Peter from Holland
Diamond
- Joined
- Jan 15, 2005
- Location
- The Netherlands
Refering to the "Iron Tour" post 107 Should Ruemema advertise with prices or not
I am referring to that post of TNB " iron tour 2015"
http://www.practicalmachinist.com/v...ur-2015-lots-pics-301415/?highlight=iron+tour
And then especialy post 107 where we visited Mr Kramer The top rebuilder of Schaublin and Leinen lathes
I do some bussiness with him now and then and last week I offered him a Schaublin 135
And off coarse we talked about bussiness a bit
Also about the 2 machines he still has in stock A Schaublin 135 and a Leinen DLZ 140
Both supperb machines
He does advertise these machines but without prices
I told him that IMHO he better states a price The reasson beeing that customers for these machines know they do not come cheap and on seeing the price they know they are on the right track
So I would hear some opinions about this with some arguments
Who is in favor of not advertising with prices and who is in favor of mentioning the prices in advertising
To know what we are talking about down here you find post 107 of TNB (with some pictures removed for sizereassons)
Peter from Holland
I am referring to that post of TNB " iron tour 2015"
http://www.practicalmachinist.com/v...ur-2015-lots-pics-301415/?highlight=iron+tour
And then especialy post 107 where we visited Mr Kramer The top rebuilder of Schaublin and Leinen lathes
I do some bussiness with him now and then and last week I offered him a Schaublin 135
And off coarse we talked about bussiness a bit
Also about the 2 machines he still has in stock A Schaublin 135 and a Leinen DLZ 140
Both supperb machines
He does advertise these machines but without prices
I told him that IMHO he better states a price The reasson beeing that customers for these machines know they do not come cheap and on seeing the price they know they are on the right track
So I would hear some opinions about this with some arguments
Who is in favor of not advertising with prices and who is in favor of mentioning the prices in advertising
To know what we are talking about down here you find post 107 of TNB (with some pictures removed for sizereassons)
Peter from Holland
We're reaching the end of the journey now...
That was a great experience and I hope you enjoyed sharing it with us, but as i told you earlier in this thread, the best is yet to come.
We didn't you tell about the most thrilling experience of that trip yet...our visit at RUEMEMA !
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That is something we really wanted to keep for the end, as a dessert...
This shop is specialized in the rebuidling of ultra-high precision manual lathes.
Rüdiger Kramer, who runs the firma Ruemema, works on the Schaublin 135, 150 and 160, and on the Leinen LZ140 only,
Those machines were probably amongst the finest manual lathes ever produced, and of a quality that is not manufactured anymore today.
They are thus a solid starting point to work on and beeing able to offer customers the best machines money can buy in the end.
Basically, when a machine leaves Ruemema's shop, it is new and in fact, probably better than a new one.
Each and every machine is dismantled down to the smallest bit.
Each part is inspected and if it doesn't match Herr Kramer's standards, replaced by a new one. That includes bearings, spindle bearings, screws, gears, absolutely everything. Everything.
When we were here, a Schaublin 150b was just to be finished
It is a very rare machine that has the ability to cut threads fully automaticaly in cyles. Very few were made before the CNC era killed the need for such beasts.
Man. What a beauty !I don't think I had ever seen such a beaufitul lathe before. And althought it is hard to report with words, you recognize, you feel the quality ot the machine within the first handwheel revolution. It's a mix of smoothess and tightness in a perfectly light movement.
Hard to describe really.
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The Schaublins and the Leinen are machines for wich it is still possible to get new spare parts, wich is mandatory. Rüdiger told us that he typically spends as much as 20.000 euros (twenty thousands) euros in spare parts to rebuild a Schaublin 150. Did I hear oh-my-Gawd ?
Rüdiger told us that a customer of his, who cringed about the price of parts may be, was offered to get charged for the labor only, but would have to provide all the required spares on his own. Wich turned out to be at least as expensive.
Rüdiger showed us a simple -well, what seems like a simple- locking nut that comes at the rear of the 150 spindle assembly.
This is basically a threaded ring with provision to secure it on the spindle.
But that part is treated and precision ground to ensure a dead perfect perpendicularity of the thrust face with regard to the spindle axis, and Schaublin asks more than 500 euros for it...
One wouldn't want to compromise the ultra precise spindle assembly with lesser quality parts and after all, it is not sure that manufacturing that part with the same level of quality would be much cheaper so of course, things get a little more understandable after you get in that kind of details...
But beauty is not only skin deep. The ways are ground and scraped in-house by Herr Kramer.
Ruemema is located in a residential area, wich is a good thing as Rüdiger explained to us, since the vibrations of the heavy trafic of an industrial zone could disturb the grinding process.
Rüdiger did insist on the grinding of the ways beeing a very delicate operation, that requires a lot of time and care, and likes to have it "under control".
Please don't pay attention to what may seem as discoloration on the ways, since it was only oil sprayed on them to prevent any risk of corrosion. The surface of those ways was per-fect.
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After seeing the kind of tolerances he achieves with his machines as well as his incredible inspection equipment, I'm a believer.
Rüdiger offered us to make the test of putting any member of his machines under load with an indicator resting on it.
We did. Trying to lift the carriage of the Schaublin 150 or to push hard on the coumpound slide.
The needle barely moved, although the slides were absolutely, perfectly smooth all over their travel and the indicator was a... Mahr Millimess ! (thousands of millimeter indicator, that is).
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Of course, one of the questions that come to mind when talking about such tolerances for a lathe, is who the heck is in need for such accuracy for what remains -turning- some kind of a roughing process ?
In that regard, our meeting with Herr Kramer was an eye opener to me. He explained to us that there are some very special applications in wich that level of precision allow his customers to make very special parts that would not be doable another way.
He told us about customers of his who are in high end optics and who have to turn hard-anodized parts to an extremely high level of accuracy - diameter-concentricity-perpendicularity-roundness. Hard anodization is a process wich does not goes along well with grinding, Rüdiger explained to us.
Think about the level of accuracy one has to expect from a rifle scope to allow shooting at distances in the range of 2000m... That makes sense.
We also talked about the making of measuring instruments for the field of common rail injection for diesel engines. Devices that require a very high level of accuracy, such as no seal can be used, but also have to handle pressures as high as 2000 atm...
To give you an idea of the kind of accuracy one can expect from Ruemema's machines, here's the Prüfprotokoll of the Schaublin 150b that was just beeing finished as we were at Rüdiger's shop :
I can also encourage you to browse his website, where he describes his work and his machines. it is well worth a visit and you'll learn a lot about the dedication of this man to quality and precision : http://www.ruemema.de/
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