This gage checks the wear-elongation of chains.
Check the chain elongation at a portion that is most
frequently engaged together with the sprockets (portion probably to get worn).
Once the center from the pin of your chain to become measured
This gage checks the wear-elongation of chains.
Test the chain elongation at a portion which is most
regularly engaged with the sprockets (portion probably to be worn).
Once the center in the pin of your chain to become measured reaches the arrow level, it implies that the chain is critically elongated. In this instance, replace the chain.
Make use of the gage to test the put on elongation of the chain.
General terms for sprockets
Nominal number of sprockets
The nominal variety of a sprocket could be the exact same since the nominal amount of the corresponding chain. For example, Chains this kind of as 50, 50HK, and 50LD could be engaged by using a sprocket 50. It truly is followed by symbols and characters indicating the amount of chain strands, the amount of sprocket teeth, hub type, tooth head hardening, etc.
Diameter of prepared hole and shaft hole finishing
A conventional sprocket for a single strand or double strand chain has a shaft hole prepared at a diameter stated while in the table 
of dimensions. If 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 should be tough and dress in resistant as they are impacted when engaged using the rollers of your chain and worn by sliding using the rollers. When extreme dress in and substantial shocks are anticipated, sprocket.
Varieties, building and materials
made of carbon steel or cast steel need to be applied and high-frequency hardening should be performed.
The conventional sprockets forty to 120 with a hub on only one side for single and double strand chains are induction-hardened whether or not the amount of teeth is modest. Regardless of whether the products is induction hardened or not is proven during the tables of dimensions of respective sprockets for the reference. On top of that, during the following scenarios, induction-harden the teeth of the sprocket.?The tiny sprocket has twenty or significantly less teeth and it is used at 1/6 or far more in the maximum speed stated from the table of greatest kilowatt ratings.
The small sprocket is utilized at a change gear ratio of four:one or far more.
The modest sprocket is applied to get a minimal velocity large load transmission as in circumstances of variety based upon the "Low-speed selection".
Sprockets are utilized in conditions in which the teeth are heavily worn.
Sprockets are made use of beneath conditions where you will discover regular commences and stops or sudden common or reverse rotations.
Basic cautions
For picking out the number of teeth and velocity ration with the sprocket, see "How to select appropriate chain" . For cautions for putting in a sprocket on a shaft and replacement timing, see "Installation adjustment maintenance" .
