14 Cone Crusher Common Problems

Cone crusher has high crushing ratio, high efficiency, low energy consumption, uniform product size, suitable for medium crushing and fine crushing of various ores and rocks. In the cone crusher working process will encounter a variety of problems, So, we provides 14 common fault causes and solutions!

cone crusehr machine

1. The oil temperature is too high.

Cause: The quality of the oil is poor or the oil is insufficient; the bearing is damaged; the ambient temperature is high, there is no cooling water or the cooling water pressure is low; the cooler is clogged.
Solution: change oil or refuel; change bearings; supply cooling water or increase the pressure of cooling water; clean the cooler.

2. Oil temperature and pressure rise.

Cause: The tubing or oil groove is clogged and the safety valve is faulty.
Solution: Stop the machine, check and repair.

3.Oil pressure is low after oil pump is started

Cause: The oil temperature is low; the pipe is blocked or the pump is running abnormally.
Solution: Heat to increase oil temperature; repair pipe or oil pump.

cone crusher

4.Oil contain lots of fine mud and impurities.

Causes: failure of sealing dustproof device; water shortage caused by blockage or leakage of water pipe.
Solution: Sealing or cleaning after shutdown, replacing new oil.

5.There is water in the oil

Causes: water enters the lean oil station; the cooler leaks, and the water pressure is greater than the oil pressure; water supply too much or the return pipe is blocked.
Solutions: Clean oil tank and replace oil; repair leakage or replace cooler, reduce water pressure, clean oil tank and replace oil; adjust water supply or clean water return pipe, clean oil tank and replace new oil.

6.The vibration of cone crusher is too strong.

Causes: Cone crusher base is loosening; Difficult-to-break materials enter the crushing chamber, leading to blockage; parts break or wear; poor lubrication makes the spindle tightened by bushing.
Solutions: fastening bolts, pouring; controlling the type of feed, strictly forbidding the entry of non-fragments; strictly controlling the amount of feed; stopping the machine to check accessories; replacing damaged parts, repairing oil pumps and pipelines.

7. The crushing cone rotates very high.

Causes: oil shortage or dust in oil between spindle and bushing; insufficient clearance of tapered bushing; wear or manufacturing reasons of bowl bearing bush, contact surface deep to inner circle, conical body sinking.
Solutions: overhaul or replace bushings, spindles, etc., and find out the causes of oil shortage, eliminate it; adjust bushing clearance; re-scrape, and meet the requirements.


8. The sudden speed of the moving cone accelerates.

Cause: the sinking of moving cone or the damage of spherical thrust bearing; the movement of conical bushing upstream causes insufficient clearance with the spindle.
Solution: Adjust the gap.

9. Non-uniform rotation of transmission shaft

Causes: serious wear or damage of gears; damage of connection keys; breakage of spindle.
Solutions: stop and replace gears, and make meshing clearance meet the requirements; change the connection keys; change the spindle, strengthen iron removal work.

10. Make splitting sounds.

Cause: the lining plate is loose; the moving cone or fixed cone lining plate is not round and causes impact.
Solution: Stop the machine to check the screw tightening and zinc layer falling off.

11. The coupling rotates and the crusher does not move.

Causes: transmission coupling or gear key break; spindle break.
Solution: disassembly and inspection for renewal; disassembly and inspection for renewal.

12. The drive shaft produces a strong knock.

Causes: Unqualified installation of bevel gears, poor meshing, excessive clearance, too large axial clearance of transmission shaft or gear damage.
Solution: Correct meshing clearance or replace gear.

13. The supporting ring jumps.

Cause: Non-fragments fall into the crushing chamber, and the main shaft is easy to break.
Solution: Strengthen iron pick-up or install iron remover.

14. The size of ore discharging increases.

Cause: Serious wear of liner.
Solution: adjust the outlet, reduce the size of the outlet, and replace the lining plate.


