This gage checks the wear-elongation of chains.
Verify the chain elongation at a portion that is most
often engaged using the sprockets (portion most likely to get worn).
When the center with the pin from the chain to get measured
This gage checks the wear-elongation of chains.
Verify the chain elongation at a portion that is most
often engaged with the sprockets (portion almost certainly to be worn).
Once the center on the pin in the chain to be measured reaches the arrow stage, it implies that the chain has been critically elongated. In this instance, substitute the chain.
Make use of the gage to verify the wear elongation of the chain.
Common terms for sprockets
Nominal amount of sprockets
The nominal number of a sprocket may be the similar as the nominal number of the corresponding chain. For example, Chains this kind of as 50, 50HK, and 50LD could be engaged using a sprocket 50. It’s followed by symbols and characters indicating the amount of chain strands, the amount of sprocket teeth, hub style, tooth head hardening, and so on.
Diameter of ready hole and shaft hole finishing
A conventional sprocket for any single strand or double strand chain has a shaft hole prepared at a diameter stated inside the table of dimensions. After you finish the shaft hole, machine it in reference to your outer diameter or root diameter.
Hardening of tooth heads
The teeth of a sprocket should be tough and dress in resistant as they are impacted when engaged using the rollers with the chain and worn by sliding with the rollers. When severe dress in and huge shocks are anticipated, sprocket.
Sorts, building and resources
manufactured from carbon steel or cast steel must be utilized and high-frequency hardening must be conducted.
The regular sprockets 40 to 120 by using a hub on just one side for single and double strand chains are induction-hardened even though the amount of teeth is compact. Whether or not the product is induction hardened or not is proven inside the tables of dimensions of respective sprockets for the reference. On top of that, inside the following circumstances, induction-harden the teeth with the sprocket.?The small sprocket has 20 or significantly less teeth and is utilized at 1/6 or additional of the maximum pace stated 
within the table of highest kilowatt ratings.
The tiny sprocket is employed at a transform gear ratio of 4:one or far more.
The compact sprocket is made use of for a lower speed large load transmission as in scenarios of selection depending on the “Low-speed selection”.
Sprockets are utilized in circumstances wherever the teeth are heavily worn.
Sprockets are used beneath situations where there are regular starts and stops or sudden normal or reverse rotations.
Common cautions
For selecting the quantity of teeth and velocity ration of your sprocket, see “How to pick proper chain” . For cautions for installing a sprocket on the shaft and substitute timing, see “Installation adjustment maintenance” .
