One of the most frequent questions we receive at Baichy Machinery is: "Can this crusher handle my rocks?" The answer, as with most engineering questions, is: it depends on the crusher type. Choosing the right equipment based on your raw material size is not just a suggestion—it's a critical operational requirement.

The Golden Rule: Feed Opening vs. Feed Size

Before diving into specific models, there is a universal rule in the crushing industry. The maximum feed size should generally not exceed 80-85% of the crusher's feed opening width.

1. Jaw Crushers: The Big Eaters

Jaw crushers are designed as primary crushers. Their job is to take the "run-of-mine" (ROM) raw blasted rock and reduce it to a manageable size for secondary crushers.

• Small Models (PE-400×600)Max Feed: 340mm
• Medium Models (PE-750×1060)Max Feed: 630mm
• Large Models (PE-1200×1500)Max Feed: 1020mm
• Baichy Giant SeriesMax Feed: Up to 1200mm+

Baichy Tip: If your blasted rock is predominantly larger than 1000mm, you may need a specialized primary gyratory crusher or a hydraulic hammer breaker before the jaw crusher.

2. Impact Crushers: The Shapers

Impact crushers (like the PF series) are typically used for secondary crushing of softer to medium-hard materials (limestone, coal). They excel at creating a cubic product shape.

Because they rely on the kinetic energy of blow bars hitting the stone, the feed size is more restricted than jaw crushers.

• Standard Impact Crushers: Typically process stones between 300mm and 500mm.
• Heavy Duty Impact Crushers: Can occasionally handle up to 800mm if designed with a large intake, but this increases wear significantly.

3. Cone Crushers: The Hard Rock Specialists

Cone crushers are the workhorses for secondary and tertiary crushing of hard, abrasive materials like granite and basalt. They are precision machines.

Summary Table

Conclusion

Selecting a crusher isn't just about output capacity; it starts with the input size. Overloading a small crusher with large stones is a recipe for downtime. At Baichy Machinery, we engineer our crushers with generous feed openings and robust toggle plates to handle the tough realities of quarry life.