ISO 12925-2:2020

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Lubricants, industrial oils and related products (class L) — Family C (gears) — Part 2: Specifications of categories CKH, CKJ and CKM (lubricants open and semi-enclosed gear systems)

ISO 12925-2:2020 is an international standard that specifies requirements for industrial lubricants categorized as "Family C" (gear oils), particularly focusing on lubricants designed for open and semi-enclosed gear systems, including classifications for categories CKH, CKJ, and CKM; essentially defining the properties and performance standards for these types of gear oils used in industrial applications.