Ruberg 6x12 surface grinder saddle lock?

Majorstrain · Dec 10, 2013

Hi Guys,
It's been a while.

I just picked up an old Ruberg surface grinder.
Does anyone know if it has a saddle lock? I've had a look around but all I can find are the gib adjustments.

Also, does anyone have a heads up on the lube for the saddle and z axis ways.
Iv'e already cleaned and greased the longitudinal traverse ball slides.

Here is a pic for clarity.
Cheers,
Phil

Walltoddj · Jan 2, 2014

Majorstrain said:
Hi Guys,
It's been a while.

I just picked up an old Ruberg surface grinder.
Does anyone know if it has a saddle lock? I've had a look around but all I can find are the gib adjustments.

Also, does anyone have a heads up on the lube for the saddle and z axis ways.
Iv'e already cleaned and greased the longitudinal traverse ball slides.

Here is a pic for clarity.
Cheers,
Phil

I have a Reid 6 x 12 and a Brown & Sharpe 618 both have v-ways no gibs to lock the table. I can actually lift up the table on the Reid. You can probably use the table stops to hold it in place by running them together or making an adjustable stop you can then screw in tight you have a stop sticking up from your saddle to use. Just a thought and it may do what you need.

Todd

Swifty · Jan 2, 2014

Used an old Ruberg grinder in the 70's, that had plain V and flat ways, you mentioned that you have ball ways, is this correct? I don't think that I would be using grease to lube the slides, even if it does run on balls.

For the normal and flat ways, we used a very thin oil, even thinning it further with some diesel fuel, it had to flow like water to allow the slides to have minimum friction.

Paul.

Majorstrain · Jan 3, 2014

Thanks for your replies Todd and Paul,

Yep the Ruberg has double V ways on the vertical and fore/aft axis __\▀▀▀▀/__ and simple caged balls running in grooves for the left/right axis.

My interest in the way lock was on the for/aft axis and mainly for stopping movement while grinding a set width channel with a set width formed wheel.

I'll take your advice and use the thinned oil after I strip it down and clean the ways.

Cheers,
Phil

Swifty · Jan 4, 2014

Phil, it must have ball ways similar to tool and cutter grinders. Do you have much experience with hand operated surface grinders, using one is like being able to pat the top of your head with one hand while rubbing your abdomen in circular motions with the other, inexperienced users need to get into a rhythm with (in your case) the right hand working the left to right wheel, whilst the left hand works the in and out.

Paul.

kvom · Jan 4, 2014

You will probably get better results grinding the sides of the channel independently using a wheel narrower than the channel. It will be pretty hard to dress the wheel on 3 surfaces accurately.

Walltoddj · Jan 4, 2014

kvom said:
You will probably get better results grinding the sides of the channel independently using a wheel narrower than the channel. It will be pretty hard to dress the wheel on 3 surfaces accurately.

He's correct in what he's saying. I ground the slots in parts for a hand press in the job shop we would have an undercut so there were no shape corners then we could grind each side then the bottom to get a good clean grinder finish for the ran to move in. Not the greatest drawing but might help.

View attachment Drawing1 Model (1).pdf

Majorstrain · Jan 5, 2014

Thanks for the pointers guys,
I've used grinders in the past (larger auto traverse units) but this is the first machine I've owned.
I've ground a few items on this one already and the rhythm was easy to pickup.

Now that I've had it fully apart, I can confirm that there is no fore/aft travel lock. I'll have to look into fitting something.

Here are a few extra pictures of the ways.

Cheers,
Phil

Ruberg 6x12 surface grinder saddle lock?

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