Spur gear long shot

[dnb]

I am looking for a compound spur gear with 42 teeth on the top half and 12 teeth on the lower. Overall height of 20mm. It needs to have a module of 1.0 and preferably be made in nylon or similar plastic.

Does anyone have any suggestions as to a supplier?

Thanks

[dr_gn]

Could try HPC gears.

[henryk001]

Try these.
https://www.bearingsrus.co.uk/gears-racks/spur-gea...

[dr_gn]

henryk001 said:

Try these.
https://www.bearingsrus.co.uk/gears-racks/spur-gea...

I think he wants a double (compound) gear.

[dnb]

HPC gears was a good call, but appear to have nothing off the shelf with the right tooth count. It has given me a few ideas though.
Yes, I am looking for a double gear.

[henryk001]

dr_gn said:

I think he wants a double (compound) gear.

Apologies, should have gone to specsavers.

[dr_gn]

dnb said:

HPC gears was a good call, but appear to have nothing off the shelf with the right tooth count. It has given me a few ideas though.
Yes, I am looking for a double gear.

HPC have made custom double gears for me before, but out of steel. They weren’t that expensive.

If you got two separate gears, the smaller one double thickness, you could turn half of it down to be a plain spigot, and bond it into a corresponding hole bored in the larger one.

[bucksmanuk]

It sounds like a double gear that you want.
HPC/Ondrives is who you need to talk to
I would be amazed if you could get anything from the catalogue exactly what you require.
Specify exactly what you want, and they will make it though. If you want a 1-off, it’s going to be expensive, so tell them what you can compromise on to get the price down.
Does it have to be plastic?
Most of the gear turnover they do is bespoke, and the catalogue is a good guide for bespoke prices. Well it was when I worked there in the “design office”, although that was in 1985!