Hydraulics
About Hydraulics
Hydraulic or hydraulic oil lubricants are relatively simple lubricants that are used in earthmoving and industrial machinery such as excavators, cranes, hydrostatic drive systems, etc. to transfer energy from hydraulic pumps to hydraulic motors or hydraulic pistons.
As simple as the hydraulic oils, they must be made of a good and stable base material and a composite chemical additive alloy to withstand the pressure and high temperature that are encountered in the hydraulic circuits. They must also have chemical stability so as not to create residue from temperature changes and to protect the internal parts from both the cavitation and the wear from the friction between the interior parts.
Types of Hydraulic Oils
Hydraulic oils are essentially divided into two major categories, HM / HLP and HVLP. The difference between the two types is their viscosity index. The first type is between 85 and 100 while the HVLP is between 130 and 140. The higher the viscosity index of a lubricant, the less it is affected by the temperature difference, ie it does not so much thin at higher temperatures, nor does it thicken at low temperatures. HVLP type lubricants were originally built for ships: a journey can start from Ecuador and end up at the North Pole. But one can easily calculate the benefits of these oils and we have seen them in more applications over the last few years.
Other types of lubricants used in hydraulic circuits
Besides the above oils specially made for use in hydraulic circuits, we can meet other types of oils used in hydraulic machine circuits for various reasons:
- For homogenizing lubricants.
- The hydraulic circuit is a small part of a machine that uses oil of another type.
- In simple systems with oil pumps suitable for thicker lubricants.
An example is the Caterpillar earthmoving machine manufacturer that uses SAE10w and / or SAE15w-40 engine types in place of hydraulic oil. Typically, these engine oils must meet the CAT TO-2 or the new TO-4 specifications.
The Bobcat Earthmovers manufacturer uses a lubricant for both transmission and plumbing in skid-steer loaders. Although Bobcat insists on the use of its original lubricant, it is essentially a UTTO type lubricant.
Another example is the hydraulic circuit in agricultural tractors using a lubricant (UTTO type, typically SAE10w-30) for transmission and hydraulic circuit. In older agricultural tractors, a STUO-type lubricant (typically SAE15w-40) was used which an oil was suitable for the tractor's machine, transmission, brakes and hydraulics.
Special Hydraulic Oils
Machines that work under difficult and special conditions typically require special lubricants. Some of the special hydraulics manufactured by CEPSA are:
Organic plumbing
CEPSA Bio Oil HM-S
For works in sensitive environmental areas such as parks, rivers, lakes and the sea, greenhouses and agricultural food production plants, CEPSA has the organic hydraulic BIO HM-S, which yields the same as ordinary hydraulic oils, due to the sophisticated chemical additives, their contact with the environment poses a much smaller problem since they are more easily broken down and absorbed by the soil.
Non-flammable hydraulics
CEPSA FUNDICOL HFC
It is a fire-resistant family of fire-resistant mixtures which are mixtures of water and glycol and are commonly used to work in confined spaces where a fire would have devastating effects such as underground quarries and foundries and where there is a risk of explosion or fire.
Hydraulic Oil Liquids
The fluidity of hydraulic oils is measured in Cst (centistokes) at the International Standards Office (VO) scale. Thus, the most common hydraulic oil, '68', has an ISO VG68 fluidity and equates to a fluid with about one SAE20 engine. Below are listed the main hydraulic fluid oils and their correlations with other types of lubricants:
Hydraulic ISO VG32 SAE10w Engine Oil Dexron-II Automatic Oil
Hydraulic ISO VG46 SAE15w Engine
Hydraulic ISO VG68 SAE20 engine
Hydraulic ISO VG100 SAE30 Engine Oil SAE80w gear oil
CEPSA Hidraulico HM
Improved anti-friction properties and a stable chemical composition, meets the demands of the most modern hydraulic and hydrostatic circuits. It does not produce residues even in extreme temperature changes and has increased resistance to oxidation and moisture.
Liquids: ISO 10/15/22/32/46/68 & 100
Specifications DENISON HF-0/HF-1/HF-2, DIN 51524 Part 2, Vickers I-286 & M-290-S, AFNOR NF-E 48603-HM, Cincinati-Milacron P-68/-69/-70, ISO 6743-4/HM
CEPSA Hidromax
High Viscosity Hydraulic Oil, based on high-distillation paraffin oils and selected chemical additives for excellent anti-friction performance and high resistance to oxidation. It keeps its fluid constant for long periods of time, reducing the frequency of oil replacement.
