Chain Wear-elongation Test Gage

This gage checks the wear-elongation of chains.
Check out the chain elongation at a portion that's most
usually engaged together with the sprockets (portion probably to become worn).
Once the center of the pin in the chain to become measured
This gage checks the wear-elongation of chains.
Check out the chain elongation at a portion that's most
usually engaged with all the sprockets (portion most likely to become worn).
When the center of your pin on the chain for being measured reaches the arrow point, it implies that the chain is critically elongated. In this instance, replace the chain.
Make use of the gage to check out the put on elongation of your chain.
Standard terms for sprockets
Nominal number of sprockets
The nominal number of a sprocket could be the exact same since the nominal quantity of the corresponding chain. By way of example, Chains such as 50, 50HK, and 50LD might be engaged that has a sprocket 50. It truly is followed by symbols and characters indicating the quantity of chain strands, the quantity of sprocket teeth, hub sort, tooth head hardening, and so forth.
Diameter of prepared hole and shaft hole finishing
A standard sprocket for a single strand or double strand chain has a shaft hole ready at a diameter stated during the table of dimensions. Whenever you finish the shaft hole, machine it in reference to the outer diameter or root diameter.
Hardening of tooth heads
The teeth of a sprocket need to be hard and wear resistant as they are impacted when engaged together with the rollers from the chain and worn by sliding using the rollers. When serious wear and significant shocks are anticipated, sprocket.
Types, construction and materials
made of carbon steel or cast steel need to be applied and high-frequency hardening really should 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 if the quantity of teeth is tiny. No matter if the merchandise is induction hardened or not is shown during the tables of dimensions of respective sprockets to your reference. Moreover, during the following scenarios, induction-harden the teeth from the sprocket.?The small sprocket has twenty or less teeth and it is utilised at 1/6 or more from the highest speed stated inside the table of maximum kilowatt ratings.
The tiny sprocket is made use of at a alter gear ratio of four:1 or extra.
The little sprocket is made use of to get a low speed huge load transmission as in instances of variety dependant on the "Low-speed selection".
Sprockets are used in circumstances exactly where the teeth are heavily worn.
Sprockets are utilised underneath disorders in which you'll find frequent starts and stops or sudden standard or reverse rotations.
Standard cautions
For picking the number of teeth and speed ration of the sprocket, see "How to select proper chain" . For cautions for putting in a sprocket on the shaft and replacement timing, see "Installation adjustment maintenance" .