This gage checks the wear-elongation of chains.
Test the chain elongation at a portion which is most
usually engaged with the sprockets (portion almost certainly to be worn).
When the center of your pin in the chain for being measured
This gage checks the wear-elongation of chains.
Examine the chain elongation at a portion and that is most
regularly engaged with the sprockets (portion almost certainly to get worn).
When the center of your pin of the chain to become measured reaches the arrow level, it signifies that the chain has become critically elongated. In this case, substitute the chain.
Make use of the gage to check the wear elongation of the chain.
Standard terms for sprockets
Nominal number of sprockets
The nominal quantity of a sprocket is the very same since the nominal variety of the corresponding chain. By way of example, Chains this kind of as 50, 50HK, and 50LD could be engaged by using a sprocket 50. It can be followed by symbols and characters indicating the number of chain strands, the amount of sprocket teeth, hub variety, tooth head hardening, and so forth.
Diameter of ready hole and shaft hole finishing
A typical sprocket to get a single strand or double strand chain has a shaft hole ready at a diameter stated within the table of dimensions. When you finish the shaft hole, machine it in reference on the outer diameter or root diameter.
Hardening of tooth heads
The teeth of the sprocket needs to be challenging and put on resistant because they are impacted when engaged with the rollers with the chain and worn by sliding with all the rollers. When serious put on and large shocks are anticipated, sprocket.
Kinds, building and products
made from carbon steel or cast steel should really be employed and high-frequency hardening really should be carried out.
The typical sprockets forty to 120 by 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 item is induction hardened or not is shown inside the tables of dimensions of respective sprockets to your reference. On top of that, within the following instances, induction-harden the teeth in the sprocket.?The compact sprocket has twenty or less teeth and is used at 1/6 or more on the highest pace stated in the table of greatest kilowatt ratings.
The compact sprocket is made use of at a change gear ratio of four:one or additional.
The tiny 
sprocket is made use of to get a very low velocity large load transmission as in scenarios of choice dependant on the “Low-speed selection”.
Sprockets are utilized in circumstances where the teeth are heavily worn.
Sprockets are made use of below conditions wherever you will find frequent starts and stops or sudden regular or reverse rotations.
Standard cautions
For picking the number of teeth and pace ration with the sprocket, see “How to select suitable chain” . For cautions for putting in a sprocket on the shaft and substitute timing, see “Installation adjustment maintenance” .
