Replacement gear

[David George 1Participant @davidgeorge1]

A friend has been given a Chester machine tools, Conquest Mill Super.  has anyone any information on this mill as I believe it is discontinued and the original gear for the spindle drive is a plastic but smashed gear. I could make one but if anyone could help with a replacement I would be most grateful. I wondered if this mill could have been used by other retailers with a different badge on as there is no handbook with this mill so no part numbers etc.

David George

[Hugh Stewart-Smith 1Participant @hughstewart-smith1]

hello David,

if you friend could send a photo of the gear in question, we might be able to help.

Hugh                                                                                                       Amadeal Ltd

[John HaineParticipant @johnhaine32865]

It looks like a version of the generic “X2” mill so should be spares around.  Alternatively I think there are belt drive kits which make it more robust and quieter.

[DC31kParticipant @dc31k]

There have been discussions of this issue in the past. Finding those threads and spending five seconds looking at them would tell you if the machine is the same as your own or not. Even if the machine is not identical, the solution used might bive you ideas.

Including a picture of the machine would assist.

[Stuart Smith 5Participant @stuartsmith5]

Have you tried contacting Chester?

They list 2 gears for the ‘Conquest super mill’ as spare parts.

Link below:

https://www.chesterhobbystore.com/shop/tooling-accessories/spare-parts/gears/ 

They have a manual as well, if it is the same machine:

https://www.chesterhobbystore.com/wp-content/uploads/2021/09/Conquest-Super-Mill-Operation-Manual.pdf?srsltid=AfmBOor9KrBQUk2XEX7mTvPHHNjST9jmq_Aw_OohB61I5Rd0BsOSiD8v 

 

Stuart

[David George 1Participant @davidgeorge1]

These are the pictures of the gears I have not got any other information yet and the part numbers are not in the parts list in the handbook. He has talked to Chester but without more information he is stuck. I think I will have to ask him to send them to me to check sizes and tooth count etc.

 

 

 

 

David

[Speedy Builder5Participant @speedybuilder5]

In case friend can’t find a replacement, could this sort of thing help

Free STL Gear designer   https://www.stlgears.com/

Bob

 

[Stuart Smith 5Participant @stuartsmith5]

This looks like the one you want:

Stuart

 

[John HinkleyParticipant @johnhinkley26699]

I can’t see the gear to which Stuart has linked, but this one from Amadeal looks very similar to the broken one that David has shown.  As far as I can estimate, the gear tooth counts are the same and these gears were common to a lot of mills and mini lathes produced around the same time, designed apparently to destroy themselves when stressed to protect the rest of the transmission.

John

 

[JasonBModerator @jasonb]

ARC do a 12/20 in metal as well as the original plastic, just check the bores are the same if you want to go for spmething stronger.

[David George 1Participant @davidgeorge1]

Thanks for all the help. Chester Machine tools have come up with a new replacement pair. He bought them over this morning for me to check them and  luckily he did as the main gear shaft was over size by 0,025 and he was going to press it on and would possibly split the plastic gear. After a scrape and pollish on the inside  of the gear it was a tight push fit.

David

[old martParticipant @oldmart]

At that price, it would be a good idea to get a spare. The nylon will run quieter and act as a safety link in the event of a crash.

[Author]

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