This gage checks the wear-elongation of chains.
Check out the chain elongation at a portion that’s most
commonly engaged together with the sprockets (portion probably to be worn).
When the center in the pin from the chain to become measured
This gage checks the wear-elongation of chains.
Test the chain elongation at a portion and that is most
often engaged using the sprockets (portion probably to get worn).
Once the center of the pin in the chain to be measured reaches the arrow point, it implies that the chain is critically elongated. In this case, replace the chain.
Use the gage to check the dress in elongation of your chain.
Standard terms for sprockets
Nominal variety of sprockets
The nominal amount of a sprocket may be the similar because the nominal amount of the corresponding chain. Such as, Chains such as 50, 50HK, and 50LD is usually engaged using a sprocket 50. It is actually followed by symbols and characters indicating the amount of chain strands, the number of sprocket teeth, hub type, tooth head hardening, and so forth.
Diameter of prepared hole and shaft hole finishing
A standard sprocket for any single strand or double strand chain has a shaft hole prepared at a diameter stated in the table of dimensions. When 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 hard and dress in resistant as they are impacted when engaged with all the rollers of the chain and worn by sliding with all the rollers. When significant wear and large shocks are anticipated, sprocket.
Types, development and supplies
made of carbon steel or cast steel need to be used and high-frequency hardening need to be performed.
The common sprockets forty to 120 which has a hub on only one side for single and double strand chains are induction-hardened even though the amount of teeth is smaller. Irrespective of whether the products is induction hardened or not is shown from the tables of dimensions of respective sprockets for your reference. In addition, during the following situations, induction-harden the teeth on the sprocket.?The small sprocket has 20 or less teeth and is employed at 1/6 or more of your maximum velocity stated during the table of greatest kilowatt ratings.
The little sprocket is utilized at a alter gear ratio of 4:one or extra.
The compact sprocket is utilised for a reduced pace big load transmission as in instances of variety based upon the “Low-speed selection”.
Sprockets are used in situations where the teeth are heavily worn.
Sprockets are made use of below ailments wherever you’ll find regular starts and stops or sudden regular or reverse rotations.
General cautions
For deciding on the number of 
teeth and pace ration from the sprocket, see “How to pick suitable chain” . For cautions for putting in a sprocket on a shaft and substitute timing, see “Installation adjustment maintenance” .
