Product Overview

The double roll crusher is designed for medium and fine crushing of a wide range of raw materials. Material is crushed by compression between two counter-rotating rolls. The compressive strength of the feed material should not exceed 800 kg/cm². With its rational design and simple structure, the machine is widely used for sampling and laboratory analysis in coal, coking, mining, non-ferrous metal smelting, chemical processing, metallurgy and building-material industries.

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How It Works

Main assembly: The machine consists of the frame and housing, roll assembly, transmission system, drive system and gap-adjustment mechanism.
Power transmission: The motor drives the primary and driven pulleys. Power is transferred through V-belts to the roll shafts, causing the rolls to rotate and crush the material.
Discharge adjustment: The gap between the rolls can be adjusted to obtain the required particle size. After adjustment, the locknut must be tightened. A larger gap generally results in a larger product size and higher throughput.
Crushing process: The roll assembly is the main working component and is manufactured from high-quality carbon steel. Material is metered through the hopper, compressed between the counter-rotating rolls, and discharged through the inclined chute.

Key Advantages

Uniform output with fewer fines

The compression-crushing principle helps preserve the original particle shape, producing fewer needle-like and flaky particles, less fine powder and better particle integrity. It is well suited to premium manufactured sand, laboratory sample preparation and selected ore processing.

Precise and adjustable particle size

The roll gap can be finely adjusted for controlled discharge sizing, allowing easy switching between coarse, medium and fine crushing duties. This supports both graded industrial production and standardized laboratory sample preparation.

Wear-resistant rolls for long service life

The rolls use wear-resistant high-manganese steel with high surface hardness and strong resistance to compression and abrasion. They are suitable for processing a variety of materials.

Simple construction and low maintenance costs

A compact structure, straightforward transmission and reduced parts count help lower the failure rate. The rolls are easy to remove and clean, simplifying routine maintenance and reducing total operating costs.

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Model Selection Guide

Available configurations and technical parameters

Equipment NameModelFeed Opening Size (mm)Max Feed Size (mm)Discharge Size (mm)Power (kW)Overall Dimension D×W×H (mm)Production Capacity (kg/h)Weight (kg)
DoubleRoll Crusher200*7570*13130.5-32.2630*410*800100-200150
DoubleRoll Crusher200*125120*13130.5-33770*480*1000100-300180
DoubleRoll Crusher200*150130*13130.5-33770*500*1000200-400190
FullyEnclosed DoubleRoll Crusher200*7555*13130.5-32.2850*500*1000100-200220
FullyEnclosed DoubleRoll Crusher200*150110*13130.5-33850*550*1070200-400260
FullyEnclosed DoubleRoll Crusher250*150110*15150.5-34900*600*1150300-500300

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