed material can be altered by adjusting the distance between the rotating hammer heads and the impact walls. At the same time the adjustment serves for compensation of wear,

On the standard design the adjustment of the impact walls can be carried out while the machine is running by regulating screws on the housing cover, while the lower adjustment is effected by means of a ratchet via a worm gear,

If desired we can deliver the Impact Hammer Crusher with hydraulic adjustment as shown in the sketch.

The hydraulic design offers the following advantages concerning operation and maintenance ;

  • Hydraulic impact wall adjustment.

The grinding walls can be regulated or re-adjusted at the machine by means of control valves; alternatively adjustment can be made in stages from a control station, The actual positions are determined by additional pulses and indicated by corresponding signal lamp.

  • Hydraulically hinged housings.

By this method the casing can be quickly opened. Thus the time for changing the spare parts or the completely equipped rotor will be considerably reduced compared to the standard design,

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