The general relationship between the number of sprocket teeth and the number of chain links

The general relationship between the number of sprocket teeth and the number of chain links

The number of teeth and sections between the sprocket and chain, as well as the power of the whole vehicle and the gear ratio of each gear have been carefully designed before leaving the factory, and are matched according to the best parameters and should not be changed.As for the chain that can no longer be adjusted after it is stretched, it must be replaced, because after the chain is stretched, the length of each segment will become longer, which will be greater than the distance between the teeth of the sprocket. The meshing with the sprocket is not good, and the chain will "bite" during the rotation process, not only the noise will increase, but also the wear will be aggravated, and the tooth pitch between the new chain and the old sprocket will not match well. , the new chain will wear out quickly when used together, so it is best to replace the sprocket with the chain.In addition to the quality of the chain, improper adjustment of the chain has a lot to do with the chain stretching too fast. If the chain is adjusted too tightly or is often in a state of poor lubrication, its life will be shortened.The relationship between the number of sprocket teeth and the number of chain links generally follows the relationship between the number of large and small sprocket teeth and the number of chain links.

比如小轮14,大轮45 ,链条118,这样有个好处就是,不管是大轮还是小轮,它们中的任何一个齿都肯定有机会楔入链条中的任何一节,这样就能够使链轮与链条达到均衡磨损,不会造成其中某一齿或某一节的偏磨现象.使链轮运行平稳和谐.如果我们把链轮静止时,其中小轮的一个齿设为A,它对应的一个设为A1,大轮的一个齿设为B,对应的一个节设为B1, 那么象上面这样的齿节数的链轮,链条要转630圈才能回到A与A1,B与B1都对应的状态.而这时小轮已转过5310圈.它的每个齿都经过每个节45遍,大轮转过1652圈,它的每个齿都经过每个节14遍.之后又开始重复.

如果是小轮15,大轮40,链条120,那么,小轮中的每个齿都只能经过链条中的固定的8个节,其它节它一辈子都无法达到.大轮中的每个齿都只经过链条中的固定的3个节,其它节它一辈子都无法达到.链条只转一圈,便开始重复了.就会有偏磨现象发生.容易损坏.

Of course, if the number of teeth of the two wheels will not be co-prime, the problem is not big, the key is that the number of teeth and the number of chain links must be co-prime