You want more tons per hour. Every mine boss wants this. We are SBM, a top manufacturer. We know how to help you. Increasing jaw crusher capacity is not magic, it is science. We use data from journals like Minerals Engineering. We also use our 30 years of site work. This guide helps you get more output. It is simple to read. It has real tips. We show you how to lower costs too.
Do not put rocks that are too big into the pit. This is a big mistake. The feed size must be right. It should be 80% of the opening size. We call this the Gape. If rocks are too big, they block the jaw. The machine stops. You lose time.
Why: Big rocks cause bridging. Bridging stops flow. Correct size keeps material moving fast.
Data: Keep max particle size < 0.85 x Gape.
Keep the crushing chamber full. This is Choke Feeding. Do not trickle feed. Trickle feeding is bad. It wears out the bottom of the plates. Choke feeding uses “stone on stone” crushing. The weight of rocks on top helps crush rocks below.
Why: It spreads wear evenly. It makes capacity higher. It makes product shape better.
The Nip Angle is the V-shape angle. It is between the two jaw plates. Standard angle is 18 to 22 degrees. If the angle is too big, rock pops out. We call this “popcorning”. It is dangerous. It lowers output. If the angle is too small capacity drops.
Why: Good angle grips rock. Rock breaks faster. SBM adjusts this perfectly.
CSS is the gap at the bottom. It decides the product size. If CSS is too tight, production drops. Fines build up. You must balance the CSS. Check the user manual. SBM machines have hydraulic assist. It makes changing CSS fast.
Why: A wide CSS passes more rock. But rock is bigger. You must find the sweet spot.
| CSS Setting (mm) | Capacity (t/h) | Power Load (%) |
|---|---|---|
| 50 | 65 | 85 |
| 75 | 105 | 80 |
| 100 | 150 | 75 |
Jaw plates wear out. This is normal. But uneven wear is bad. It changes the Nip Angle. It reduces the grip on stone. Check the tooth profile. If teeth are flat, flip the plate. SBM plates are reversible. This doubles the life.
Why: Worn plates slip. Slipping rocks do not break. Throughput goes down fast.
Do not crush dust. It is a waste of power. Use a grizzly feeder. It sits before the crusher. It removes small stuff. Small stuff falls through bars. Only big rocks enter the jaw. This is very smart.
Why: Fines take up space. They cause packing. Removing them boosts capacity by 15%.
The speed matters a lot. Fast is not always best. Hard rock needs specific speeds. Soft rock needs different speeds. If it is too fast, rock cannot fall. If it is too slow, production lags. SBM engineers calculate this for you.
Why: Gravity pulls rock down. The jaw pushes rock up. Timing must be perfect.
Look at the amp meter. It tells a story. High amps mean hard work. Low amps mean empty chamber. Aim for steady power. SBM motors are strong. They handle spikes. But consistent feed keeps power stable.
Why: Spikes trip breakers. Stops kill production. Steady power equals steady tons.
Teeth shapes vary. Some are sharp. Some are round. Sharp teeth are for soft rock. Round teeth are for hard rock. Choose the right one. SBM offers Corrugated, Wide, and Heavy duty. The right shape grabs rock better.
Why: Better grip means less friction. Less friction means more crushing force.
Machines are iron. Humans are brains. A good operator listens. They hear odd noises. They see feed changes. They react fast. Bad operators ignore signs. They break machines. SBM offers training. We teach your team.
Why: Skilled staff prevents downtime. They keep the machine full. Efficiency goes up.
This is a huge pain. It stops everything. Usually, feed is too big. Or the discharge is full. Maybe clay is sticky? Clay sticks to plates. It builds up.
Solution: Clean the clay. Use water spray. Or change the cavity shape. SBM C6X series has a deep cavity. It clears material fastly. No blocking.
Crushing takes power. But waste costs money. Worn liners use more power. They grind, not crush. Also, belt tension. Loose belts slip.
Solution: Tighten belts. Change worn parts. Use SBM energy motors. They save 10% electricity. This helps your profit.
The Problem: The client had an old machine. It was slow. Only 150 tons per hour. The rock was very hard granite. Hardness was 200 MPa. They lost money on power.
The SBM Solution: We visited the site. We studied the rock. We installed the SBM PEW860 Jaw Crusher. It has a hydraulic setting. We set CSS to 100mm. We added a vibrating feeder.
The Result: Production jumped. It hit 350 tons per hour. The client was happy. “SBM changed our business,” said the site manager. “The machine eats rock fast. No downtime.” Maintenance dropped by 40%.
The Problem: Basalt is abrasive. It eats steel. The client changed plates every week. This is too costly. The downtime was killing them.
The SBM Solution: We suggested Mn18Cr2 plates. These are high manganese. We optimized the flywheel speed. We slowed it down slightly. This gave better crushing action.
The Result: Liner life doubled. Production went up 20%. The plant runs smooth now. The client bought a second unit. SBM support team checks in monthly.
It depends on the rock. For soft limestone, maybe months. For hard granite, maybe weeks. Check the wear pattern daily. SBM parts last longer. We use special alloys.
On old machines, no. You must stop. It takes hours. On SBM hydraulic crushers, yes. You push a button. It takes minutes. This is safe. It keeps production high.
Grease bearings every shift. Check bolts weekly. Inspect toggles monthly. SBM gives a checklist. Follow it strictly. Good care means long life. It protects your investment.
Increasing capacity is possible. You need the right tips. You need the right machine. SBM is here for you. We are manufacturers. We build strong crushers. We supply parts. We design flows. Do not settle for low output. Contact us today. Let us build a plan for you.
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Email: [email protected]
Address: No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
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