| Standard/ applicable to | Title | Keyword/ Meas. unit | Conditions | Description |
DIN 51 502 Oils, greases | Lubricants and related substances; designation of lubricants and marking of lubricant containers, equipment and lubricating points. | DIN designation of lubricants | Consistent and unambiguous marking of industrial lubricants based on corresponding test standards to avoid damage caused by mistaken use of inappropriate lubricants. | |
DIN 51 506 Compressor and condenser oils | VB and VC lubricating oils with and without additives and VDL lubricating oils | Condenser oil requirements | Requirements for lubricating oils that are used in air condensers with oil-lubricated compression chambers with no injection cooling. | |
DIN 51 509 Gear oils | Selection of lubricants for gears Part 1: Lubricating oils ("C") Part 2: Plastic lubricants ("G" and "OG") | Requirements for gear oils and greases | Standard values, criteria and advice for the selection of lubricants for rolling gear (e.g. spur wheel or bevel gear with no axial offset) and screw rolling gear (e.g. worm gear). | |
DIN 51 517 Machine and gear oils | Lubricants; Lubricating oils Part 1: Minimum requirements lubricating oils "C" Part 2: Minimum requirements lubricating oils "CL" Part 3: Minimum requirements lubricating oils "CLP" | Machine and gear oil requirements | Requirements for lubricating oils used for circulation and immersion lubrication | |
DIN 51 519 Oils | Lubricants; ISO viscosity classification for industrial liquid lubricants | ISO VG/ ISO VGs | Viscosity measured at | Classification system for industrial liquid lubricants based on viscosity of the lubricant. The tolerance zone is determined to +/-10% nominal viscosity. |
DIN 51 524 Hydraulic oils | Pressure fluids; Hydraulic oils Part 1: Minimum requirements lubricating oils "HL" Part 2: Minimum requirements lubricating oils "HLP" Part 3: Minimum requirements lubricating oils "HVLP" | Hydraulic oil requirements | Requirements for hydraulic oils | |
| DIN 51 825 | lubricants; Lubricating greases K, Classification and requirements | Roller and plain bearing grease requirements | Requirements for greases used to lubricate roller bearings, plain bearings and sliding surfaces. | |
| DIN 51 836 | lubricants; Lubricating greases G, Classification and requirements | Gear transmission grease requirements | Requirements for greases used to lubricate enclosed gears. | |
DIN ISO 2909 Oils | Petroleum products; Calculation of viscosity index from kinematic viscosity | Viscosity index/ without | Viscosity measured at | The viscosity index (VI) describes the change in kinematic viscosity of an oil with temperature. Two different methods are used in relation to the calculation of viscosity index (A: VI < 100, B: VI > 100). |
| DIN ISO 6743-0 | Lubricants, industrial oils and related products (class L); Classification; General | ISO marking of lubricants | Adoption of the international standard ISO 6743 as a German DIN standard. Alternative marking system for industrial lubricants for the avoidance of damage by mistaken use of incorrect lubricant. | |
Roller bearing greases | DN value | /mm min | Characteristic value that describes the maximum operating speed for rolling bearing greases |
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