ETH
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EIDGENÖSSISCHE TECHNISCHE
HOCHSCHULE ZÜRICH
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Institut für Leichtbau und
Selibahntechnik
Prof. Dr. H.-R. Meyer-Piening
Bereich Seilbahntechnik: Leitung Dr. G. Oplatka Fliederstrasse 23 Durchwahlnummer 01/256 33 87 Telefonzentrale 01/256 22 11 Postadresse: ETH-Zentrum (FLI) CH-8092 Zürich |
Masto Wire Service C/o Mr. Tor B. Krageboen Industrigaten 12 P.O. Box 1133 N – 4601 Kristiansand S. Zurich, 28th June 1983 El |
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Dear Sirs,
We herewith confirm the result of the lubrication test which was
carried out with your MASTO WIRE LUBRICATOR in the presence of the undersigned.
The test was arranged and realized according to our wishes, namely:
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Warr. –Seale rope, 216 wires, with steel core, ordinary lay, new, slightly
lubricated.
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rope tensioning force 80 kN, i.e. approx. 1/5 of the breaking force
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rope ends secured against torsion
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lubricant TEXANDO FO 20 from TEXACO
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speed approx 1,5 m/s
After lubrication
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the rope was rubbed dry from outside with a rag, including the space
between the strands;
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a piece of approx. ½ m length was cut out of the lubricated as well as
of the unlubricated part of the rope and packed up individually.
The quantity of grease which had penetrated was meeasured by us by
comparing the weight. The results can be found in the attaached table.
The table shows, among other things,
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that the quanity of lubricant inserted per m of the rope amounted to
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62 g in the rope
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20 g in the core
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7 g in each of the strands;
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that the quantity of lubricant which has entered the strand is
distributed as follows:
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outer layer 3,7 g
per m of the rope
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3rd layer 2,47 g per m of the rope
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2nd layer 0,65 g per m of the rope
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core wire 0,18 g
per m of the rope.
This means that the lubricant has penetrated into the very centre of
the strand a remarkably good result on which we want to congratulate you.
Yours faithfully
(Prof. Dr. G. Oplatka)