Thread: Slideway grinders go for a song

Originally Posted by .RC.

The CBN wheel I purchased from the UK arrived today, only a 100mm one, but will be a start.. I am still working on the design for the skates.. Yesterday I purchased some 1" steel pipe couplings, only $1.50 each from Metalland.. I will bore these out and insert the 6202 bearings into them, then have plastic over the top... Eight or nine rollers to a skate... Have to try to spread the load out onto as many rollers as possible, as Phil pointed out above if the load goes onto one roller the bearings will just collapse.. Total cost for a completed roller will be about $5... But I may yet go solid wheels with greased plain bearings to move the grinder and use lighter skates for my smaller stuff that has to be moved yet again...

I really would *not* put plastic over the steel. It will deform quite badly, sag and increase rolling resistance markedly.

Voice of experience here - I had some nice wheels with a very hard rubber/plastic bonded to the underlying cast iron wheels. I managed to almost pull one tyre off doing a 90 deg skew turn of the HBM to get it into the shed.

Bare steel may (will) score the floor a bit especially in turns, but it won't deform significantly. In the end I just used a porta-power with a short ram to take the strain while I repositioned the skates to keep the rollers in line with the direction I wanted to go. It was a bit fiddly, but worked.

Of course if you're going to make fancy steerable skates, ignore my comments....

PDW

Originally Posted by Machtool

I fear you have picked up the CBN thing from the video we did at C.P.E some years ago.

Yes there and also talking to the operator of the grinders at CNC Eng... They just used CBN exclusively. The maintenance manual booklet has lots of helpful hints, like roughing cuts to be no deeper then 0.0005 and finishing cuts 0.0002... I know it will be slow, but quicker then scraping, plus I have some other ideas as well

I know it is just a pity metal spraying cannot be done in machine tool ways...

Originally Posted by PDW

I really would *not* put plastic over the steel. It will deform quite badly, sag and increase rolling resistance markedly.

Voice of experience here - I had some nice wheels with a very hard rubber/plastic bonded to the underlying cast iron wheels. I managed to almost pull one tyre off doing a 90 deg skew turn of the HBM to get it into the shed.

Bare steel may (will) score the floor a bit especially in turns, but it won't deform significantly. In the end I just used a porta-power with a short ram to take the strain while I repositioned the skates to keep the rollers in line with the direction I wanted to go. It was a bit fiddly, but worked.

Of course if you're going to make fancy steerable skates, ignore my comments....

PDW

I always thought those plastic wheels I see on skates have a steel inner.. Did not think that plastic could stand up to tonnes of weight, especially if they only have a bearing at each end... I am trying to keep the profile of them as low as possible... Having tipped a stripped machine over (did no damage and it was only a shaper. These days the lower to the ground the better... Of course the grinder is not top heavy like everything else I have... So I am seriously thinking solid bar rollers for the grinder, the small skates for my light stuff...

Originally Posted by .RC.

I always thought those plastic wheels I see on skates have a steel inner.. Did not think that plastic could stand up to tonnes of weight, especially if they only have a bearing at each end...

Pretty sure you're right but it's a very hard nylon type material. The place that advertises replacement rollers on eBay - KK Materials Handling - isn't all that far from where I am ATM so I plan on picking up a couple sets to take south with me.

The boat rollers are steel, I bevelled off the edges a bit to minimise cutting into the concrete. I'm going to have to repaint the floor once the boat goes so I'm not too picky about score marks anyway.

PDW

Bloody hell RC I go away for 4 weeks and you have the machine operational and the foundations poured!!
Mine is still on the truck. Its so wet at the moment I can't see it moving for a few weeks.
Thanks for copying the manual. Its exactly what is needed to plan my foundations.
Will have to get my finger out.

Mark

Yes things have moved quicker then expected here Mark.. A crane putting a grinder in the way sort of accelerated plans a bit...

Originally Posted by Machtool

I'm just in at work shuffling some paper around. I came across the shipping docket the truck driver gave me when he picked up the box. It lists the vessel name. The Dimitrios C, out of Malta.

So I tap that into Google.

http://www.marinetraffic.com/ais/det...sel:DIMITRIS_C

That 40 foot container has just made it across the Equator. He's at anchor in the Port of Abidjan, Cote d'Ivoire. Just between Liberia and Ghana in Africa.

Regards Phil.

Getting closer... Heading to France now... Just going past Spain...

Originally Posted by .RC.

Getting closer... Heading to France now... Just going past Spain...

I've been watching him. I cracked a beer 3 or 4 days ago, last I checked, when he was drifting past Gibraltar. That's Europe.

Makes me wonder if they have to re-stack the vessel, in any of those ports. I had hoped it was just one short road trip in Sydney, sit on the boat for 6 weeks, and hopefully no cyclones, and a few hundred mile road trip to Wales.

I should have welded the table to the base.

Phil.

Originally Posted by markgray

Mine is still on the truck. Its so wet at the moment I can't see it moving for a few weeks.

You haven't had a change of heart by any chance. In my talks with the U.K buyer, he expressed regret about not buying the 6 foot machine.

I note the 6 footer in the U.K has sold. http://www.ebay.co.uk/itm/Churchill-...p2047675.l2557

I passed that lead on, maybe it was them.

Regards Phil.

C'mon Mark... Still waiting for close up pictures of your 6 footer... chop chop...

Originally Posted by Machtool

You haven't had a change of heart by any chance. In my talks with the U.K buyer, he expressed regret about not buying the 6 foot machine.

I note the 6 footer in the U.K has sold. http://www.ebay.co.uk/itm/Churchill-...p2047675.l2557

I passed that lead on, maybe it was them.

Regards Phil.

Hi Phil,

No change of heart at this end, in fact I still can't believe I managed to buy, it let alone at for the price paid.
I'm going away with work again at the end of the week so it won't be moving anywhere soon. No real hurry as the new shed won't be ready for some time. The shed builder I hired just had bilateral knee replacements and he is struggling to get going again. By the time he's ready it will be harvest time and then too hot so probably end up delayed till early next year. Plenty of time to get the foundations right!!

Richard pictures might be a way off as it is covered in shrink wrap and happily cocooned at the moment.

Did you still want a look at the arbor that came with mine? Can arrange some pictures if you like.

Originally Posted by markgray

Did you still want a look at the arbor that came with mine?

That remind's me, I managed to procure (Knock off) one or two wheel mounts. There hidden in the lashing box on the trailer. That's how I smuggled them out of Sydney.

I'll dig them out in the morning.

Phil.

We could do a deal Phil... How does an 8mm chain with a hook on it sound for a swap

Originally Posted by .RC.

How does an 8mm chain with a hook on it sound for a swap

I'll meet you at the border for the exchange. Goondiwindi Bridge, Sunrise. Come alone, or the wheel adapters get it.

I found these, they seem to have that short Morse female taper. Fairly narrow wheel gripping width less than half an inch. I'd guess they are for saucer wheels.

P1010314.JPGP1010312.JPGP1010313.JPG

Regards Phil.

Listen to Da Man Mark, chop chop! All being well I'll have the Type 0 finished this week and then I will have to get a 9" bed ready as a crash test dummy for you