|Lee Reynolds 1||17/07/2020 10:39:05|
|5 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|
5670 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|
|35 forum posts|
Delrin should not need lubrication buy shouldn't be harmed by lubrication either.
|1198 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|
|544 forum posts|
Hi there, Ian,
Are you suggesting possible delamination?
|not done it yet||17/07/2020 12:05:52|
|5031 forum posts|
Exactly this. As per page 8 of the user manual. Or rather ‘daily’, perhaps?
|john halfpenny||17/07/2020 12:08:15|
|57 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|
|396 forum posts|
Although the nylon teeth on V6 cam gears are a notorious week point.......
|Lee Reynolds 1||17/07/2020 13:09:12|
|5 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|
16411 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
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