HYGROL Series
 

Description

PSO Hygrol oils are blended from high quality mineral oils and a package of anti-oxidant, anti corrosion and anti foam additives. These oils meet the most stringent requirement of hydraulic lubricants. PSO Hygrol are readily available in ten viscosity versions to suit the ambient operating temperature requirement as well as the type and design of hydraulic pump and the operating pressure requirement of the system involved.
 

Applications

  • PSO Hygrol oils are an extensive range of premium quality hydraulic lubricants. Their application covers both mobile and stationary industrial system / equipment. By virtue of their being a good quality hydraulic fluid, then can also be used as an excellent general-purpose machine lubricants.
     

Benefits

  • Good oxidation stability.
  • Excellent protection against rusting of ferrous parts.Suitable for use over a wide temperature range.
  • Excellent general purpose bearing and circulating oils.
  • Resist against tendency to foam, thus minimize the risk of spongy and erratic pump operation.
     

Performance Standards

ISO VG 22,32,46,68,
100,150,220,
320,460 and 680.
Meets the performance requirement of: BS 489: 1999
DIN 51515 Part 1 

Typical Data

PSO HYGROL 22 32 46 68 100 150 220 320 460 680
Kinematic Viscosity 
@ 40°C, cSt ASTM D-445
22 32 46 68 100 150 220 320 460 680
Viscosity Index
ASTM D-2270
95 95 95 95 95 95 95 95 95 95
Flash Point (COC), °C
ASTM D92
180 195 205 215 230 240 250 255 270 280
Pour Point, °C
ASTM D97
-6 -6 -6 -6 -3 -3 -3 -3 -3 -3

The values mentioned are typical, depend upon the quality of the base oil available and cannot be used to reject the product. However these properties can be altered to meet the specific requirement

HYGROL AW Series
 

Description

PSO Hygrol AW oils are blended with high quality mineral oils and fortified with modern additives technology to inhibit corrosion, oxidation, wear, scuffing and release entrained air in the lubricating system. These oils are available in a range of viscosity grades to suit various ambient and operating temperature requirements as well as meet the type and design of hydraulic pump and operating pressures in the system.
 

Applications

  • PSO Hygrol AW oils are of premium quality containing highly effective anti-wear technology to prevent wear and scuffing of heavily loaded hydraulic system components. The oils meet the service requirements of Vickers vane type hydraulic pumps at stated speed and pressures.
  • PSO Hygrol AW can also be effectively used as general-purpose lubricant where mineral oil of high performance is required.
     

Benefits

  • High Anti-wear performance reduced component wear, particularly at high speed and temperature.
  • Extended oil service life due to thermal stability and oxidation resistance.
  • Good water tolerance and demulsificaiton characteristics, allowing rapid separation of condensation or water contamination.
  • Good rust and water corrosion protection of metal surfaces.
  • Low foaming and high air release tendencies.
     

Performance Standards

  • Denison HF-0, HF-1 and HF-2 (2005)
  • DIN 51524 Parts I & II
  • Cincinnati lamb P-68, P-69 & P-70
  • Eaton I-286-S3
     

Typical Key Properties:

PSO HYGROL AW 10 15 22 32 46 68 100 150
Kinematic Viscosity
@40°C cSt
100°C cSt
( ASTM D445)
10
2.65 
15
3.67 
22
4.30 
32
5.35 
46
6.67 
68
8.70
100
11.20
150
14.82 
Flash Point (COC), °C
ASTM D92
130 140 180 195 205 215 230 240
Viscosity Index
ASTM D2270
98 98 100 99 100 98 97 98
Pour Point, °C
ASTM D97
-6 -6 -6 -6 -6 -6 -4 -4

These typical results are of existing production, the future production will conform to PSO blending specifications hence any variation in these results will not affect the product performance.