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Customer Support
Grinder
Symptoms of failure Parts of failure Method of inspection Cause of the failure Knack of action Knack of action
Operation was out of control (disconnected) Switch Check the switch ON/OFF and the damage Foreign body mixing Cleaning and foreign body removing Cleaning
Decrepitude (exceed the endurance limit) Modifying and replacing the switch Exchanging the switch
Damage according to impact
Check the left and right rotation and the change of speed
Socket damage and omission
Code Check whether the code is disconnected Disconnection according to the abnormal tension of the part of code clip occurred when moving Modifying and replacing the code section Exchanging the code
Code gnawed phenomenon caused by careless use when operating
Code socket damage and omission
Switch connection Check the switch socket connection and damage Code lead wire socket damage and breakaway Reconnecting lead wire, modifying and replacing the socket Switch connecting picture
Connecting method failure
Stator lead wire socket damage and breakaway
Soft starter Check the soft starter connection and damage Soft starter socket damage caused by overload
Damage according to impact Replacing soft starter Exchanging soft starter
Amateur Check the disconnection of the amateur coil Coil burn-out thermic in overload caused by excessive operation Replacing amateur Exchanging amateur
In case of operation overrun rated using time
Coil damage according to inserting the foreign body Cleaning and replacing
Stator Check the disconnection /burn-out of the stator coil Burn-out stater caused by overload according to excessive operation Replacing stator Exchanging stator
Operation exceed the rated using time
Coil damage according to the insert of foreign body Cleaning and exchanging
Stator lead wire connection part damage
Carbon brush Check if carbon brush is able to connect with the amateur Use exceeding the carbon brush abrasion limit line Replacing carbon brush Exchanging carbon brush
Spring operation failure according to the assembling failure
Amateur commutator part contact failure by inserting the foreign body to the brush holder Cleaning and exchanging
Check whether or not the wanted of inserting carbon brush to the brush holder
Interference Amateur, Stator Check the interference of amateur and stator Amateur, stator not duly reach to the housing Modifying and replacing Exchanging amateur
Stator and amateur core failure Exchanging stator
Bearing In case of bearing abrasion and damage In case of abrasion and damage according to using exceeding bearing part endurance limit Replacing bearing Exchanging bearing
Processed goods, Projected goods Check the processed goods, projected goods bearing's duly reaching part abrasion condition and the processed goods bearing's duly reaching part abrasion condition(gear cover, housing, packing grand) Bearing injection part's distance between shelves size failure Separately replacing in case of each part's abrasion occurred Exchanging housing, gear cover, packing grand, amateur
In case of bearing injection part's abrasion according to using exceeding endurance limit of each processed good/projected goods
Louver packing Check the louver packing damage, abrasion, insertion Damage and being pressed down in case of inserting louver packing (assembling failure) Modifying and replacing  
Vibration Amateur Check the bending and be stabbed of the A/R shaft Exchaning the wheel with putting drivers between the fans through carelessness in case of exchaning the wheel of consumer Replacing amateur Exchanging amateur
Check the bending of the amateur fan Shape transforming
Bearing Check whether the bearing is worn out and damaged Check whether the code is disconnected Replacing bearing Exchanging bearing
In case of bearing damaged
Processed goods, Projected goods Check the processed goods,projected goods bearing's duly reaching part abrasion condition and the processed goods bearing's duly reachingpart abrasion condition (gear cover, housing, packing grand) In case of each part's processed goods decrepit Separately replacing in case of each part's abrasion occurred Exchanging housing, gear cover, packing grand
Bearing injection part's size of distance between shelves failure
And so forth Whether or not the stone is quivering Abnormal warping occurred caused by humidity dry Replace wheel&wheel nut to real honest parts Exchanging cap
