1. 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) Part 2, (2nd October 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (24 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