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Jaw Crusher's common malfunction and its remedy There will appear a variety of failure in Jaw Crusher's daily use ,here we list some common faults and their remedies: Jaw Crusher common symptom1:a suddenly stop of the host (commonly known as: boring car). Reasons:1)the block of discharge port lead the sealing; 2)the loose of rotation of the belt driving sheave rotating make the belt slip; 3)eccentric shaft bush sleeve is loose, causing the rack bearing no gaps in both sides, so that the eccentric shaft stuck, unable to turn; 4)workplace voltage is too low, which causes the host encounter aniseed,and the inability broken; 5) bearing damage. Remedy:1)removing obstruction of the discharge opening to ensure the smooth flow of materials; 2)tighten or replace belt; 3)to re-install or replace the bush sleeve; 4)align the workplace voltage to conform to the requirements of the host operating voltage; 5)replacement bearing. Symptom 2:the host sheave and moving jaw functioning normally, but broken cease work. Reasons:1)tension spring break; 2)rod fracture; 3)off or broken of the bracket Remedy:1)replace tension spring; 2)replace the rod; 3)to re-install or replace the bracket Symptom 3:stunned Crusher spring break. Reason: emphasis on small Jaw Crusher discharge opening with the spring tention. Remedy: Replace the spring. Symptom 4:flying sheave shaft swing. Reasons:1) flying sheave shaft hole slot, flat key or shaft wear and loose in coordinating; 2)stone rolling into the inside of the wheel result in cracking of the flying sheave wheel shell; 3)casting defects; 4)flying sheave expansion sleeve looses. Remedy:1)flat key wear, replace the flat key, or replace the eccentric shaft or fly wheel slot; 2)by doing flying tank round shield and replace the eccentric shaft or fly wheel slot; 3)replace the eccentric shaft or tank round. 4)Re-tight set up sleeve Symptom 5:there is beating and crash sound in the process of moving or fixing the jaw plate . Reasons:1)fastening bolts of jaw Crusher's jaw plate loose or falling; 2)jaw Crusher's discharge opening is too small lead the bottom two jaw plates hit each other. Remedy:1)fixed or installed for tight bolts; 2)align the nesting population to ensure that the correct gap between two jaw plate. Symptom 6:the fracture of bracket. Reasons: 1)Jaw Crusheยงr host overload or materials whose size is greater than the size of feeding mouth enter in; 2)non-broken material enter the crushing chamber; 3)It's not parallel between toggle and toggle pad and skew exists; 4)jaw crusher castings appear more serious casting defects. Remedy: 1)replace the toggle and control the size of the feed, and prevent overloading the host; 2)replace the Toggle and take measures to avoid non-broken material entering the crushing chamber; 3)replace the Toggle and the worn toggle pad, install the toggle correctly; 4)replace into qualified Toggle.


Symptom 7:Adjusting Toggle seat broken. Reasons: 1)They purchase or restructure of the toggle and toggle pad themsrlves,which does not meet the design requirements of OEMs; 2)fixed bolts of the adjusting toggle seat loose; 3)There are serious casting defects or welding defects of the adjusting toggle seat Remedy: 1)replace the adjusting seat and replace into OEMs original assembly bracket, bracket pad; 2)replace the adjust seat and tighten the adjust seat bolt; 3)the replacement of the adjusting toggle seat. Symptom 8: the temperature of the frame axle-bearing or in the movable jaw is too high. Reasons: 1)Lack of grease; 2)grease stains; 3)bearing clearance is not suitable or the bearing contact is not good; 4)bearing damage. Remedy: 1)by adding the right amount of grease; 2)cleaning the bearings and replace grease; 3)Adjust bearing's tightness or trim the bearing and bearing pad in the use of pads; 4) the replacement of bearings Symptom 9; rear of the rack produce percussion sound. Reasons: 1)the rod is not tighten, the bracket hit the movable jaw and the toggle plate of the adjust seat pad; 2)friction exists between the rod and the lower jaw hook; 3)the spring and spring seat strike each other. Remedy: 1)fasten the rod; 2)Check whether the spring tension is valid or not,if not replace the spring,tighten the rod and re-tighten the spring; 3)install the spring seat and tighten the nut of the rod to the right position. Symptom 10: jaw crusher frame serious beating. Reasons: 1)anchor bolts loose or broken; 2)balance weight block of the flying sheave deviate its position; 3) the host without solid foundation and isolation measures. Remedy: 1)tighten the anchor bolts or replace broken bolts; 2)remove the cover plate fly wheel slot, Loosen the fly wheel slot expansion sleeve bolts,adjust the position of the flying sheave balance weight block, then tightening up expansion sleeve bolts; 3) reinforce base, padded sleepers or rubber, etc. Henan Hongji Mine Machinery Co., Ltd§ is a reputed manufacturer and joint-stock enterprise with import & export rights of China . We have been cooperating with domestic and foreign scientific research institutes for a long time and established a testing base with domestic and foreign techniques .we have built into a comprehensive enterprise that comprises R&D, test, manufacture, sales and service functions.We mainly produce large and medium-sized mining machinery§, metallurgy machinery and building material equipment§,such as jaw crusher§, impact crusher§,sand making machine§,rotary dryer§ .Our products are sold all over the world!Welcome to visit our factory,and to test machine. http://www.chinahongji.com§ offers


The common malfunction and its remedy of Jaw Crusher