The jaw crusher serves as the primary crushing unit in most sand and aggregate production lines, offering high efficiency and robust performance. Its simple structure, low maintenance, and adaptability to various materials (granite, basalt, limestone) make it indispensable. Key components include the fixed/movable jaw plates, eccentric shaft, and toggle plate.
Below are typical specifications for mid-range jaw crushers:
| Model | Feed Opening (mm) | Max Feed Size (mm) | Capacity (t/h) | Power (kW) |
|————-|——————-|——————–|—————-|————|
| PE-600×900 | 600×900 | 480 | 60-140 | 75 |
| PE-750×1060 | 750×1060 | 630 | 110-250 | 110 |
| PE-900×1200 | 900×1200 | 750 | 220-380 | 160 |
Q1: How to reduce jaw plate wear?
A: Rotate or replace plates periodically; avoid feeding overly hard materials like quartzite without pre-screening.
Q2: What causes uneven output size?
A: Worn jaw plates, improper CSS (closed-side setting), or inconsistent feed distribution.
A granite processing plant in Malaysia deployed a PE-750×1060 jaw crusher as the primary stage, achieving a throughput of 200 t/h with a CSS of 150 mm. The final product (0-40 mm) fed into a cone crusher for secondary crushing, optimizing overall efficiency by 30%.
For abrasive materials, manganese steel jaws (18% Mn content) are recommended to extend service life beyond 6 months under heavy-duty conditions. Regular greasing of bearings and tension rod adjustments are critical for sustained operation.