Iin case of wheel nut processing failure (check floor plan) Wheel damage occurred Exchange wheel & wheel nut to real honest parts
Louver packing omission In using wheel defective good (fixture) Louver packing assembling Exchanging drill chuck
Flame Failure Carbon brush flame Brush holder's quivering An external diameter of amateur commutator being scratched phenomenon and transforming Replacing amateur Exchanging amateur
Severe carbon brush damage and abrasion
Carbon brush spring elasticity lose Using exceeding the carbon brush abrasion limiting line Replacing amateur/ carbon brush
Flame occurred caused by using the carbon brush failure(equipment)
Flame caused by overheating Check the amateur and the stator are contacted(interfered) Burn-out occurred by overload using Exchanging amateur and stator Exchanging amateur, stator
Coated Films concentricity failure Replacing bearing Exchanging bearing
Flame caused by vibration Check the bearing damaged Bearing damaged by foreign body inserting Replacing bearing Exchanging bearing, pinion, gear spindle
Check the gear, pinion, coated Films worn out Coated Films and Processed goods loose(transforming) occurred Replacing coated Films and Processed goods
Amateur Flame Check the commutator surface's degree of being scratched Commutator being scratched phenomenon Replacing amateur Exchanging amateur
Check the commutator surface's degree of worn out Amateur balance failure
Check whether the amateur core insulating paper is damaged Insulating paper damaged by foreign body(dust) inserting
Stator Flame Check the stator coil worn out Burn-out occurred by overload using Replacing stator Exchanging stator
Check the stator coil insulating paper damage
Brush holder Check the brush holder assembled correctly to the housing less tighten the brush holder volt (M4*10) Tighten the brush holder volt Checking and exchanging the brush holder
Louver packing Check the louver packing being assembled well Louver packing assembling omission and assembling failure (be squashed) Modifying and replacing Exchanging amateur
Damage (be broken) Amateur Check whether the amateur commutator and fan is damaged In using privately made goods Replacing amateur (check with naked eye) Exchanging amateur
In case of exceeding the term of guarantee
Handle Check whether or not the handle (A),(B) are damaged Material failure, external impact, shape alternation Modifying and replacing handle (check with naked eye) Exchanging housinghandle
Bearing Check whether or not the bearing worn out and damaged Decrepitude exceed the term of guarantee Replacing bearing Replacing bearing
Amage when forcibly injecting bearing
Gear, Pinion Check whether or not the gear or pinion chisel part damaged In case of overloading operation exceed the rated using time Replacing gear or spindle Replacing pinion
Decrepitude exceed the term of guarantee Exchanging gear, spindle
In case of material's heat treatment failure
Cap Check the cap damaged and omitted Cap, rock pin being damaged by impact Modifying and replacing Exchanging cap
Press cap during operation
Processed goods, coated Films, Projected goods Check whether or not the processed goods, coated films, projected goods are damaged External impact Modifying and replacing Exchanging housing
In case of material failure
In case of heat treatment failure Exchanging gear cover, packing grand
Sape alternation
Electronics stuffs Check whether or not t he switch, carbon brush, brush holder and soft starter are damaged In case of not working caused by the foreign body inserted to the switch Modifying and replacing Cleaning
In case of tightening fixing bolt of brush holder part too much Exchanging code, switch
In case of using privately made goods of carbon brush Exchanging soft starter
Press, projected goods Check the wheel guide being crushed and damage part In case of consumer careless handling Replacing Exchanging cap
External impact
Noise Amateur Abnormal noise occurred as if 'woong' caused by the amateur fan noise In case of the fan guide assembling omitted Replacing amateur Exchanging amateur
Amateur fan is running idling
Gear, Pinion Check the worn out and damage of the gear and pinion chisel part In case of abnormal using of the term of guarantee (decrepitude) Modifying and replacing Replacing pinion
In case of occurrence of abnormal noise as if the iron is sharpened In case of chisel failure of the chisel part Exchanging gear, spindle
Check the gear injecting condition In case of gear chisel part damage, worn out
Bearing In case of the bearing's worn out and damage In using equipment Replacing Exchanging