Suitable for use in hydraulic circuits of earthmoving machines, cranes and winches where there may be a wide variation in the temperature of the oil.
Liquidities: ISO 46 & 68
Specifications DIN 51524 Part 3 HVLP, VICKERS I-286-S y M-2950-S, ISO 6743-4 (HV)
CEPSA Hidrostar HVLP
High Viscosity Hydraulic Oil, based on high-distillation paraffin oils and selected chemical additives that give it great friction protection and high resistance to oil oxidation. Its composition incorporates a viscosity index improver that allows it to maintain its fluidity constant over the useful life of the lubricant, with excellent filtering results and good moisture resistance. It is recommended for use in high performance hydraulic circuits that require high viscosity hydraulic oil and high oxidation resistance at high operating temperatures. Suitable for applications such as servo valves, robotics and circuits with digital control.
Liquids: ISO VG 32, 46, 68
Specifications DENISON HF-0, HF-1 / HF-2, DIN 51524 Part 3 HVLP, VICKERS I-286-S & M-2950-S, AFNOR NFE 48603HV, ISO 6743-4 HV, CINCINNATI MACHINE P68 / P69 / P70, AFNOR FILTERABILITY (dry and wet)
CEPSA Hidropoc
Hydraulic high viscosity oil for earthmoving and mining machinery where POCLAIN specification oil is required. It is suitable for machines from manufacturers POCLAIN and CASE . Excellent quality and performance hydraulic oil certified by POCLAIN that exceeds their strict requirements. It has the characteristic blue color.
Liquids: ISO VG46
Specifications: POCLAIN (P110 32-03J), VICKERS I-286-S & M-2950-S, DIN 51524 Part 3 (HVLP), ISO 6743-4 HM, AFNOR NFE 48-603 (HV).
CEPSA Hidrotrans OP 10W20
High quality multi-stage hydraulic oil for earthmoving and mining machinery requiring high pressure hydraulic oil (EP) with a high friction protection index. It is especially recommended for heavy work and its multi-nature makes it ideal for machines with frequent stops. It also reduces leaks in relation to a simple hydraulic oil and maintains its lubricating capability even at high operating temperatures.
Specifications: DIN 51524 part 2 (HLP), VICKERS I-286-S & M-2950-S, ISO 6743-4 HM
CEPSA Bio Oil HM-S
Biodegradable synthetic hydraulic oil of the latest technology. Due to its careful formula, it eliminates the environmental impact from its use and at the same time satisfies the basic requirements of a hydraulic oil. It allows the machine to operate in a Euro range of operating temperatures as it maintains its excellent lubricating capability, friction protection and anti-shock protection. It is especially recommended for machines working under heavy conditions in environmentally sensitive areas.
Liquids: ISO VG 32, 46, 68
Specifications: VDMA 24568 Class HEES, ISO 15380 Class HEES
Kuttenkeul Hydraulic Oil
Kuttenkeul BAROS
Optimum alloyed, high performance hydraulic oils with broad field of application within the whole industry. Good viscosity-temperature behaviour, high ageing stability, reliable corrosion protection and excellent wear protection under extreme loads are key characteristics of the effective additive package that implements the quality virgin base oils used in the production of the Baros hydraulic oil series.
Tested for high air and water separation and neutrality towards sealing materials.
Available viscosities: ISO VG 10 / 22 / 32 / 46 / 68 / 100
Key specifications DIN 51524-Part2, MIL H24 459, AFNOR NF E48-603(HM), BOSCH Rexroth, CETOP RP91H, C-M P70, DENISON HF-0/HF-2, EATON VICKERS M2950-S/I-286-S3, SAUER DANFOSS 520L0463, US STEEL 126/127, VDMA 24318
Kuttenkeul BAROS -HVI
Mineral high-performance hydraulic oil with very good viscosity temperature behaviour applicable for high pressure hydraulic systems being exposed to changing temperatures. It'shigh viscosity index (152) and high pressure susceptibility offers reliable wear protection, oxidation and corrosion protection, excellent air separation and no foaming with high ageing stability.
Neutrality towards sealing materials, resistance to water and good filtration.
Extremely high operating reliability of hydraulic system under high loads and a wide temperature range.
Available viscosities: ISO VG 22 / 32 / 46 / 68
Key specifications:DIN 51524/Part 3, AFNOR NF E48-603(HM, HV), BOSCH Rexroth,CETOP RP91H, DENISON TP 02100,EATON VICKERS M 2950-S, I-286-S, US STEEL 126-127, VDMA 24318
Hydraulics
About Hydraulics
Hydraulic or hydraulic oil lubricants are relatively simple lubricants that are used in earthmoving and industrial machinery such as excavators, cranes, hydrostatic drive systems, etc. to transfer energy from hydraulic pumps to hydraulic motors or hydraulic pistons.
