Roll Crushers

LAARMANN roll crushers deliver reliable and controlled size reduction of mineral, ore and rock samples with minimal fines and dust production — ideal for laboratory and pilot plant workflows.

For more than a decade, LAARMANN Rolls Crushers have set the benchmark for performance, reliability, and consistency in sample preparation. Their proven designs have been refined through years of real-world application, giving users complete confidence that the technology has truly stood the test of time. Engineered for fast and efficient sample throughput, these crushers deliver an excellent reduction ratio while maintaining uniform particle size distribution. Precision-machined components and robust construction ensure smooth operation, long service life, and minimal maintenance. At the same time, carefully selected wear materials and thoughtful design minimize sample contamination, preserving the integrity of every test result. The result is a dependable, high-performance crushing solution that meets the demanding requirements of modern laboratories and industrial environments.

LMRC100 Roll Crusher


Compact roll crusher for controlled size reduction of materials in laboratory and pilot environments.

  • Feed size*: 30 mm
  • End-fineness*: < 1 mm

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LMRC100 roll crusher

LMRC200 Roll Crusher


Roll crusher designed for repeatable, uniform crushing with adjustable gap settings for consistent output.

  • Feed size*: 30 mm
  • End-fineness*: < 1 mm

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LMRC200 roll crusher

*depending on feed material and instrument configuration / settings

Roll Crushers FAQ (Frequently Asked Questions)

Roll crushers are used to reduce the size of rocks, ores and minerals by compressing the material between two contra-rotating rolls, producing a controlled particle size with minimal generation of dust and fines, ideal for sample preparation workflows.

Yes. they are designed for many minerals, ores and rock types in laboratory and pilot environments and can handle a broad range of material sizes with controlled reduction performance.

Roll crushers are commonly used in mineral labs, pilot plants, mining test programs and material testing labs to prepare samples prior to further analysis or milling operations.

Jaw crushers apply impact and shear forces to break material, while roll crushers compress material between rotating rolls. Roll crushers typically produce a tighter size distribution with fewer fines and lower dust production, making them suitable as a secondary crusher after primary reduction steps.

Choose based on:
  • Feed material type and hardness
  • Desired final particle size
  • Throughput requirements
LAARMANN roll crushers offer adjustable gap settings for fine-tuned size control to match your lab or pilot plant needs.

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