The speed reducer in my Stanley Parking Gate requires gearbox oil, agma 7 or agma 8. Please comment if you know where to find this type oil or brand name sold under. THanks.
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The acronym AGMA Stands for American Gear Manufacturers Association and the number code is their way of determining the viscosity requirement. An AGMA 7 lubricant is simply an ISO VG 460 gear lubricant and the AGMA 8 is an ISO VG 680 gear lubricant. Often there are letter codes added which will indicate additive packages such as EP for Extreme Pressure additive.
Need to pay attention to the components of the gear: if it is worm gear which is mainly made with bronze, the polyglycol's oil is a better choice. Mobil, Shell, Esso, BP, Caltex etc. all supply such oils.
Another excellent choice for bronze is Chevron's Ultra Gear with it's Borate EP package
Yeah Marco,
We agree with Widman, the borate chemistry appears best for worm drives, ensure viscosity correct for speed and load.
We are dissapointed with the results of running polyglycols in worm drives when viewing the type of wear debris manufactured under the microscope, if running hot very easy to move into light to moderate adhesive wear modes especially if enviromental contaminates gain entry and loading is high.
We agree with Widman, the borate chemistry appears best for worm drives, ensure viscosity correct for speed and load.
We are dissapointed with the results of running polyglycols in worm drives when viewing the type of wear debris manufactured under the microscope, if running hot very easy to move into light to moderate adhesive wear modes especially if enviromental contaminates gain entry and loading is high.
Good Brand EP oils without Sulphar Phosphorus Additive system by any reputed company is fine.
Polygycols will work fine in Dry and heat but will be disaster in Humid atmosphere.
Look for a good mineral oil and check for co efficient of friction for self locking in case of worm gears.
regards
Polygycols will work fine in Dry and heat but will be disaster in Humid atmosphere.
Look for a good mineral oil and check for co efficient of friction for self locking in case of worm gears.
regards
Agree fully with the comments re: AGMA and what it means.
What might not be common knowledge is that during discussions concerning the review of the AGMA/ANSI 9005-94 standard now 9005-E02 "Industrial Gear Lubrication". AGMA as a group has adopted the ISO viscosity designations as the standard nomenclature over their own AGMA published grades. The review group agreed to support the initiative in order to bring a more widely accepted understanding of the viscosity designations. In the new standard there is a table that has a column that refers to the "former AGMA Grade". So we should start to see reference to this now non-existent Grade and nomenclature start to head into the same abyss as SUS or SSU.
This standard is avaliable from AGMA @ www.agma.org for those with an interest.
regards.....
What might not be common knowledge is that during discussions concerning the review of the AGMA/ANSI 9005-94 standard now 9005-E02 "Industrial Gear Lubrication". AGMA as a group has adopted the ISO viscosity designations as the standard nomenclature over their own AGMA published grades. The review group agreed to support the initiative in order to bring a more widely accepted understanding of the viscosity designations. In the new standard there is a table that has a column that refers to the "former AGMA Grade". So we should start to see reference to this now non-existent Grade and nomenclature start to head into the same abyss as SUS or SSU.
This standard is avaliable from AGMA @ www.agma.org for those with an interest.
regards.....
Alan,
Can you please send me the new Agma viscosity chart, I will apreciate it.
lvelasco@vsconsultores.com.ve
Can you please send me the new Agma viscosity chart, I will apreciate it.
lvelasco@vsconsultores.com.ve