As simple as the hydraulic oils, they must be made of a good and stable base material and a composite chemical additive alloy to withstand the pressure and high temperature that are encountered in the hydraulic circuits. They must also have chemical stability so as not to create residue from temperature changes and to protect the internal parts from both the cavitation and the wear from the friction between the interior parts.
Types of Hydraulic Oils
Hydraulic oils are essentially divided into two major categories, HM / HLP and HVLP. The difference between the two types is their viscosity index. The first type is between 85 and 100 while the HVLP is between 130 and 140. The higher the viscosity index of a lubricant, the less it is affected by the temperature difference, ie it does not so much thin at higher temperatures, nor does it thicken at low temperatures. HVLP type lubricants were originally built for ships: a journey can start from Ecuador and end up at the North Pole. But one can easily calculate the benefits of these oils and we have seen them in more applications over the last few years.
Other types of lubricants used in hydraulic circuits
Besides the above oils specially made for use in hydraulic circuits, we can meet other types of oils used in hydraulic machine circuits for various reasons:
- For homogenizing lubricants.
- The hydraulic circuit is a small part of a machine that uses oil of another type.
- In simple systems with oil pumps suitable for thicker lubricants.
An example is the Caterpillar earthmoving machine manufacturer that uses SAE10w and / or SAE15w-40 engine types in place of hydraulic oil. Typically, these engine oils must meet the CAT TO-2 or the new TO-4 specifications.
The Bobcat Earthmovers manufacturer uses a lubricant for both transmission and plumbing in skid-steer loaders. Although Bobcat insists on the use of its original lubricant, it is essentially a UTTO type lubricant.
Another example is the hydraulic circuit in agricultural tractors using a lubricant (UTTO type, typically SAE10w-30) for transmission and hydraulic circuit. In older agricultural tractors, a STUO-type lubricant (typically SAE15w-40) was used which an oil was suitable for the tractor's machine, transmission, brakes and hydraulics.
Special Hydraulic Oils
Machines that work under difficult and special conditions typically require special lubricants. Some of the special hydraulics manufactured by CEPSA are:
Organic plumbing
CEPSA Bio Oil HM-S
For works in sensitive environmental areas such as parks, rivers, lakes and the sea, greenhouses and agricultural food production plants, CEPSA has the organic hydraulic BIO HM-S, which yields the same as ordinary hydraulic oils, due to the sophisticated chemical additives, their contact with the environment poses a much smaller problem since they are more easily broken down and absorbed by the soil.
Non-flammable hydraulics
CEPSA FUNDICOL HFC
It is a fire-resistant family of fire-resistant mixtures which are mixtures of water and glycol and are commonly used to work in confined spaces where a fire would have devastating effects such as underground quarries and foundries and where there is a risk of explosion or fire.
Hydraulic Oil Liquids
The fluidity of hydraulic oils is measured in Cst (centistokes) at the International Standards Office (VO) scale. Thus, the most common hydraulic oil, '68', has an ISO VG68 fluidity and equates to a fluid with about one SAE20 engine. Below are listed the main hydraulic fluid oils and their correlations with other types of lubricants:
Hydraulic ISO VG32 SAE10w Engine Oil Dexron-II Automatic Oil
Hydraulic ISO VG46 SAE15w Engine
Hydraulic ISO VG68 SAE20 engine
Hydraulic ISO VG100 SAE30 Engine Oil SAE80w gear oil
CEPSA Hidraulico HM
Improved anti-friction properties and a stable chemical composition, meets the demands of the most modern hydraulic and hydrostatic circuits. It does not produce residues even in extreme temperature changes and has increased resistance to oxidation and moisture.
Liquids: ISO 10/15/22/32/46/68 & 100
Specifications DENISON HF-0/HF-1/HF-2, DIN 51524 Part 2, Vickers I-286 & M-290-S, AFNOR NF-E 48603-HM, Cincinati-Milacron P-68/-69/-70, ISO 6743-4/HM
CEPSA Hidromax
High Viscosity Hydraulic Oil, based on high-distillation paraffin oils and selected chemical additives for excellent anti-friction performance and high resistance to oxidation. It keeps its fluid constant for long periods of time, reducing the frequency of oil replacement.
