Within the market taxonomy, Railway Lubricants are classified into greases, oils, pastes, and solid lubricants, each further divided into sub‑types that align with the application demands described above. Greases dominate the segment, split into calcium sulfonate, lithium complex, and synthetic polyalphaolefin (PAO) bases; calcium sulfonate greases are favored for bearing applications due to their water‑resistance, while synthetic PAO greases serve high‑temperature gear environments. Oils are typically mineral or synthetic, with synthetic hydrotreated oils offering superior oxidative stability for wheel‑rail contact. Paste lubricants, composed of high‑shear thickeners and solid particles, are employed in brake systems where controlled friction is essential. Solid lubricants—graphite, molybdenum disulfide, and PTFE coatings—are applied in niche zones such as sliding surfaces under extreme pressure. The proportional distribution of these types mirrors the application share, with greases contributing roughly 55 % of market revenue, oils 30 %, pastes 10 %, and solids 5 %.