Chain Wear-elongation Test Gage

This gage checks the wear-elongation of chains.
Check out the chain elongation at a portion which can be most
commonly engaged together with the sprockets (portion most likely to get worn).
When the center on the pin in the chain to be measured
This gage checks the wear-elongation of chains.
Test the chain elongation at a portion and that is most
often engaged together with the sprockets (portion more than likely to be worn).
When the center with the pin of the chain to get measured reaches the arrow stage, it means that the chain continues to be critically elongated. In this case, replace the chain.
Make use of the gage to test the dress in elongation of the chain.
Common terms for sprockets
Nominal amount of sprockets
The nominal number of a sprocket is definitely the exact same as the nominal variety of the corresponding chain. For example, Chains this kind of as 50, 50HK, and 50LD could be engaged having a sprocket 50. It truly is followed by symbols and characters indicating the quantity of chain strands, the number of sprocket teeth, hub variety, tooth head hardening, etc.
Diameter of prepared hole and shaft hole finishing
A conventional sprocket for any single strand or double strand chain features a shaft hole prepared at a diameter stated in the table of dimensions. Once you finish the shaft hole, machine it in reference for the outer diameter or root diameter.
Hardening of tooth heads
The teeth of the sprocket have to be tough and wear resistant as they are impacted when engaged using the rollers in the chain and worn by sliding together with the rollers. When significant wear and substantial shocks are anticipated, sprocket.
Styles, development and supplies
made of carbon steel or cast steel must be utilized and high-frequency hardening need to be carried out.
The typical sprockets forty to 120 with a hub on only one side for single and double strand chains are induction-hardened even though the number of teeth is little. Regardless of whether the solution is induction hardened or not is shown inside the tables of dimensions of respective sprockets to your reference. On top of that, inside the following circumstances, induction-harden the teeth with the sprocket.?The little sprocket has twenty or less teeth and it is used at 1/6 or far more of the optimum speed stated while in the table of maximum kilowatt ratings.
The smaller sprocket is employed at a modify gear ratio of four:one or additional.
The small sprocket is employed to get a lower velocity big load transmission as in cases of variety based upon the “Low-speed selection”.
Sprockets are used in situations wherever the teeth are heavily worn.
Sprockets are used underneath situations exactly where you’ll find frequent begins and stops or sudden regular or reverse rotations.
Common cautions
For picking the quantity of teeth and speed ration from the sprocket, see “How to pick appropriate chain” . For cautions for installing a sprocket on a shaft and substitute timing, see “Installation adjustment maintenance” .