the hydraulic oil hydraulic oil

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 No. 32 No. 46 No. 68 No. 100
46 is the viscosity of dilute point generally in winter, summer, with thick points (in addition to the machine explicitly requested)
The hydraulic oil is lubricating but not able to use
Hydraulic oil, in addition to engine oil, gear oil ca n not replace the burden of Holland (instead of the special oil) I said instead of a regular oil.
In fact, other less demanding machine can be used, it does not matter to pull

So many models who do not understand seemingly very complicated, in fact, manufacturers are using the same base oil out of tune, add some additives on the OK to pull. .

(A) the classification and grade division of the hydraulic oil:
A wide range of hydraulic oil, classification methods differ, a long time, it is customary to use classification, according to the type of oil, chemical composition or flammable classification. These categories reflect only oil earn Note, but the lack of systematic, it is difficult to understand the relationship between the oil and development.
1982 ISO lubricants, industrial oils and related products - Part IV, Group H classification, namely, ISO 6743/4 and 1982, of the system. More comprehensively reflects the relationship between the hydraulic oil developments.
GB 7631.2 a 87 equivalent using â…  S0 6743/4 the provisions of. Hydraulic oil will adopt a unified naming its general form is as follows:
Class - varieties of digital
L Hv 22
Of which: L - category (lubricants and related products, GB7631.1)
HV - species (low temperature anti-wear)
22 - grades (viscosity grade, GB3141)
Hydraulic oil viscosity grades made by the GB 3141 provides the equivalent of ISO viscosity classification to divide the grades to 40\\ C the center of the kinematic viscosity values.


