The capacity of a jaw crusher refers to the amount of material it can process per unit time (typically measured in tons per hour, TPH). The capacity depends on several factors, including:
Key Factors Affecting Jaw Crusher Capacity:
1. Feed Opening Size – Width and depth of the crushing chamber.
2. Closed Side Setting (CSS) – Minimum gap between the jaws at the bottom (determines output size).
3. Material Hardness & Density – Harder or denser materials reduce throughput.
4. Feed Size Distribution – Larger feed sizes may require more crushing strokes.
5. Eccentric Shaft Speed (RPM) – Higher RPM increases capacity but may affect product size.
6. Crushing Stroke & Jaw Design – Deep vs. shallow chambers influence efficiency.
7. Moisture Content & Stickiness – Wet or sticky materials can clog the crusher.
Typical Capacity Range:
- Small jaw crushers (~10–50 TPH)
- Medium jaw crushers (~50–300 TPH)
- Large industrial jaw crushers (~300–1,500+ TPH)
- Feed opening: 36″ × 24″
- CSS: 4″
- RPM: 250
- Efficiency factor: ~0.25
Estimation Formula (Rule of Thumb):
\[
\text{Capacity (TPH)} = \text{Width (in)} \times \text{Closed Side Setting (in)} \times \text{Speed (RPM)} \times \text{Efficiency Factor}
\]
(Efficiency factor varies based on material and machine design.)
Example Calculation:
For a jaw crusher with:
\[
\text{Capacity} ≈ 36 \times 4 \times 250 \times 0.25 ≈ 9,000 \, \text{lbs/hr} \, (\approx \, 4.5 \, \text{TPH})
\]
Tips for Maximizing Capacity:
✔ Optimize feed size distribution (pre-screening helps).
✔ Maintain proper CSS and jaw plate condition.
✔ Avoid overfeeding to prevent choking.
✔ Use scalping feeders for consistent material flow..jpg)
Would you like help selecting a jaw crusher based on your specific material and production needs?
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