UNIOR Sprocket wear indicator - 1658/2P - 629230

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Brand: Unior

Model: 1658/2P / 629230

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material: special tool steel, hardened and tempered

surface finish: chrome plated according to ISO 1456:2009

for HG and IG sprockets

The sprocket wear indicator is used to determine the condition rear sprockets. It can be used to check 12 to 21 tooth sprockets


The chain is put on the sprocket and the tool placed with its round end between two teeth on the upper sprocket side

The last chain link is moved away from the sprocket and a force of 100 N or 10 kg is applied to the tool in the direction of sprocket rotation

Now the last chain link is moved towards the sprocket

If it skips easily to the cog the sprocket is in a good condition and will function flawlessly even with a new chain

However, if the last chain link gets stuck on the tip of the neighbouring tooth or if we have to force it to skip on the cog, the sprocket is worn out and should be replaced

In case the chain falls off the clog when applying force, the sprocket is heavily worn out and a replacement is overdue

UNR OUT 629230
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