Buying mining equipment is a big task. Many buyers look to China now. The prices are good. The technology has improved. But there are risks too. You need to know what to look for. This guide helps you find the right supplier. We are SBM. We know this industry. We will share honest tips with you.
China is the world factory. Supply chains are complete here. Steel is cheaper here. Labor costs are lower. This makes equipment affordable. But quality varies a lot. Some factories are bad. Some are world-class. SBM is a top manufacturer. We see the difference every day. You can save 30% to 50% on costs. But you must choose wisely. A bad machine costs more in the long run. High downtime kills profit. So, research is key.
You must know the machine basics. Let’s look at the Jaw Crusher. It is for primary crushing. It works like a mouth chewing. One plate is fixed. The other moves. This movement comes from an eccentric shaft. The stone gets squeezed. This is called compressive force.
We look at the *International Journal of Mineral Processing*. Data shows the toggle plate angle matters. It affects the crushing stroke. A larger stroke means more capacity. But it wears parts faster. You need a balance. We design for that balance.
Technical Key: CSS and OSS
These terms are vital. OSS is Open Side Setting. CSS is Closed Side Setting. OSS determines the throughput volume. CSS determines the product size. You must adjust these often. Our machines make this easy. Hydraulic assist helps here.
Many buyers ignore the cavity type. This is a mistake. The cavity is the space inside. A deep cavity is good. It improves the crushing ratio. The crushing ratio is simple. It is Feed Size divided by Output Size. A ratio of 4:1 or 5:1 is standard.
If the angle is too big, rock slips. The rock pops out. This is dangerous. It also reduces capacity. SBM designs optimized “V” cavities. This ensures the material slides down. It gets crushed effectively. No slipping happens. Efficiency goes up.
Don’t just look at the price tag. Look at the specs. You need to compare apples to apples. Here is a table of what matters. Check these numbers with every supplier.
| Parameter | Why It Matters | Standard Range |
|---|---|---|
| Reduction Ratio | Determines efficiency and stages needed | 3:1 to 5:1 (Jaw), 3:1 to 4:1 (Cone) |
| Motor Power (kW) | Ensures machine doesn’t stall under load | 75kW – 400kW (varies by size) |
| Eccentric Speed (RPM) | Controls frequency of crushing strokes | 230 – 330 RPM |
| Weight (Tons) | Heavier usually means more durable steel | 10t – 80t |
This is a big fear. Downtime is expensive. Reliability depends on materials. Look for high manganese steel. This is usually Mn13Cr2 or Mn18Cr2. It resists wear well. Ask the supplier about their steel grade.
Bearings are also key. SBM uses top brands like SKF or TIMKEN. Cheap bearings fail fast. They overheat. They seize up. Changing a bearing takes days. That is lost production. Always check the component list. Ask for the brand names in writing.
Concrete needs cubical stones. Flaky stones are weak. They break easily. Road projects reject flaky stones. So, how do we fix this? The answer is the crushing principle.
Cone crushers are best for this. Specifically, lamination crushing. This happens when stones crush other stones. It fills the gaps. The result is a cube. Impact crushers also shape well. But they wear out faster. For hard rock, use a cone. For soft rock, use an impactor. We guide you on this choice.
The Challenge: A client in Abuja had hard granite. The silica content was high. It was over 15%. This is very abrasive. Their old machines wore out in weeks. They were losing money fast.
The SBM Solution: We changed the design. We installed a PE-900×1200 Jaw Crusher. Then we added an HPT300 Hydraulic Cone Crusher. We did not use an impact crusher. Impactors cannot handle high silica.
The Data:
– Feed Size: 700mm
– Output Size: 0-5mm, 5-10mm, 10-20mm
– Capacity: 250 Tons Per Hour (TPH)
– Power Consumption: Reduced by 15%
Client Feedback: “The wear costs dropped. The liner life doubled. The shape is excellent. SBM saved our quarry.” The plant runs 10 hours a day. It is stable.
The Challenge: River pebbles are tough. They are round and hard. They are slippery. The client needed sand. High-quality sand is in demand there.
The SBM Solution: We used a VSI6X Sand Maker. This is a vertical shaft impactor. It uses “stone-on-stone” technology. The rocks hit each other. This reduces wear on the metal.
The Result:
– Sand Output: 60% of total feed
– Fineness Modulus: 2.6 (Perfect for concrete)
– Moisture content: <3%
– Profit: ROI achieved in 8 months.
Why it worked: The VSI is designed for shaping. It turns waste pebbles into gold. The client expanded to a second line.
Power must match the task. Under-power leads to blocking. Over-power wastes electricity. It is simple physics. The motor drives the V-belts. The belts turn the shaft.
Calculation example: For hard rock (compression strength > 300Mpa), you need more torque. We calculate the crushability index (Wi). If Wi is high, we upsize the motor. Standard motors fail here. SBM uses motors with high service factors. They handle start-up spikes well.
You buy the machine. Now what? Installation can be hard. China is far away. We solve this. SBM sends engineers. We oversee the foundation building.
Maintenance must be easy. Our machines have hydraulic jacking. You press a button. The top lifts up. You change the liner. No heavy cranes needed. This saves hours. Safety is also better. Workers do not climb inside dangerous spots.
Machines will wear out. You need parts fast. Waiting weeks is bad. SBM has warehouses globally. We stock standard parts. Jaw plates. Mantles. Concaves. Screens.
We provide a “Part Number” book. You just email us the number. We ship it via air or sea. We also offer OEM parts. We can cast parts for other brands too. We use precise molds. The fit is guaranteed.
Cheap machines have hidden costs. Energy is a big one. An inefficient motor wastes power. Over 5 years, this is huge. SBM machines are optimized.
Resale value is another factor. A rusted broken machine is scrap. A maintained SBM machine has value. You can sell it later. This lowers your total cost of ownership. Think long term. Smart investors do.
Check their factory. Video calls are good. See the CNC machines. See the stock. Small workshops have no stock. They build only when you order. This delays delivery.
Check their certificates. ISO 9001 is a must. CE certification is needed for Europe. Ask for test reports. Ask for material analysis sheets. Honest suppliers share these.
Q: Can you customize the paint color?
A: Yes. We are the manufacturer. We can paint it your company color. We offer OEM services.
Q: What is the warranty period?
A: Standard is 12 months. This covers main parts. It does not cover wear parts. We support you for life technically.
Q: How long is the delivery time?
A: For standard models, 20 days. For custom lines, 40-60 days. We ship from Shanghai port.
Sourcing from China is smart. But you must be careful. Focus on specs. Focus on cavity design. Check the references. Don’t just buy the cheapest. Buy the value.
SBM is here to help. We have 30 years of history. We have thousands of cases. We want you to succeed. A successful client buys again. That is our goal. Let’s build your plant together.
Whatsapp：+8617329420102
Email: [email protected]
Address: No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
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