Lump Breakers

Greater reliability, efficiency and agglomerate size reduction performance than any other lump breaker available.
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Lump breakers, also referred to as lump crushers, are required particle size reduction equipment for most material handling systems. They operate by introducing agglomerated product through an opening in the top of the unit. The lump breaking happens when the product’s particles that are too large are crushed by the rotating blades as they pass through a set of stationary comb-like blades. The agglomerated product particles continue to be reduced in size until they are small enough to pass through and discharge below the unit.

A common application for our lump breakers is to reduce deliberately compacted materials or natural agglomerations which often occurs during production, storage or shipping.


This uniquely designed lump breaker (cake breaker/flake breaker) improves product flow for a variety of applications while reducing product agglomeration for an all-around easy means of reducing compacted materials.

Easy installation and maintenance, make this a simplistic product for businesses of all sizes and types. At Prater, we construct only the most versatile equipment and our lump breakers are no exception. It can process an extensive array of materials, including chemicals, minerals, salt, sugar, ceramic powders and more.

Design features include easily replaceable rotating and fixed blades, a heavy-duty single-shaft rotor driven by a V-belt, and strategically drilled air purge seals.


Our engineers have designed and manufactured a Lump Breaker that is easier and safer to clean and maintain than traditional lump breakers.
This lump breaker was designed following the lessons we learned with our Quick-Take-Apart series of Rotary Airlock Valves. It features tool-less access end-plates and a rail system that allows for both the heavy end-plates and the rotor assembly to easily and safely slide out of the unit without any additional handling of the components.

Why Choose a Prater Lump Breaker?

Prater Lump Breakers are functional, economical and designed to tear through most materials and reduce them down in size as small as 1/16” without generating excessive dust. Our Lump Breaker design is proven to provide a simple and efficient process of reducing compacted materials into a smaller and controlled granulated product allowing for more efficient and effective product handling by downstream equipment. Prater Lump Breakers reduce downtime, increase performance, and improve product quality over other available lump breakers and crushers.

It is no surprise, with industry-leading reliability such as counter-rotating dual shafts, outboard bearings, and a direct coupled drive, that companies around the world are taking advantage of the many benefits associated with using our innovative lump breakers in their line of processing equipment.

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