I have an oven which has telescopic rails which allows certain shelves to slide out on arms. They are now getting a bit sticky and one of them struggles to go all the way in. Was wondering what the best oil is to lubricate it.
Conscious that the oven goes up to about 300c so wondering if WD40 / 3 in 1 oil is ok at these temps or whether it will burn off. I also thought about vegetable oil.
Any thoughts appreciated
Do they have internal ball bearings, if they do remove them from the oven
and degrease them and then use ptfe or graphite based dry lubricant, and
refit them. Its normally the old grease from cooking that makes them stiff.
This newsgroup posting comes to you directly from...
That is my thinking. I suspect they have become ‘gummed up’.
Assuming the rails can be disassembled, I’d try taking them apart and
With the best will in the world, the nooks and crannies of an oven are s*ds
to clean. We have a self cleaning over and still need to ensure the nooks
and crannies are clean after a cleaning cycle.
On Mon, 07 Oct 2019 19:11:40 +0100, Harry Bloomfield, Esq.
I wouldn't suggest PTFE :)
Frying pan temperatures are generally ok with PTFE coatings as long as you don't
have an empty pan on a full output ring.
In the environment of an oven it gets slightly more dodgy. 200 deg C would be
ok, but our oven for instance has a top setting of 300 deg C, that is getting
into dodgy territory with PTFE. With a wonky thermostat it only need to rise
to 327 deg C for the PTFE to start liberating some lethal products.
If the oven has catalytic cleaning like ours then it could be a clean oven with
the drawback of a very permanent goodnight for all in the vicinity.
Its probably hardened vegetable oil or burnt on fat that has caused the
rails to become sticky. Clean them with a spray on oven cleaner (repeat
WD 40 will last all of 10 seconds (flash point 49C), 3in 1 oil has a
flash point of around 150C.
Agree completely about cleaning. Graphite is one option, the other thing
which will take the temperature is a pure silicone oil. Either as a
spray or the liquid which is sold for lubricating waste pipe fittings.
On Monday, 7 October 2019 18:55:40 UTC+1, Lee Nowell wrote:
WD40 is almost the same as white spirit. It's not a lubricant.
Vegetable oils turn to very sticky gum, especially in high temps, the last thing you need.
Oil is the problem, not the solution. Clean the thing out, don't relube it. Ammonia or caustic soda are the things to get baked grease out.
Thanks all. Good advice as usual. Looks like first step is to try and get them clean. The ball bearings are internal and no obvious way of dismantling them. Our oven is a Siemens if anyone has experience of these.
A couple of you have suggested caustic soda. Any idea of ratio of caustic to water I should use? I can soak them for a while and see what happens.
On the rails.
Just don't leave the rails in when using pyrolytic cleaning.
The online manual now says only use high temp food grade lubricants and
gives a phone number to talk to support.
The original paper stuff said lithium grease as I remember but I haven't
seen the paper stuff for years.
There is certainly a white grease on the ball bearings.
I was hoping to try cleaning them today but after a bit of googling the tec
hnique seems a bit varied. Some say cold water , some hot (unsure if this m
eans boiling or not) and the rato of caustic soda to water seems more if a
"bung some in". Anyone have experience of doing this and can clarify a bit?
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