Small mobile jaw crusher hourly output parameter introduction
Small mobile jaw crusher, also known as portable jaw crushing plant, integrates feeding, crushing and conveying functions. It features flexible mobility, compact structure and low transportation cost, widely used in construction waste recycling, small quarry, road engineering, mountain stone processing and other scenarios. Hourly output is one of its core performance indicators, which is affected by raw material property, feeding size, closed-side setting, operation condition and equipment configuration.
1. Typical Hourly Output Range by Model
表格
| Model Specification | Hourly Output (t/h) | Max Feeding Size (mm) | Main Application |
|---|---|---|---|
| 250×400 mobile jaw crusher | 5–20 | 210 | Small site, concrete waste crushing, laboratory test |
| 300×500 mobile jaw crusher | 10–30 | 250 | Construction waste, river pebble, limestone |
| 400×600 mobile jaw crusher | 20–40 | 340 | Medium small quarry, highway base material processing |
Note: The above data is the rated capacity under standard working condition (crushing limestone, bulk density 1.6t/m³, continuous uniform feeding). Actual production will fluctuate.
2. Key Factors Affecting Hourly Output
- Raw material characteristics Hardness, moisture content and viscosity matter greatly. Soft limestone is easy to crush and achieve high output; granite, basalt with high Mohs hardness will reduce hourly capacity. Wet & sticky materials may cause blockage of crushing chamber and discharge port, dropping production efficiency.
- Feeding size & feeding uniformity Oversize raw materials lead to frequent biting failure inside jaw cavity and lower throughput. Uneven feeding (overfeeding or intermittent feeding) will cause equipment overload or idle running, unstable hourly output.
- Closed-side setting (CSS) CSS refers to the minimum gap between movable jaw and fixed jaw. Smaller discharge gap produces finer finished aggregate, while hourly output decreases accordingly; larger CSS gains higher output but coarser product size.
- Supporting configuration Matched feeder, belt conveyor and screening system determine continuous operation. If the feeding or conveying capacity cannot keep up with jaw crusher, the whole line output will be restricted.
- Equipment maintenance status Worn jaw plates, loose toggle plate and poor lubrication will reduce crushing force and working efficiency, resulting in lower hourly throughput.
3. Reference Tips for Parameter Selection
- If you need high hourly yield and do not require fine finished stones, choose larger CSS and larger model.
- For construction waste recycling, consider material impurity and moisture, reserve 15%~25% redundancy on the theoretical hourly output.
- Mobile jaw crusher usually works with mobile cone crusher or mobile screen to form a complete crushing line. The hourly output of the whole system is determined by the bottleneck equipment.
4. Common Misunderstanding
The parameter marked on equipment brochure is theoretical hourly output, not constant actual output. Many customers only refer to the nominal tonnage while ignoring raw material hardness and discharge requirement, which leads to the actual production failing to reach the expected value.