This gage checks the wear-elongation of chains.
Verify the chain elongation at a portion which can be most
regularly engaged together with the sprockets (portion almost certainly to be worn).
Once the center of the pin of your chain to get measured
This gage checks the wear-elongation of chains.
Check the chain elongation at a portion that is most
usually engaged with the sprockets (portion more than likely to be worn).
When the center in the pin of your chain to get measured reaches the arrow stage, it signifies that the chain has been critically elongated. In this case, replace the chain.
Make use of the gage to test the dress in elongation of the chain.
Standard terms for sprockets
Nominal quantity of sprockets
The nominal quantity of a sprocket would be the same because the nominal quantity of the corresponding chain. One example is, Chains this kind of as 50, 50HK, and 50LD is usually engaged that has a sprocket 50. It’s followed by symbols and characters indicating the amount of chain strands, the amount of sprocket teeth, hub type, tooth head hardening, and so forth.
Diameter of ready hole and shaft hole finishing
A standard sprocket for any single strand or double strand chain includes a shaft hole prepared at a diameter stated during the table of dimensions. If 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 has to be challenging and wear resistant as they are impacted when engaged together with the rollers from the chain and worn by sliding together with the rollers. When serious put on and large shocks are anticipated, sprocket.
Sorts, development and elements
made of carbon steel or cast steel really should be utilized and high-frequency hardening should really be conducted.
The regular sprockets 40 to 120 using a hub on just one side for single and double strand chains are induction-hardened whether or not the number of teeth is small. Whether or not the product or service is induction hardened or not is proven within the tables of dimensions of respective sprockets for your reference. On top of that, in the following circumstances, induction-harden the teeth on the sprocket.?The tiny sprocket has twenty or significantly less teeth and it is made use of at 1/6 or extra on the greatest velocity stated within the table of greatest kilowatt ratings.
The smaller sprocket is used at a transform gear ratio of four:one or much more.
The smaller sprocket is employed to get a very low velocity big load transmission as in scenarios of assortment based on the “Low-speed selection”.
Sprockets are used in conditions wherever the teeth are heavily worn.
Sprockets are applied beneath circumstances exactly where you can find frequent begins and stops or sudden regular or reverse rotations.
Basic cautions
For picking out the number of teeth and velocity ration of your sprocket, see “How to pick proper chain” . For cautions for installing a sprocket on the shaft and replacement timing, see “Installation adjustment maintenance” .