Thread: Waldown Type 8SN Series III Rebuild

Bob, Waldown may well have had a 'special' ground by NSK at the time.
You would certainly be able to grind the internal diameter of the housing washer to provide clearance around the spindle - even by hand - to use it. I would.... since it doesn't even have to be concentric.

Joe

Hi BT,

Don't send it back to the garden shed just yet... ( But thanks for the encouragement!)

When I was at the BSC bearing place, the young guns manning the counter had to go get the older guy from out the back to come and gaze in wonder at the Hofffman XLM18 bearing...

The dialog went something like this...

"These guys went out of business years ago you know", he said slowly shaking his head..

"Let me take a few measurements and see what we can do".... more head shaking and mumbling...

"Leave it with us and come back in the new year"


So, my expectations of an exact replacement are not very high, and since the condition of the current bearing is pretty good, I'll probably do the same as you and keep the original, but if on the other hand they manage to find an equivalent, I'll be sure to get more than one and send one off to Perth...

Regards
Ray

Ray and Bob,
have you come across this website?
http://www.obsolete-bearings.com/
Joe

From my cursory checking of Hoffman bearings, the XLM 18 was 18mm ID and 35mm OD (Hoffman's codes stood for XL=Extra light and M= metric and 18=spindle washer ID. The currently manufactured equivalents from various manufacturers would be a 2903 and is available. Bob, the internal diameter on the XLM 18 and the 2903 of the housing washer is 18.2mm. So if your 51203 (17mm ID) bearing fits the spindle, you would only have to take 0.1mm off the inside bore of the housing washer to match that clearance....
Joe

Thanks for the detective work Joe.

I've added the bearing site to my favourites.

I am happy enough to stick with the old NSK thrust bearing that I have reinstalled between the new radial ball bearings simply because Waldown use paper thin steel shims as spacers and as protective end shields outboard of the bearings. I have stuffed up a few of these shims on the garden shed drill through clumsiness and heavy handedness. Fortunately I had the beater ( which was your's before the Servian appeared ) and I was able to use some of it's spindle shims to replace the knackered ones.

I'm not risking stuffing up more shims because I have no spares.

BT

Bob & Ray, here's another bearing possibility for you -
McMaster-Carr
If your local guys can't help then an import may be the go.
Michael

Thanks Joe,

Great detective work! That's a handy site to remember, and you are right the Hoffman bearings are 18 x 35 12mm thick

McMaster Carr list a thrust bearing part number 6681K14 that looks like a direct equivalent.. many thanks Michael for the tip.

Here's the McMaster Carr catalog page.




Regards
Ray

PS.. Bob, I notice they carry shim washers, but I haven't checked sizes.. http://www.mcmaster.com/?orderview=n...-shims/=fkxd8l

Originally Posted by Anorak Bob

I wonder if the bearing was modified by Waldown.

Some manufacturers have bearing made especially for them. York Airconditioning (ex Borg Warner) had bearings for their auto airconditioning compressors that one could only get from York..( I used to work there)

Also Mercruiser had a special on their gimble for the stern drive (boats)...I did a lot of searching for a cheaper alternative than Mercruisers...to no avail

Hi Ray

here is a couple of pics of my series 2 switch which looks to be the same housing as yours there is also a couple of pics of my $40 waldown grinder after a restoration I had to make up a new switch plate and name badge and I have a spare switch plate left over if you want it

cheers
Peter

I saw that switch box casting in Ray's first lot of photos. It had the architrave switch mounted on it and I couldn't make out what it was. Now I know. Thanks Peter.

My drill really is the budget model with it's pressed steel plate substitute.

Has anyone bought stuff from McMaster Carr? You can certainly get it all in the land of plenty.

BT

Originally Posted by harty69

Hi Ray

here is a couple of pics of my series 2 switch which looks to be the same housing as yours there is also a couple of pics of my $40 waldown grinder after a restoration I had to make up a new switch plate and name badge and I have a spare switch plate left over if you want it

cheers
Peter

Hi Peter,

Thanks for the kind offer, I'll wait till I manage to track down a suitable switch before I rush in and accept the offer of your switch plate.

Beautiful restoration job on the grinder

I notice the switch on the grinder is up for on, and opposite way round on the drill press? Was that the normal practice?

Regards
Ray

Originally Posted by Anorak Bob

I saw that switch box casting in Ray's first lot of photos. It had the architrave switch mounted on it and I couldn't make out what it was. Now I know. Thanks Peter.

My drill really is the budget model with it's pressed steel plate substitute.

Has anyone bought stuff from McMaster Carr? You can certainly get it all in the land of plenty.

BT

Hi BT,
I've had an account with them for a while, but never managed to get anything shipped outside the US, so this time I'll use the shipitto address and see how it goes.

When you get the chance, (and if you are interested) if you could measure up your shims, and I'll get some when I order mine, They come in packs of 10,25 or 50 depending on size, mostly less than $10 per pack.

Regards
Ray

Originally Posted by RayG

Hi Peter,

Thanks for the kind offer, I'll wait till I manage to track down a suitable switch before I rush in and accept the offer of your switch plate.

Beautiful restoration job on the grinder

I notice the switch on the grinder is up for on, and opposite way round on the drill press? Was that the normal practice?

Regards
Ray

Hi Ray

I changed the switch plate on the grinder to match another grinder i have (not a waldown) so they both switch the same way in the case of an emegency

cheers
Peter

Hi All,

Still chasing those thrust bearings ... McMaster Carr was a washout, tried several times to get them to ship to a USA based address, and they just refused, now they don't talk to me at all... So I've filed a complaint with the FTC and asked for clarification of export regulations from various US federal regulatory bodies... but failing a legal challenge under the terms of the USA Australia Free Trade Act, I see no point beating my head against a wall of stupidity... The parts in question are, as far as I can tell imported to the US from China anyway..

A fellow forum member who retains his "approved customer" rating has offered to get the parts for me, but I'm afraid that they might revoke his favoured status if they see an order for the same parts as I'm chasing... so I'll just give them a complete miss, which is annoying in the extreme..

Other Options..
Obsolete Bearings in the UK has yet to respond, but what with Christmas/New Year I'll wait for a while..

Chinese suppliers, at least half a dozen Ive found seem to have the goods, but minimum orders are generally around the 200 or 1000 parts... so does anyone want several hundred bearings suitable for a Waldown Drill Press...

So unless there is a sudden change, it looks like the old thrust bearings are going back, they are in pretty good nick anyway.

Regards
Ray

PS.. Looks like these guy's might do small quantities... http://www.tjhaolin.com/