In the event the engagement concerning chain and sprockets gets defective or any factor that brings about excessive decline during the strength of your chain happens, change the entire chain. When any of your following circumstances occur during the chain you use, change the entire chain to maintain security.
Whenever a chain is worn close to the “Elongation limit of chain” .
?Whenever a flaw or crack occurs within a plate.
?When a flaw or crack or defective rotation of the roller is observed.
?When a chain link is stiff.
?When a pin has become rotated.
?Whenever a pin is bent or otherwise deformed or when a plate is seriously warped.
?When rust buildup prevents smooth bending on the chain.
?When diluted sulfuric acid or any other corrosive materials is deposited.
In case you can not judge no 
matter if a flaw is “harmful”, please consult us.
Replacement of sprockets and the way to purchase
The existence of sprockets is generally various occasions the existence of a chain, but if the teeth are worn mainly because of inadequate lubrication or broken since of a shock load, etc., the sprockets should be replaced.
?When placing an order, please specify the next if the chain No. is acknowledged.
1. Chain No. and amount of strands
2. Type of sprockets
3. Shaft hole diameter (d) (This really is not necessary in case you drill this hole; in this case, drill a hole not exceeding the utmost shaft hole diameter.)
4. Number of teeth
5. Hub diameter (DH) and length (L) (within the situation of non-standard sprockets)
6. Whether the tooth heads are hardened
Specify the following things, if your chain No. is unknown
1. Tooth thickness (T)
2. Root diameter (DB) (Caliper diameter (DC) in the situation of odd-number teeth)
Timing of sprocket substitute
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