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General => Chatter => Topic started by: Vijay on July 28, 2021, 06:58:17 PM

Title: Helical gear with damaged teeth
Post by: Vijay on July 28, 2021, 06:58:17 PM
Just wondered if you guys had any suggestions how I can fix/replace a helical gear on an old chopsaw I have. The teeth are pretty scredded up and not available from the manufacturer as a part. Just seems a shame to throw a complete machine away cos of a gear :(
Title: Re: Helical gear with damaged teeth
Post by: Glycer-rides on July 28, 2021, 09:54:00 PM
I had a cheap chop saw similarly fail with the reduction gear losing teeth.

The only realistic option here (for 1% of the population) is to buy / find another cheap, faulty one for spares to fix it.
Title: Re: Helical gear with damaged teeth
Post by: Julian on July 29, 2021, 12:18:45 AM
You can buy pre-cut gears from various suppliers.

Only issue would be if yours have special bosses, but it's worth a search or two.
Title: Re: Helical gear with damaged teeth
Post by: Vijay on July 29, 2021, 01:19:32 PM
I had a cheap chop saw similarly fail with the reduction gear losing teeth.

The only realistic option here (for 1% of the population) is to buy / find another cheap, faulty one for spares to fix it.

That's exactly what a place an engineering mate said, find a donor. Likelyhood is very small that I'll find one, local and with the gear in good condition :(
Title: Re: Helical gear with damaged teeth
Post by: Vijay on July 29, 2021, 01:20:17 PM
You can buy pre-cut gears from various suppliers.

Only issue would be if yours have special bosses, but it's worth a search or two.

Looked on Ebay and Google but didn't amount to much. Any ideas what sort of places I should be searching?
Title: Re: Helical gear with damaged teeth
Post by: Julian on July 29, 2021, 05:51:39 PM

These people are pretty good although I haven't bought gears from them.

https://www.hpcgears.com/

There will be many others, but you'll have to search for them ... it's not really the thing you'll find on ebay.

You could also consider a redesign and fit a toothed belt drive instead.  Loads of info on line.
Title: Re: Helical gear with damaged teeth
Post by: Vijay on August 01, 2021, 11:34:03 AM
Thanks Julian, will have a look though and contact them  :)