Your cone crusher plays a crucial part in your operations, and like the majority of machinery, it may face issues and setbacks throughout its lifespan. Therefore, familiarising yourself with the most common difficulties, and their best solutions, is essential to keeping your machinery and cone crusher parts functioning at optimal performance.
High Oil Temperature
When the oil temperature in your cone crusher rises too high, it could be due to various issues such as poor-quality oil, insufficient oil levels, damaged bearings, high ambient temperatures, low cooling water pressure, or a clogged cooler. To resolve this, consider changing the oil or refuelling, replacing damaged bearings, supplying cooling water or increasing water pressure, and cleaning the cooler.
Oil Temperature and Pressure Rise
A rise in oil temperature and pressure in your cone crusher might be caused by clogged tubing or oil grooves, or a malfunctioning safety valve. Stop the machine, inspect and repair the clogged components, and replace the faulty safety valve.
Oil Containing Fine Mud and Impurities
If the oil in your cone crusher contains fine mud and impurities, it could be due to a failed sealing dustproof device, or a water shortage caused by blocked or leaking water pipes. Shut down the machine, seal or clean the dustproof device, and replace the contaminated oil with new oil.
Low Oil Pressure After Oil Pump Startup
Low oil pressure after starting the oil pump can occur if the oil temperature is too low, if pipes are blocked, or if the oil pump is faulty. Tackle this by heating the oil to increase its temperature, fixing, or replacing the oil pump and restoring, or replacing the blocked pipes,
Splitting Sounds During Operation
Splitting sounds from your crusher could indicate a loose lining plate or a non-round moving or fixed cone lining plate, causing impact and damage. Stop the machine, tighten the screws, and check if the zinc layer has fallen off.
Presence of Water in the Oil
Water in the oil may be due to water entering the lean oil station, a leaking cooler, higher water pressure than oil pressure, excessive water, or a blocked return pipe. To fix this, clean the oil tank and replace the oil, repair or replace the cooler, reduce water pressure, adjust the water supply, clean the return pipe, and use new oil.
Excessive Vibration of the Cone Crusher
Excessive vibration in your machinery may be caused by loose fastening bolts in the base, broken or worn parts, poor lubrication, or feeding difficult-to-break materials. Resolve this by tightening the bolts, controlling the type and amount of feed material, stopping the machine to check and replace any damaged parts, and ensuring adequate lubrication.
Nonuniform Rotation of the Transmission Shaft
Nonuniform rotation of the transmission shaft may result from severe wear or damage to the gears, damaged connection keys, or a broken spindle. Replace the gears, ensure proper meshing clearance, change the connection keys, replace the spindle, and improve the screening process.
High Rotation Speed of the Crushing Cone
If the crushing cone rotates too fast, it could be due to an oil shortage, dust in the oil between the spindle and bushing, insufficient clearance of the tapered bushing, bowl-bearing bush wear, or manufacturing issues. Overhaul or replace the bushings and spindles, address the oil shortage, adjust the bushing clearance, and rescrape the contact surfaces.
Sudden Acceleration of the Moving Cone
Sudden acceleration of the moving cone might be caused by the sinking of the moving cone, damage to the spherical thrust bearing, or insufficient clearance between the conical bushing upstream of the spindle and the spindle. Adjust the gap to fix this issue.
Coupling Rotation Without Crusher Movement
If the coupling rotates but the crusher doesn’t, the issue may be with the transmission coupling, a broken gear key, or spindle breakage. Disassemble the machine to locate and replace the faulty parts.
Strong Knocking in the Drive Shaft
A loud knock in the drive shaft may indicate poorly installed bevel gears, poor meshing, excessive clearance, too large axial clearance of the transmission shaft, or gear damage. Correct the meshing clearance or replace the gear.
Increased Size of Material Output
If the material output size increases unexpectedly, check the liner for severe wear. Adjust and reduce the size of the outlet and replace the lining plate as needed.
Supporting Ring Bounces
If the supporting ring bounces, non-fragments might be entering the crushing chamber, potentially causing the main shaft to break. Improve your screening process to reduce the likelihood of iron and other metals being fed into the crusher and consider installing an iron remover.
Keep Your Cone Crusher Operating at Peak Performance
While cone crushers are designed to handle tough conditions, they can still encounter various problems. By understanding these common issues and working with an experienced equipment provider like Mellott, you can ensure your equipment runs efficiently, maximizing productivity and profitability.
Here at Omnia Machinery, we offer a wide range of quality used quarry equipment such as Jaw Crushers, Cone Crushers, Impact Crushers, Conveyors, Screeners and Shredders. We offer machinery from leading manufacturers such as Sandvik, Kleemann and McCloskey. As with all of our heavy equipment, each machine is thoroughly inspected, tested and serviced before shipment, ensuring you’re supplied with only the best for your project. Browse our quarry machinery here.