(B) hydraulic oil specifications, performance and application:
GB/T7631.2 an 87 classification in HH, HL, HM, HR, H â…¤, HG hydraulic oils are mineral oil hydraulic oil, such oil varieties usage accounts for about 85% of the total amount of hydraulic oil above, the automobile and engineering machinery hydraulic systems commonly used in hydraulic oil also fall within this description.hydraulic hose sleeve
The following describes the specifications, performance and applications.
l.HH hydraulic oil
GB 7631.2 87 classification, HH hydraulic oil is a mineral oil without any additives. This oil has been included in the classification of being, but has not used in the hydraulic system. Because of poor stability of this oil, foaming, short service life of hydraulic equipment.
The 2.HL hydraulic oil (also known as general-purpose machine tools industrial lubricants)hydraulic hose end fittings
l) specifications HL hydraulic oil is higher by refining depth, neutral base oil plus antioxidant and anti-rust additives. HL hydraulic oil the 40C kinematic viscosity can be divided into 15
22,32,46,68,100 six grades.
2) use
HL hydraulic oil is mainly used for no special requirements for lubricants, th e ambient temperature in the machine tools of all kinds of more than O\\ C bearing housing, gear box, low pressure circulatory system or similar machinery and equipment of the circulatory system lubrication. Its use of time than machine oil may be extended more than doubled. The product has good rubber seal adaptability, its maximum use temperature of 80\\ C.
3) the quality requirements
(L) the appropriate viscosity and good viscosity-temperature performance. Small oil viscosity affected by temperature changes, temperature changes will not affect the normal work of the hydraulic system.
(2) has a good anti-rust, anti-oxidation stability.
(3) have better air release value, the anti-foam, water shed and the rubber seal adaptability.hydraulic adapter fittings
4) Precautions for Use
(L) before use to thoroughly cleaning the original hydraulic tank, remove the remaining oil, w aste oil and sediment, etc., avoid mixed with other oil products.
(2) This product does not apply to work under harsh conditions, lubrication requirements of the special machine tools. Higher gearing, hydraulic system and the rail, should be used in heavy-duty gear oil, anti-wear hydraulic oil or HG hydraulic oil fuel quality requirements.
(3) of this oil instead of machine oil for the lubrication of the circulatory system of general-purpose machine tools and other similar machinery and equipment, significant economic benefits can be extended drain Zhou paste, average savings of oil 1/3-1/2.
(3) anti-wear hydraulic oil (HM hydraulic oil)
l) specifications,
The anti-wear hydraulic oil (HM hydraulic oil) is evolved from rust, oxidation hydraulic oil on the basis of the alkaline zinc, alkaline zinc low, neutral zinc type and ash-free type products, according to 40\\ C kinematic viscosity divided into 22,32,46,68 four grades.
2) use
(L) anti-we ar hydraulic oil is mainly used for heavy-duty, medium pressure, high pressure vane pumps, piston pumps and gear pump hydraulic system, J Head YB a D25 vane pumps, the PF15 piston pumps, CBN-E306 gear pump, YB an E80/40 double pump hydraulic system.
(2) for medium voltage, high voltage engineering machinery, the introduction of the hydraulic systems of equipment and vehicles. Such as computer numerical control machine tools, tunnel boring machine, crawler cranes, hydraulic backhoe excavators and Shearer and other hydraulic systems.
(3) In addition to the high pressure hydraulic systems for various hydraulic pump can also be used for the lubrication of medium-duty industrial gear (worm gear, hypoid gear excluded). Their application ambient temperature of a 10\\ C-40\\ C. The product with nitrile rubber has a good adaptability.
3) the quality requirements
(L) t he appropriate viscosity and good viscosity-temperature properties, and hydraulic components to ensure that the work pressure and temperature changes have occurred under good lubrication, cooling and sealing.
(2) Good extreme pressure abrasion resistance to ensure that the pumps, hydraulic motors, control valves and cylinders in the friction pair in the high-pressure, high-speed under the harsh conditions of normal lubrication and reduce friction.
(3) The excellent oxidation stability, hydrolytic stability and thermal stability to resist the impact or effect of air, water and high temperature, high pressure and other factors, it is not easy to aging deterioration and prolong life.
(4) Good anti-foam and air release value, to ensure that the operation subject to the conditions of mechanical stirring intense foam quickly disappear; and can be mixed with oil in the air to be released in a relati vely short period of time, in order to achieve accurate, sensitive, smooth transmission of static pressure.
(5) good resistance to emulsification with water mixed with oil, rapid separation, in order to avoid formation of emulsions, corrosion and reduce the use of performance caused by the metal material of the hydraulic system.
(6) Good rust, in order to prevent metal surface corrosion.
4) Note
(L) to maintain the cleanliness of the hydraulic system, the timely removal of the sludge and metal shavings inside the tank.
(2) oil reference oil change, oil change when the various components of the equipment clean to prevent impurities such as mixed with oil, affect the results.
(3) the storage and use of containers and refueling tools must be clean, to prevent oil pollution.
(4) The oil is mainly applied to the hydraulic pump of the steel - steel friction pair. For other material friction pair of hydraulic pumps, pump load limits must have a pu mp manufacturer or fuel supply unit applies to recommend this product.
4.HR, HG hydraulic oil
HR hydraulic oil hydraulic oil is used in the ambient temperature changes in low-pressure hydraulic system. This oil has good antirust, antioxidant properties, and based on the viscosity index improver, oil has good viscosity-temperature characteristics. Type of oil due to the small dosage has not yet been vigorously developing, which I will not detail.
HG hydraulic oil was originally ordinary hydraulic oil in the 32G and 68G, formerly known as the hydraulic guideway oil, the product is added HM hydraulic oil on the basis of the oily agent or reduction of abrasive, a hydraulic oil. The oil not only has excellent rust, oxidation, anti-wear properties, but also has excellent anti-stick-slip. The products are suitable for the lubrication system of the machine tool hydraulic and rail combined or rail of machine tool lubrication systems and machine tool hydraulic systems. In the case of low-speed idler, anti climb to good effect. The hydraulic rail oil are in this category.
5.H â…¤, HS hydraulic oil (low-temperature hydraulic oil)
l) specification
This is two different grades of hydraulic oil, hydraulic oil for wide temperature range are in GB 7631.2 87. The two types of oil has a low pour point and excellent abrasion resistance, low temperature fluidity, and low temperature pumpability. HV, HS hydraulic oil, base oil is divided into two kinds of mineral oil and synthetic oil type, by 40. C kinematic viscosity, H â…¤ oil into 15\\ 22, is divided into the 32,46,68,100 six grades of HS oil 15,32,32,46 four grades.
2) use
(L) H â…¤ low temperature hydraulic oil is mainly used in cold regions or large temperature range and harsh working conditions of construction machinery, the introduction of equipment and vehicles in the pressure or high pressure hydraulic system. Such as CNC machine tools, cables, well pumps and ship c ranes, excavators, large cranes and other hydraulic systems. The use of temperature over a 30\\ C.
(2) HS low-temperature hydraulic oil is mainly used in cold area of ??the above equipment. The use of temperature to a 30\\ C.
3) the quality requirements
(L) the appropriate viscosity.
(2) Good extreme pressure and antiwear properties.
(3) excellent low temperature properties, pour point lower, which would ensure the construction machinery or equipment in cold regions or cold zone environment is easy to start and normal operation.
(4) excellent viscosity-temperature performance, viscosity index above 130 to ensure hydraulic equipment lubrication, cooling and sealing in the case of large temperature variation.
(5) good resistance to emulsification and anti-rust performance.
(6), good oxidation stability, hydrolytic stability and thermal stability.
4) Note
(L) low-temperature hydraulic oil is a hydraulic oil, anti-wear but also h as high and low temperature performance should pay attention to rational use.
(2) low-temperature hydraulic oil can not be used for the silver parts of hydraulic equipment.
(3) the HV oil and HS oil base oil, it is not mixed mix of eight so as not to affect performance. Other Considerations with HM hydraulic