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Oil Cleanliness in Industrial Gearboxes
- Thread starter GregPerry
- Start date
Greg,
I used to work for a company that did a lot of work with Falk out of Milwaukee, WI. The Falk standard for the two most common configurations of their gearboxes is as follows:
unfiltered splash lubricated: ISO 23/20/18
filtered with 40 micron wire filters: ISO 20/18/16
You can get a lot of information from the Pall corporation. They make industrial oil filters and are experts in oil contamination. Very helpful people and I'm sure they have a website.
Bill
I used to work for a company that did a lot of work with Falk out of Milwaukee, WI. The Falk standard for the two most common configurations of their gearboxes is as follows:
unfiltered splash lubricated: ISO 23/20/18
filtered with 40 micron wire filters: ISO 20/18/16
You can get a lot of information from the Pall corporation. They make industrial oil filters and are experts in oil contamination. Very helpful people and I'm sure they have a website.
Bill
gunnarhole
Mechanical
Greg,
ISO 4406 provides guidance in charcaterizing the cleanliness of lube oils. It is based upon counting the number of particles in given size ranges (>4 um, >6 um, >14 um) in a one ml sample. This methodology has been adapted for use by some equipment manufacturers.
NAS 1648(National Aerospace Standard)provides similar guidance but uses a single characterization number to describe the particle size count and distribution in a 100 ml sample.
Regards,
Gunnar
ISO 4406 provides guidance in charcaterizing the cleanliness of lube oils. It is based upon counting the number of particles in given size ranges (>4 um, >6 um, >14 um) in a one ml sample. This methodology has been adapted for use by some equipment manufacturers.
NAS 1648(National Aerospace Standard)provides similar guidance but uses a single characterization number to describe the particle size count and distribution in a 100 ml sample.
Regards,
Gunnar
- Thread starter
- #5
'geissele'
Read with interest your comments on FALK giving ISO codes on splash and filtered systems.
Why would one run a splash lubricated box four times dirtier than a filtered box?
I've seen 1500 HP FALK boxes (bearings) fail in two years which is the result of running a box at ISO 23/20/18 and once the oil reaches this level of contamination, no bearing will last....... ask any bearing manufacturer.
I think gearbox manufacturers forget their boxes run on bearings - have no doubt they only consider the gears.
Agree with your comments about PALL Corporation - a good source of information on contamination control.
Read with interest your comments on FALK giving ISO codes on splash and filtered systems.
Why would one run a splash lubricated box four times dirtier than a filtered box?
I've seen 1500 HP FALK boxes (bearings) fail in two years which is the result of running a box at ISO 23/20/18 and once the oil reaches this level of contamination, no bearing will last....... ask any bearing manufacturer.
I think gearbox manufacturers forget their boxes run on bearings - have no doubt they only consider the gears.
Agree with your comments about PALL Corporation - a good source of information on contamination control.
ferreiro
Mechanical
- Jan 6, 2002
- 43
- 0
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Hi icw,
please would you send to me the report you did.I had a major computer failure and the people who did the repair thought i had backed up so when they cleanded and installed a new hard drive i lost all.
many thanks
robert
ferreiro@mweb.co.za
please would you send to me the report you did.I had a major computer failure and the people who did the repair thought i had backed up so when they cleanded and installed a new hard drive i lost all.
many thanks
robert
ferreiro@mweb.co.za
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