Hello welcome to Enots engineering I'm Alan
today I'm just looking at my Boxford book for the lathe
this was published in 1971 and is the seventh edition
so some of the information in here is very old
and I was just looking at the oil and grease needed to lubricate the lathe
it's the time of year where most people on this side of the world won't venture into the workshop
because of the cold and for those don't
I hope you've oiled and protected your lathe against rust for the winter
I thought I'd give my lathe the good clean and oil ready for the new season
now before you ask me what I use of the lathe the book says to use an SAE 20 oil
and a good quality garage Grease for the bearings
Now due to oil developments over the last 50 years
I use car engine oil on my lathe because
it's a synthetic oil it has rust inhibitors and also it has addatives to prolong the life of the metal
so let's go to the workshop see how we do it
today I'm just cleaning the lathe down getting ready for the new year
I'll start by giving the lathe a good clean down
and I just sort of point out some of the places where your oil the lathe
because some of them were not too clear in the handbook
and I just thought I'd mention some problems that you may have
if you're not oiling the right places
so let's start with the tail stock I have added this on myself
so yours probably won't have this
the two points that you oil on the tail stock
one is on the top here
and the other one is at 45 degrees on the end of the spindle
if you wind it forward you should see in the groove on the top here
some oil
and I'll put some one the slide way which I've just cleaned
and on the Vee
moving down this is just the bearing block
That lubricates the end of your lead screw
just give it a pump
when you see the oil coming out just inside and on the other end
I've wound the top slide right across as far as it will go
yours will probably go further than that
in fact it should wind right off the end so you can see the thread
but I've have a DRO scale bolted to the side so it limits the movement
I will just put some oil on the thread and also on the slides
now before all that runs all over the front just take a clean cloth again
Take off any excess
so on the cross slide we have an oiler here
It doesn't need a lot of oil just one pump and this will oil the bearings inside
and it will come out underneath eventually
and the same on the compound slide
An oiler on the top just give it one pump
movie it back to expose the thread
I'm just slackening the two grub screws hold the compound slide to the top slide
This should lift up
put that on the top
Clean the slides
I could just put a little oil on the screw
as you get to the end just wipe any excess off
Wipe the face clear
a spot of oil on the screw inside
I'll just put a little bit on the face
Return the compound slide
tighten up the curb screws
now I will do the other end of the compound slide
You can see the oils already come through from the first bit
I've wound the cross slide fully forwards
Now I can get at the back
a spot of oil of the screw at the back here
and the two slides
just return it to about central position
now we move down now to the apron
so on the apron I'll just point out where the oil points are
the first one is this hole this lubricates a half nuts here
so unless your screw cutting you don't need to put any lubrication in there
because all it will do its sits on the top of the half nut
which is just behind here there's a little recess and the oil sits in there
so when you engage the half nuts the oil that sitting inside
will run down go through a small hole in the half nut
and lubricate each side of the nut
so there's no point in putting oil in there unless your screw cutting
the next place to oil is this one here now this little tube puts oil into the gear on the back
you can see it running out on the base here
that lubricates the travers gear it's at the back of that
another oil filler is here the end of the shaft
so I just put a pump in there some will run out
now this shafts important because the oil goes through and lubricates the small gear at the back
now if the shaft is wrong you won't get lubrication to the gear
now what I mean by that is this hole has to be at 12 o'clock on the top
so if that shaft has moved round and the holes on the bottom
you won't be putting any oil in the back of the gear
I will show you that on a diagram
this is a hole in the end of the shaft and it should be at 12 o'clock
if it's down here that hole will be at the bottom
when you put oil into the hole it goes along this hole
and this hole breaks into one that goes in the centre and also has another hole coming through
so the oil will come through here down to the gear onto the edge of the gear
and on to the bore of the gear
whereas if this hole is at the bottom the oil will just go in
some might travel up and into there
but what will happen most of it will run back out and down
so it's important that that hole is at 12 o'clock
now down the bottom here you could say little oil filler
just put some oil in there
this runs into a reservoir which lubricates the clutch for the traverse
then the final oil feed is on this one
and this lubricates a spindle for backwards and forwards or the saddle
just mop up any excess
so that's the saddle down now we will move down to the other end
the headstock
on the top of the headstock we have a grease nipple
on the left and the right these two grease nipples feed grease to the main bearings
in the headstock just give a pump of grease to each one
limit the amount of grease you give to the bearing
because what happens is the bearings are not sealed
so some of the grease will come down into the bearing
some we'll come to this side of the bearing and some will go the other side
now if you get the grease going the other side and the same on this
you start filling grease up around the bearing inside
and eventually it starts to throw around inside the headstock
and you end up with grease in the head stock
so you might think by pumping 7 or 8 times on to this and putting a lot of grease in
it's going somewhere all it's doing its filling your head stock up with grease
and at a later date you'll be wiping it off your belt
wipe any excess off because then any excess oil or grease could attract swarf
a small oiler inside you can just see inside there there's a small oil filler
you turn the chuck to get the position of the oiler
so you can then put your oil can through and oil that
but this only needs doing when you're in back gear
that's because the pulley that's inside the headstock is in two halves
and some pins come out and lock into this half
so it turns as one unit when you're in back your gear and you pull this lever
it separates the two halves and that's where the bearing in the middle needs to be lubricated
so that the back gear works okay
so if you go lower down now you can see there's another oiler here
this is the other end of the lead screw let's give that some oil and
I always oil the lead screw every day if
I'm using the traverse or thread cutting because there's only one lead screw on this
which operates the traverse and the thread cutting half nuts
so you need to lubricate that
now the next point for lubrication is in the gearbox on the end
so we'll look in here
so I start with this oil filler here
if you give it too much oil all that will happen is it will all run down inside of the gearbox
and end up on the bottom of the gearbox door or on the tray at the bottom
this lubricates the spindle there are two oil holes on the end of these gears
that lubricates the spindle that the gears on
and then on some of the main gears there are holes in the side at 45 degrees
you can see on the bottom
Turn that around
on the bottom gear here there's another hole
and that just puts lubrication to the center of the gear
so if you're using the gearbox cutting a thread or using if for the travers you need to oil regular the different gears
on the end at the back of the headstock there's a small oil hole there
it looks like a grease nipple on mine but it's not it's for oil that oils the back gear inside
what it does it goes along the shaft that this back gear is located on
and gives oil to the back gear when you use it
so when you use the back gear you need to oil that one as well as the one inside the hole
and I think that's about it for oiling
I'll just close this up
I'll just give you a little tip
if you get yourself one of these magnetic pickups
this one has a small LED in the end
there's not that expensive
this particular make will clean the hole here
you can see that pick up goes straight down the hole
and will pick out any swarf
another use for the magnetic pickup
if you move your tail stock out of the way you could then put this down the the back
you'll pick up any swarf that's fallen it into the casting void
that's already four the next project
well that's it for today thanks for watching
hope you enjoyed it and we'll see you next time on
Enots engineering