What is the difference between ISO and AW hydraulic oil?

Looking at the above array of oils: R&O stands for rust and oxidation - mineral oils with improved anti-rust and anti-oxidation properties. The ISO classification for these oils is HL. AW stands for anti-wear - R&O oils with an anti-wear additive package.

Is ISO 46 the same as AW 46 hydraulic oil?

AW 46 hydraulic fluids have an International Standards Viscosity Grade or ISO VG of 46. This is the thickness of the fluid tested at 40 degrees Celsius. ISO VG 46 is the most popular grade due to its middle grade flow properties with a thickness that is equivalent to a SAE 15 weight lubricant.

Is AW 32 the same as ISO 32 hydraulic oil?

ISO 32 is simply a viscosity range for industrial oils, normally used in hydraulics, it says nothing about any additives that may be present. AW 32 is required to contain anti wear agents, it may also contain other additives, but may be harmful in certain applications.

Is ISO 46 the same as AW 32?

Anti-wear grades

For instance, you may see AW 46 hydraulic oil while looking around. These oils perform at the same grade as their ISO counterparts. An AW 32 hydraulic oil is going to be at 32cSt at 40°C for instance. The difference here is that there are additives contained within the oil.

What does ISO mean in hydraulic oil?

ISO VG stands for “International Standards Organization Viscosity Grade” and is reported in numbers ranging from 2 all the way up to 1500. This number is critical because a lubricant's viscosity is the single most important factor when selecting the right oil for your machinery.

What is an Anti-Wear (AW) Hydraulic Oil?

Is ISO the same as AW?

The ISO classification for these oils is HL. AW stands for anti-wear - R&O oils with an anti-wear additive package. The ISO classification for these oils is HM. MV stands for multi-viscosity.

Is AW 68 the same as ISO 68?

AW 68 hydraulic fluids have an International Standards Viscosity Grade or ISO VG of 68. This is the thickness of the fluid tested at 40 degrees Celsius.

What ISO is universal hydraulic oil?

Cross reference Universal Tractor Hydraulic Fluid

The ISO grade (32, 46, 68) fluid to be used should fall within the range of the optimum cSt listed in the right-hand column of the spec sheet.

Is hydraulic oil better 32 or 46?

46 is medium and No. 68 is thicker. Generally speaking, if the temperature is low in winter, use #32 & #46 hydraulic oil with a lower viscosity, and use #68 hydraulic oil with a higher viscosity in summer.

What is AW ISO 32 hydraulic oil used for?

ISO 32, 46 and 68 grades are most commonly used for hydraulics with vane-, piston-, or gear-type pumps, especially where pressures exceed 1000 psi. They can also be used to lubricate lightly loaded reciprocating compressors.

What does AW 32 stand for?

For example, AW 46 hydraulic oil is used to operate the hydraulic systems in off road equipment such as dump trucks, excavators, and backhoes, while AW 32 hydraulic oil colder weather application, like in a snow plow's pump.

Can you mix aw32 and aw46 hydraulic oil?

"Is it all right to mix an R&O hydraulic oil with an AW hydraulic oil in a hydraulic application?" Mixing oils with different additive packages is never recommended. Doing so could compromise the additive performance of both constituents, cause corrosion of component surfaces and lead to increased mechanical wear.

Is all hydraulic oil the same?

Each hydraulic oil is different and based on its intended application and additives package, it can offer different benefits. In general, mineral-oil or synthetic-oil based hydraulic oils can provide the following benefits: Protection against corrosion and rust.

What's the difference between ISO 46 and AW 46?

The vicosity is simply referred to by ISO 46. AW stands for Anti Wear. AW 46 is the same as AW 46.

Is AW 32 the same as 10W?

SAE 10W is equivalent to ISO 32, SAE 20 is equivalent to ISO 46 and 68, and SAE 30 is equivalent to ISO 100. As you can see, there is a bit of a difference between ISO 68 and SAE 30. The viscosity of the fluid largely determines the oil temperatures within which the hydraulic system can safely operate.

Can you mix different grades of hydraulic oil?

CAN I MIX HYDRAULIC FLUIDS? As far as possible, it is always best to avoid mixing different hydraulic fluids. This is because the technical properties could be spoiled by chemical reactions between different additives.

What happens if you use the wrong hydraulic fluid?

Whether it is changing hydraulic filters too often or using the wrong type of hydraulic fluid, these errors can lead to serious problems such as unnecessary maintenance costs, increased repair costs, system downtime, premature wear of components, and even catastrophic failure.

What happens if hydraulic oil is too thick?

A thick oil can damage the hydraulic pump, leading to breakdowns in the worst cases. The solution is to use lower-viscosity products. These ensure a reliable start also during the cold season, they lubricate better and maintain their performance over time.

Does it matter what hydraulic fluid you use?

Most hydraulic systems can operate using many different fluids, including multigrade engine oil, automatic transmission fluid and more conventional antiwear (AW) hydraulic oil. Which oil or fluid you choose depends on your equipment and how you plan to use it.

What weight is AW 32 hydraulic oil?

AW32 is approximately a 10 weight oil with the additives ▪ AW46 is approximately a 15 weight oil with the additives ▪ AW68 is approximately a 20 weight oil with the additives AW –provides many of the advantages of premium hydraulic oil at a moderate price.

What SAE is hydraulic oil?

Hartland Hydraulic SAE 10 and SAE 20 were expressly designed for hydraulic systems on off-road machinery such as the yellow machines made by Caterpillar™ and many others. It is customary in this industry to use 10 weight engine oils for hydraulic fluids.

What is the viscosity of AW 46 hydraulic oil?

Manufacturers generally measure viscosity in centistokes (cSt). At 40 degrees Celsius, AW 46's viscosity is 46 cSt, giving it its name. At 100 degrees Celsius, its viscosity thins out to 6.8 cSt.

What is ISO 32 hydraulic oil?

Hydraulic 32 is part of Crown Oil's range of premium-grade mineral-based hydraulic oils with good anti-wear properties providing protection in the most demanding of systems while still meeting ISO standards for hydraulic oil. This hydraulic fluid is rust, corrosion and oxidation inhibited.