Brugger Testing vs. Timken Testing

There is no correlation between the Brugger and Timken test.

I could not understand from your question why you need the Brugger test. Is it a specification that you need to supply? send a sample to a lab that does the Brugger test i.e. wearcheck. http://www.wearcheck.de/en_wc/04prfv/verfa/ve29.html or offer a more reliable and reproducible load and lubricity tests like the SRV from www.optimol-instruments.de DIN 51834 that is the most accurate tribometer out there. Contact Optimol Instruments in Munich, Germany for ousourced testing.

Better than Timken and standard that you will surely find in Turkey is the Four Ball. Look for the Load Wear Index (not the welding load) acc ASTM D 2266, 12.7 mm diameter steel balls, 75°C with top ball rotated at 1200 rpm under 392 N force for 60 min. Measure average wear scar worn into the fixed balls.

I guess that nobody would accept Timken test results due to its poorer reproducibility and repeatability than the 10% that Brugger claims to have.

REASON FOR BRUGGER TEST IS THAT PRESS MANUFACTURER STIPULATES THIS IN THE OPERATORS HAND BOOK AND INSISTING THIS IS THE STANDARD THEY WORK TO

REASON FOR TIMKEN TEST IS THIS IS THE NEAREST EQUIVALENT THAT THE OIL SUPPLIER CAN PROVIDE.

Timken is not an equivalent to the Brugger test.

If you are serious in buying from him if he matches the quality standard Mueller Weingarten requires, then ask your oil supplier to send a sample to the wearcheck lab that performs this test and if it passes the test you buy from them. We are talking here about large volumes, and the cost of the test is peanuts...unless they know it would not pass. Is the price they are offering so advantageous to you that you would be willing to pay for the test? Isn't the overhaul cost of the press so expensive that you have to test the performace of the oil you are using there?

again thanks to your prompt reply and advise

problem the company already bought the press from weingarten and agreed with oil company on aw 46 all before i became involved with this company

now as you say there is a very large volume of oil total 100 ton and with the economic crisis the company will not change the oil

the engineer who was originaly involved with this project will not admit his mistake and is adiment that off line filtration will solve the problem also as oil company insist that there test show there is no problem i am facing a loosing battle

will arrange to send samples to wear check in the meantime can you please pass your comments on filtering the oil ( with water absorbing element to 3 or even 1 micron particle) then we can wait for the results from wearcheck to decide if additives will be required

again thanks for all your help and i would like to keep in contact with you maybe we can help each other

I understand. I can advise to check the Brugger test result and see the difference to what you got in the press. Brugger test require more Sulphur in the additives, but the other oil might do a good job too.

For filtration, I can suggest to use magnetic filters. There is a new technology for field compression that makes the strongest magnetic fields for extracting particles under 1 micron from viscous oils. I can send you some information on that. Magnetic filtration is a complement to the regular filters and extract all particles that are generated in the startup and creat abrasion when floating in the system.

I sent you a private message asking for your email address. I will reply to it with information for the suggested filter. That will alleviate also the wear rate in the system since most wear particles are of the size that passes through the fine filters. Tell me the volume of oil in the different tanks.

we are still having problems with brugger test results

after testing used oil we got a value of 14N/mm sq how can we rectify this

Thanks for reply i did send you my email adress toscarsert @ mynet.com would like to keep in touch

Dear Sir,

we are located in turkey and has the brugger test equipment.

if you are still interested please do not hesitate to contact us:

De-Ka Kimya San. ve Tic. A.S.

Dipl.-Ing. Ozgur Kaytancioglu

www.dekakimya.com.tr

tel: +90 224 484 2832

fax: +90 224 484 2833

mobil +90 532 640 2823