The concrete crusher is a specialized device designed for crushing concrete, construction waste, and similar materials. It achieves medium and fine crushing by subjecting materials to compression, shearing, and grinding through two counter-rotating rollers.

concrete crusher

With its simple structure, flexible adjustment capabilities, and eco-friendly operation, the concrete double-roll crusher is an ideal solution for construction waste recycling and aggregate production. Users can select different configurations (such as hydraulic adjustment or diesel power) based on specific requirements and ensure proper maintenance to extend service life.

Below is a comprehensive overview of this equipment:

1. Concrete Crusher Working Principle

The concrete double-roll crusher employs two high-strength, wear-resistant alloy rollers rotating in opposite directions. Materials entering the gap between the rollers (V-shaped crushing chamber) undergo compression, shearing, and grinding forces, being crushed to the desired particle size before discharge through the outlet. When encountering excessively hard or non-crushable materials, the rollers automatically retreat via hydraulic cylinders or springs, widening the gap to protect the equipment.

2. Concrete Crusher Core Structure and Features

Roller Design: Roller surfaces come in two types—smooth and overlay-welded. Smooth rollers suit fine crushing with feed sizes <80mm and discharge sizes 1-10mm; overlay-welded rollers suit medium-fine crushing with feed sizes <150mm and discharge sizes 5-30mm.

Adjustment Mechanism: Roll gap is regulated via wedge devices or hydraulic/spring systems to control output particle size.

Drive Configuration: Dual-motor drive utilizing V-belts or couplings; diesel or gasoline engines can be substituted in power-deficient environments.

Environmental Performance: Low noise and minimal dust emissions comply with national standards; select models feature scrapers to prevent material adhesion on wet feed.

3. Applicable Materials and Industries

Material Range: Solid materials with compressive strength <250MPa and moisture content <35%, such as concrete, construction waste, limestone, and pebbles.

Industrial Applications: Mining, building materials, metallurgy, chemical, and construction sectors, particularly suited for highway aggregate and recycled concrete processing.

4. Performance Advantages

High Efficiency & Energy Savings: High throughput, low power consumption, high crushing ratio, uniform final particle size with high cubic content.

Exceptional Durability: Ultra-wear-resistant roller liners last 6 months to 5 years, minimizing maintenance costs.

Flexible Operation: Adjustable discharge size (e.g., 2-30mm) to meet diverse requirements.

5. Selection and Operation Considerations

Selection Guidelines: Choose models based on material hardness, moisture content, and production requirements; prioritize brands with robust after-sales support .

Operating Procedures: Inspect equipment before startup; initiate operation under no-load conditions before feeding material; perform regular bearing lubrication (using grease lubrication); prevent oversized materials from entering the system.