Must pass the FZG gear test (typically a failure load stage of 12 or higher) to prove protection against scuffing and wear.
Lubricants meeting this standard must satisfy rigorous criteria to ensure equipment longevity:
Low foaming tendencies to maintain a consistent lubricating film. 51517 rar
The identifier refers to DIN 51517 , a critical German industrial standard for lubricating oils, specifically CLP type gear oils . Overview of DIN 51517
High demulsibility, allowing water to easily separate from the oil to prevent rust. Must pass the FZG gear test (typically a
Must not react negatively with common seal materials or yellow metals (like bronze or copper used in some gears). Application in Manuals
You will often see this standard cited in industrial machinery manuals—for example, in manuals for gearboxes—recommending oils like Agip Blasia SX 320 that specifically meet DIN 51517 T.3/CLP requirements. ORSO - MASCHIO GASPARDO S.p.A. Overview of DIN 51517 High demulsibility, allowing water
Lubricants with added corrosion and oxidation inhibitors, suitable for moderate loads.