How to troubleshoot a cone crusher when it stops working?

May 28, 2025

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Jenny Zhang
Jenny Zhang
Product Tester and Quality Assurance Specialist at Peilan International Trade. I ensure that every product meets the highest standards before it reaches our customers, reflecting our commitment to quality control.

A cone crusher is a vital piece of equipment in the mining and aggregate industries, used to reduce large rocks into smaller, more manageable sizes. However, like any complex machinery, it can encounter issues that cause it to stop working. As a trusted Cone Crusher supplier, I understand the frustration and downtime that can result from such problems. In this blog post, I will guide you through the process of troubleshooting a cone crusher when it stops working, helping you get it back up and running efficiently.

Hammer CrusherEuropean Jaw Crusher

1. Initial Checks

Before delving into more complex troubleshooting, start with some basic checks. First, ensure that the power supply to the cone crusher is intact. Check the circuit breaker or fuse box to see if any breakers have tripped or fuses have blown. If so, reset the breaker or replace the fuse. It's also important to verify that the crusher is properly connected to the power source and that all electrical connections are secure.

Next, inspect the conveyor belts that feed the cone crusher. A blocked or jammed conveyor can cause the crusher to stop. Look for any obstructions on the belts, such as large rocks or debris, and remove them carefully. Make sure the belts are running smoothly and that there are no signs of damage or excessive wear.

2. Hydraulic System Inspection

The hydraulic system plays a crucial role in the operation of a cone crusher. It is responsible for adjusting the crusher's settings, such as the closed - side setting (CSS), and for protecting the crusher from overload. If the cone crusher stops working, check the hydraulic system for any signs of problems.

First, check the hydraulic fluid level. Low fluid levels can cause the hydraulic system to malfunction. If the fluid level is low, add the appropriate hydraulic fluid as recommended by the manufacturer. Also, inspect the hydraulic hoses and connections for any leaks. A leak in the hydraulic system can lead to a loss of pressure, which may cause the crusher to stop. If you find a leak, repair or replace the damaged hose or connection.

Another important component of the hydraulic system is the relief valve. The relief valve is designed to open when the pressure in the hydraulic system exceeds a certain limit, protecting the crusher from damage. Check if the relief valve is functioning properly. If it is stuck open or closed, it can cause issues with the crusher's operation. You may need to consult the manufacturer's manual or a professional technician to adjust or replace the relief valve.

3. Lubrication System Examination

Proper lubrication is essential for the smooth operation of a cone crusher. The lubrication system reduces friction between moving parts, prevents wear and tear, and dissipates heat. If the lubrication system fails, it can cause the crusher to overheat and stop working.

Check the oil level in the lubrication system. Low oil levels can lead to insufficient lubrication, which can damage the crusher's bearings and other components. If the oil level is low, add the recommended lubricating oil. Also, inspect the oil filter. A clogged oil filter can restrict the flow of oil, reducing the effectiveness of the lubrication system. Replace the oil filter if it is dirty or clogged.

Monitor the oil temperature. Excessive oil temperature can indicate a problem with the lubrication system or the crusher's operation. If the oil temperature is too high, it could be due to a lack of oil flow, a malfunctioning cooling system, or excessive friction in the crusher. Check the cooling system to ensure that it is working properly and that there are no blockages in the cooling lines.

4. Crushing Chamber Inspection

The crushing chamber is where the actual crushing process takes place. If there is an issue in the crushing chamber, it can cause the cone crusher to stop working.

Inspect the crushing chamber for any signs of blockage. A large piece of rock or debris may have become stuck in the chamber, preventing the crusher from operating. Use appropriate tools to carefully remove any blockages. Be cautious when working in the crushing chamber, as there may be sharp edges and moving parts.

Check the wear parts in the crushing chamber, such as the mantle and concave. Over time, these wear parts can become worn out, which can affect the crusher's performance. If the wear parts are severely worn, they may need to be replaced. Refer to the manufacturer's guidelines for the recommended replacement intervals and procedures.

5. Drive System Analysis

The drive system of a cone crusher consists of a motor, belts, and pulleys. If there is a problem with the drive system, the crusher will not be able to operate.

Inspect the drive belts for any signs of damage or excessive wear. A worn or damaged belt may slip, causing the crusher to lose power. If the belts are worn, replace them with new ones. Also, check the tension of the belts. Proper belt tension is crucial for efficient power transmission. Adjust the belt tension according to the manufacturer's specifications.

Examine the motor. Check if the motor is running smoothly and if there are any abnormal noises or vibrations. A malfunctioning motor can cause the crusher to stop. If you suspect a problem with the motor, it may be necessary to have it inspected and repaired by a qualified electrician.

6. Electrical Control System Check

The electrical control system of the cone crusher is responsible for regulating its operation. If there is a problem with the control system, the crusher may stop working.

Check the control panel for any error messages or warning lights. The control panel can provide valuable information about the status of the crusher and any potential issues. Refer to the manufacturer's manual to interpret the error messages and follow the recommended troubleshooting steps.

Inspect the electrical wiring in the control system. Loose or damaged wiring can cause electrical shorts or disrupt the flow of power to the crusher. Make sure all the wiring connections are secure and that there are no signs of damage.

7. Contacting the Manufacturer or a Professional Technician

If you have gone through all the above troubleshooting steps and still cannot determine the cause of the problem or fix it, it may be time to contact the manufacturer or a professional technician. As a Cone Crusher supplier, we have a team of experienced technicians who can provide you with technical support and assistance. We can offer remote troubleshooting, on - site repairs, and replacement parts to get your cone crusher back in operation as quickly as possible.

In addition to our Cone Crushers, we also offer other types of crushers, such as the European Jaw Crusher and the Hammer Crusher. These crushers are designed to meet different crushing requirements and can be a valuable addition to your mining or aggregate operation.

If you are in the market for a new cone crusher or need to replace parts for your existing one, please do not hesitate to contact us. Our sales team is ready to assist you with your purchase and answer any questions you may have. We can provide you with detailed product information, pricing, and delivery options.

Conclusion

Troubleshooting a cone crusher when it stops working can be a challenging task, but by following the steps outlined in this blog post, you can systematically identify and resolve many common issues. Remember to always prioritize safety when working on the crusher, and if you are unsure about any aspect of the troubleshooting process, seek professional help. As a reliable Cone Crusher supplier, we are committed to providing you with high - quality products and excellent customer service. Visit our website Cone Crusher to learn more about our products and services.

References

  • Manufacturer's manuals for cone crushers, European jaw crushers, and hammer crushers.
  • Industry standards and best practices for crusher maintenance and troubleshooting.
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