This gage checks the wear-elongation of chains.
Test the chain elongation at a portion that is most
usually engaged with the sprockets (portion almost certainly to be worn).
Once the center of the pin on the chain to get measured
This gage checks the wear-elongation of chains.
Check out the chain elongation at a portion and that is most
usually engaged with the sprockets (portion more than likely to be worn).
When the center of the pin from the chain for being measured reaches the arrow level, it means that the chain has been critically elongated. In this case, substitute the chain.
Make use of the gage to check the wear elongation of the chain.
Standard terms for sprockets
Nominal quantity of sprockets
The nominal quantity of a sprocket will be the similar since the nominal amount of the corresponding chain. One example is, Chains this kind of as 50, 50HK, and 50LD might be engaged that has a sprocket 50. It is actually followed by symbols and characters indicating the number of chain strands, the 
quantity of sprocket teeth, hub variety, tooth head hardening, and so forth.
Diameter of ready hole and shaft hole finishing
A typical sprocket to get a single strand or double strand chain has a shaft hole ready at a diameter stated within the table of dimensions. Whenever you finish the shaft hole, machine it in reference to your outer diameter or root diameter.
Hardening of tooth heads
The teeth of the sprocket must be challenging and dress in resistant because they are impacted when engaged with the rollers of your chain and worn by sliding together with the rollers. When extreme put on and large shocks are anticipated, sprocket.
Kinds, building and materials
made from carbon steel or cast steel should be utilised and high-frequency hardening should really be conducted.
The conventional sprockets forty to 120 that has a hub on only one side for single and double strand chains are induction-hardened whether or not the amount of teeth is small. Whether or not the solution is induction hardened or not is shown while in the tables of dimensions of respective sprockets to your reference. On top of that, inside the following instances, induction-harden the teeth on the sprocket.?The small sprocket has twenty or less teeth and it is used at 1/6 or much more on the greatest pace stated within the table of maximum kilowatt ratings.
The small sprocket is used at a change gear ratio of four:one or extra.
The tiny sprocket is made use of for any low speed large load transmission as in scenarios of choice based on the “Low-speed selection”.
Sprockets are utilized in circumstances exactly where the teeth are heavily worn.
Sprockets are used below circumstances where you will find regular starts and stops or sudden regular or reverse rotations.
Standard cautions
For deciding on the number of teeth and pace ration of your sprocket, see “How to select right chain” . For cautions for installing a sprocket on the shaft and substitute timing, see “Installation adjustment maintenance” .
