| 1. Identify the Material | Rock type, recycled concrete, asphalt, limestone, gravel, or mixed demolition waste | Hard, abrasive rock generally requires more robust wear protection; asphalt and concrete may require different chamber and operating settings. | Material hardness, abrasiveness, moisture, and shape affect wear rate, power demand, and product quality. | Confirm the material’s hardness, abrasiveness, maximum lump size, and moisture content before comparing machines. |
| 2. Match the Required Capacity | Target throughput in metric tonnes per hour (t/h) | Portable crushers commonly serve applications from small, intermittent projects to several hundred t/h; actual output depends on feed, settings, material, and feeding consistency. | A nominal capacity rating does not guarantee the same production rate in every application. | Choose a machine whose verified operating range exceeds the required average output, while allowing for downtime and material variation. |
| 3. Check Feed Size and Product Size | Maximum feed size, desired discharge size, and required particle gradation | Jaw crushers are commonly used for primary reduction; cone or impact stages are often used when a finer or more cubical product is required. | The feed opening and closed-side setting determine whether the crusher can accept the material and produce the required size. | Compare the largest feed lump with the feed opening and verify the expected product-size distribution, not only the minimum setting. |
| 4. Evaluate Mobility and Site Access | Transport method, site dimensions, ground conditions, and setup frequency | Tracked units can move around many job sites; wheeled units may be practical where road transport and prepared surfaces are available. | Transport height, width, total weight, turning radius, and ground pressure can determine whether the machine can reach and operate at the site. | Measure access routes, bridges, ramps, working platforms, and loading areas before selecting the chassis type. |
| 5. Compare Energy and Operating Costs | Power source, fuel or electricity availability, and expected operating hours | Diesel-hydraulic systems offer site flexibility; electric or hybrid systems may reduce local emissions and can lower energy costs where reliable power is available. | Total cost depends on energy use, wear parts, labor, transport, maintenance, and utilization—not just purchase price. | Request fuel or electricity consumption under comparable material, throughput, and operating conditions. |
| 6. Plan for Dust, Noise, and Safety | Worksite regulations, nearby buildings, water availability, and operator protection | Dust suppression may use water sprays or other controls; guarding, emergency stops, safe access, and lockout procedures are essential. | Crushing generates airborne dust, noise, vibration, and stored mechanical energy that require engineered controls and safe procedures. | Verify applicable occupational, environmental, noise, and transport requirements before mobilization. |
| 7. Review Serviceability and Wear Parts | Maintenance access, replacement parts, technical support, and expected wear rate | Jaw plates, blow bars, liners, belts, bearings, and screens are normal wear or service items; replacement intervals vary substantially by material and operating practice. | Fast inspections and parts availability reduce unplanned downtime and help maintain consistent product quality. | Compare inspection access, changeout procedures, parts lead times, service coverage, and documented maintenance intervals. |