- HM/HLP hydraulics
ISO VG 22
Mineral hydraulic fluid for industrial and mobile equipment
Eaton Vickers Brochure 694 — fluid requirements
The Vickers brochure with the classic requirements for hydraulic oils in vane and piston pumps: cleanliness, antiwear, thermal stability.
Bosch Rexroth RE 90220 — mineral hydraulic fluids
Bosch Rexroth's data sheet for mineral-oil-based hydraulic fluids, for its own pumps and motors: filterability, cleanliness and antiwear requirements beyond DIN 51524-2.
Hydraulic oil, type H HM — ISO 11158
The international standard for mineral hydraulic fluids; class HM is the antiwear oil, the ISO counterpart of DIN 51524-2 HLP.
ASTM D6158, type HM — antiwear hydraulic oil
The American standard for mineral HM hydraulic oils (with antiwear additives), equivalent to DIN 51524-2 HLP and ISO 11158 HM.
| Property | Typical value | Method |
|---|---|---|
| ISO viscosity grade | 22 | ISO 3448 |
| Fluid type (ISO classification) | HM | |
| Kinematic viscosity @0°CcSt | 180 | Astm D445 |
| Kinematic viscosity @40°CcSt | 22 | Astm D445 |
| Kinematic viscosity @100°CcSt | 4.3 | Astm D445 |
| Viscosity index | 100 | ISO 2909 |
| Density @15°Ckg/m3 | 866 | ISO 12185 |
| Flash point (COC)°C | 210 | ISO 2592 |
| Pour point°C | -30 | ISO 3016 |

Shell Tellus S2 M are high-performance hydraulic fluids that use Shell's unique patented technology to deliver outstanding protection and operating performance for most mobile and manufacturing equipment. They resist mechanical stress and help prevent the formation of harmful deposits that can reduce hydraulic system efficiency. The ISO VG 22 grade has a kinematic viscosity of 22 cSt at 40 °C and 4.3 cSt at 100 °C, with a viscosity index of 100.
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