In time of abrasion and damaging exceeding endurance limit
Dust seal assembling omitted
And so forth Check the adequate amount of grease existing Noise caused by lack of grease amount Supplement adequate amount of grease Injecting grease
Output(RPM) decline Amateur Check load current Decrepit according to using exceeding endurance limit Replacing amateur Exchanging amateur
Amateur coil failure
Amateur commutator fusing failure
Stator Check whether or not the stator coil burn out according to overload Overload heat splice(coil burn-out) Replacing stator Exchanging stator
Bearing Check whether or not smoothly rotating with being worn out and damaged Insert foreign body Cleaning, replacing Cleaning, exchanging
Being stabbed when assembling Replacing bearing Exchanging bearing
Grease quantity Check whether or not the grease quantity over-injected Grease over-injection (no-load current build-up) Injecting fixed amount of grease Injecting fixed amount of grease
rocessed goods (Coated Films) Check the occurrence of blurring in case of abrasion caused by over use of bearing injecting part Decrepit according to exceeding endurance limit Replacing processed good (coated Films) Exchanging housing, gear cover, packing grand
Bearing injection part distance between shelves size failure (no-load current build-up)
Louver packing Check the louver packing assembling condition Louver packing omission and assembling failure (be squashed) Modifying and replacing Exchanging amateur
Overheating Amateur, Stator Check the interference of the amateur and the stator Failure in case of fastening stator fixing bolt Modifying and replacing Exchanging amateur
In case of the bearing abrasion and damage Exchanging stator
Bearing Check the bearing abrasion and damage Check whether or not be worn out and damaged according to using exceeding endurance limit of the bearing part Exchanging bearing Exchanging bearing
Bearing part dust seal assembling omitted
Grease Check whether or not the grease spread amount adequate In case of lack of adequate amount of grease Injecting fixed amount of grease Injecting grease
Processed goods, Projected goods Check the processed goods bearing's duly reaching part abrasion condition (gear cover, housing, cylinder case, crank case) In case of bearing injection part's abrasion according to using exceeding endurance limit of each processed good Exchanging housing Exchanging housing
And so forth Various parts assembling failure (EX: less tighten) Assembling failure Modifying various part Using observable related measuring instrument
Check the voltage(V) Check whether or not the voltage(V) is rated voltage
Running idle Spindle, Gear Check the running idle of the spindle, gear Spindle, gear processing failure Replacing Exchanging amateur
Gear pinion Check the running idle of the gear pinion Gear pinion heat treatment failure Replacing Exchanging pinion
Gear injecting failure Exchanging gear, spindle
And so forth Check the pinion tighten nut coming loose Coming loose caused by pinion tighten nut shortfall of the clamping force Modifying Exchanging pinion
Amateur Check the commutator damage Using amateur fixture Modifying and replacing Exchanging amateur
Check the amateur coil's stabbed Amateur coil turning failure
Check the foreign body(dust) of amateur coil part Heat releasing caused by foreign body injection
Stator Stator coil is stabbed and the insulating paper is damaged Coil and insulating paper burn-out by heat release caused by foreign body mixing Cleaning and replacing Exchanging stator
Foreign body (dust) Cleaning inadequate
Leakage Carbon brush Mixing the carbon amateur and stator Quality of the carbon brush failure Replacing amateur Exchanging amateur
Cleaning inadequate
Brush holder Brush holder crack and damage In case of tightening fixing bolt of brush holder part too much Replacing brush holder Exchanging brush holder
Check the brush holder socket part Short occurred by loose the socket part (fire phenomenon)
Code Check the code sheath is peeled off Consumer carelessness Modifying and replacing Exchanging code
Check the code socket Code itself failure
Assembling failure when assembling
Switch switch socket failure, damage Check the switch socket damaging and transforming condition Modifying and replacing Exchanging swich
Connection arrangement Check whether the lead wire is squashed Assembling failure Modifying squashed part Check the lead wire squashed by naked eye

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