  1. Amos tembo says:

    How do I remove the taper bushing of a 36fc telsmith gyrasphere cone crusher

  2. Christopher says:

    Good day,
    My cone crusher TC-51 (short cone) I found dust in the oil!and it is second time it happened,the first incident I open the cone and changed the socket liner and rubber pipe under the socket sealing ring and it become okay for around a year Until it happened again same problem “oil mixed with dust”again I changed the socket liner,socket sealing ring and rubber pipe and it happened in the third time!when I opened the cone I found out that the mushroom shaft seated on the socket sealing ring instead to seat on the socket liner,Any suggestions or idea regarding this issue?should I need to change the “INNER ECCENTRIC BUSHING” could you please advice on this? Thanks and God bless.

  3. Mia Evans says:

    Thanks for helping me understand that it can be difficult to break materials and can lead to clogging when the cone crusher’s base is loosening. I can imagine how the operator or the owner of the mobile screening plant would have to maintain their equipment well. It can avoid any delays and issues like that to ensure that they deliver their service well to their clients.

  4. Steven says:

    Hi just wondering if anybody can help I have a nordberg hp300 crusher it will run no problem when empty and then soon as she starts getting stone about 10mins later she cuts out I have changed pressure switch and still hasn’t helped

    1. beidoou says:

      Ok, Mr Steven,

      I will ask our engineer reply you about the crusher machine by your email.

  5. Adrian Singogo says:

    The telsmith cone crusher is losing clamping pressure,what could be the problem?

  6. Tumelo says:

    Cone crusher trip by low pressure

    1. Jeffrey Aidoo says:

      I keep getting main clamp pressure faults and low lubrication flow / pressure . I will be grateful if you can suggest a possible solution to my cone crusher . Mccloskey telsmith crusher

  7. Nabam Vijay says:

    What is the normal lubricant pressure for 250TPH propel cone crusher

  8. Jason says:

    Cone crusher won’t clear, electrical is fine. Any ideas?

    1. beidoou says:

      Maybe you need to adjust the cone crusher inlet and outlet parameters according to the change of material

  9. Jarvis says:

    380x cone crusher. Raised to clear to empty out… it won’t come back down. The open/ close switches work along with clear button. So hyd works. Turn on delivery belt and pull the lube/ hyd button to bring cone down…. hyd won’t engage. Changed the contacts on the pull button. Nothing. Swap soil nods no go.

  10. Precious says:

    My cone crusher is constantly stopping. It shows no fault or tripping on the soft starter. When you start it again it runs OK then stop itself after some time. What could be the possible causes

    1. beidoou says:

      Hello Precious,

      The cone crusher can not be restarted immediately when it stops suddenly, so as to avoid secondary damage to the cone crushing production line. First of all, you should find out the reasons for the sudden stop of the cone crusher, there are 5 common reasons:

      1. The discharge port of the cone crusher is blocked, too much or uneven feeding will lead to the blockage of the discharge port, resulting in excessive production load of the crushing machine, resulting in the fracture of the fuse and lead to shutdown.

      2. Sudden shutdown may also be caused by too low or too high voltage, unstable voltage or easily forcing the cone to break self-protection resulting in shutdown. So be sure to check whether the voltage is normal before turning on.

      3. It may be the eccentric shaft problem, the eccentric shaft fixed bushing loose or falling will lead to no gap between the bearing housing and the frame, resulting in the eccentric shaft can not operate, so the cone crusher will stop suddenly.

      4. Is the belt tightness is not enough, the belt is too loose will make the belt skid, can not provide sufficient power, resulting in downtime.

      5. It may be that the bearing is burnt out, and the damage to the bearing will make the whole equipment unable to work properly.

      For the 5 reasons, we should do the following before turning on the cone crushers:

      First of all, before starting up, check to see if there is any residue in the tapered discharge opening, clean it up immediately, and pay attention to control the feeding evenly, not too much or too little.

      The second is whether the belt tightness is appropriate, reasonable adjustment to prevent too tight or too loose. In addition, pay attention to the voltage situation to maintain the stability of the voltage.

      Finally, pay attention to daily maintenance, bearing is extremely important, to do a good job of lubrication, reduce wear.

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