Suitable for use in hydraulic circuits of earthmoving machines, cranes and winches where there may be a wide variation in the temperature of the oil.
Liquidities: ISO 46 & 68
Specifications DIN 51524 Part 3 HVLP, VICKERS I-286-S y M-2950-S, ISO 6743-4 (HV)
CEPSA Hidrostar HVLP
High Viscosity Hydraulic Oil, based on high-distillation paraffin oils and selected chemical additives that give it great friction protection and high resistance to oil oxidation. Its composition incorporates a viscosity index improver that allows it to maintain its fluidity constant over the useful life of the lubricant, with excellent filtering results and good moisture resistance. It is recommended for use in high performance hydraulic circuits that require high viscosity hydraulic oil and high oxidation resistance at high operating temperatures. Suitable for applications such as servo valves, robotics and circuits with digital control.
Liquids: ISO VG 32, 46, 68
Specifications DENISON HF-0, HF-1 / HF-2, DIN 51524 Part 3 HVLP, VICKERS I-286-S & M-2950-S, AFNOR NFE 48603HV, ISO 6743-4 HV, CINCINNATI MACHINE P68 / P69 / P70, AFNOR FILTERABILITY (dry and wet)
CEPSA Hidropoc
Hydraulic high viscosity oil for earthmoving and mining machinery where POCLAIN specification oil is required. It is suitable for machines from manufacturers POCLAIN and CASE . Excellent quality and performance hydraulic oil certified by POCLAIN that exceeds their strict requirements. It has the characteristic blue color.
Liquids: ISO VG46
Specifications: POCLAIN (P110 32-03J), VICKERS I-286-S & M-2950-S, DIN 51524 Part 3 (HVLP), ISO 6743-4 HM, AFNOR NFE 48-603 (HV).
CEPSA Hidrotrans OP 10W20
High quality multi-stage hydraulic oil for earthmoving and mining machinery requiring high pressure hydraulic oil (EP) with a high friction protection index. It is especially recommended for heavy work and its multi-nature makes it ideal for machines with frequent stops. It also reduces leaks in relation to a simple hydraulic oil and maintains its lubricating capability even at high operating temperatures.
Specifications: DIN 51524 part 2 (HLP), VICKERS I-286-S & M-2950-S, ISO 6743-4 HM
CEPSA Bio Oil HM-S
Biodegradable synthetic hydraulic oil of the latest technology. Due to its careful formula, it eliminates the environmental impact from its use and at the same time satisfies the basic requirements of a hydraulic oil. It allows the machine to operate in a Euro range of operating temperatures as it maintains its excellent lubricating capability, friction protection and anti-shock protection. It is especially recommended for machines working under heavy conditions in environmentally sensitive areas.
Liquids: ISO VG 32, 46, 68
Specifications: VDMA 24568 Class HEES, ISO 15380 Class HEES
Kuttenkeul Hydraulic Oil
Kuttenkeul BAROS
Optimum alloyed, high performance hydraulic oils with broad field of application within the whole industry. Good viscosity-temperature behaviour, high ageing stability, reliable corrosion protection and excellent wear protection under extreme loads are key characteristics of the effective additive package that implements the quality virgin base oils used in the production of the Baros hydraulic oil series.
Tested for high air and water separation and neutrality towards sealing materials.
Available viscosities: ISO VG 10 / 22 / 32 / 46 / 68 / 100
Key specifications DIN 51524-Part2, MIL H24 459, AFNOR NF E48-603(HM), BOSCH Rexroth, CETOP RP91H, C-M P70, DENISON HF-0/HF-2, EATON VICKERS M2950-S/I-286-S3, SAUER DANFOSS 520L0463, US STEEL 126/127, VDMA 24318
Kuttenkeul BAROS -HVI
Mineral high-performance hydraulic oil with very good viscosity temperature behaviour applicable for high pressure hydraulic systems being exposed to changing temperatures. It'shigh viscosity index (152) and high pressure susceptibility offers reliable wear protection, oxidation and corrosion protection, excellent air separation and no foaming with high ageing stability.
Neutrality towards sealing materials, resistance to water and good filtration.
Extremely high operating reliability of hydraulic system under high loads and a wide temperature range.
Available viscosities: ISO VG 22 / 32 / 46 / 68
Key specifications:DIN 51524/Part 3, AFNOR NF E48-603(HM, HV), BOSCH Rexroth,CETOP RP91H, DENISON TP 02100,EATON VICKERS M 2950-S, I-286-S, US STEEL 126-127, VDMA 24318