|Lee Reynolds 1||17/07/2020 10:39:05|
|6 forum posts|
When I get it up and running I will have a change gear set on my Harrison M300 that will comprise a combination of metal, fiber and Delrin gears.
Do I lubricate the set, and if I do, what do you more experienced machinists suggest I use.
I seem to remember reading somewhere that nylon should not be lubricated, is Delrin the same?
|Andrew Johnston||17/07/2020 10:56:08|
6217 forum posts
My M300 has the original steel and Tufnol change gears. I give them an occasional squirt with ISO68 slideway oil as per the manual.
|Ronald Morrison||17/07/2020 11:14:09|
|70 forum posts|
Delrin should not need lubrication buy shouldn't be harmed by lubrication either.
|1327 forum posts|
Nylon absorbs water and even the "Low" absobtion rated Nylon 6 or 6-6 does to a lesser extent. Tufnol should not be lubricated, it's a layered material.
|Swarf, Mostly!||17/07/2020 12:05:35|
|604 forum posts|
Hi there, Ian,
Are you suggesting possible delamination?
|not done it yet||17/07/2020 12:05:52|
|6263 forum posts|
Exactly this. As per page 8 of the user manual. Or rather ‘daily’, perhaps?
|john halfpenny||17/07/2020 12:08:15|
|185 forum posts|
Henry Ford used layered tufnol for camshaft gears on millions of cars. Later he used macerated tufnol, and later still a type of nylon. No problems from engine oil.
|Nicholas Wheeler 1||17/07/2020 12:23:20|
|719 forum posts|
Although the nylon teeth on V6 cam gears are a notorious week point.......
|Lee Reynolds 1||17/07/2020 13:09:12|
|6 forum posts|
Sorry Gentlemen it,s the fiber gear I am more concerned about. It came from 600 group as it was an original gear but missing from my S/H machine.
For the price I expected a metal one....silly me! and then the lubrication advice in the manual would make sense and be followed.
|Michael Gilligan||17/07/2020 13:20:08|
18700 forum posts
Certain grades of Tufnol are used for propeller shaft bearings ... totally immersed in, and lubricated by, water.
A little light reading: http://ahistoryoftufnol.org/whatistufnol/
Edited By Michael Gilligan on 17/07/2020 13:30:35
Please login to post a reply.
Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!
You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.
Click THIS LINK for full contact details.
For subscription issues please see THIS LINK.