SKF 18520/Q tapered roller bearing. Single-row tapered roller bearing designed to take combined heavy radial and one-direction axial load. Rollers, inner ring raceway (cone) and outer ring raceway (cup) are ground to converge at a common apex on the bearing axis. Two bearings are always mounted in opposition so the pair carries axial load in both directions and can be preloaded to remove all internal clearance. Metric dimensions per ISO 355 / ISO 492 Class Normal.
| Type | Tapered roller bearing |
| Designation | SKF 18520/Q |
| Standard | ISO 15 / DIN 623 dimension plan; ISO 492 Class Normal precision |
| Bore d | 100 mm |
| HS code | 8482.20 |
| Outside diameter | 73.025 mm |
| Width, total | 12.7 mm |
| Width, outer ring | 12.7 mm |
| Contact angle | 13.1 ° |
| Bearing part | Outer ring (cup) |
| Arrangement of contact angle (double-row bearing) | Not applicable |
| Matched arrangement | No |
| Coating | Without |
| Sealing | Without |
| Relubrication feature | Without |
| Unit system | Inch |
| Indicative carbon footprint for new product | 0.32 kg CO2e |
| Product net weight | 0.0853 kg |
| eClass code | 23-05-09-10 |
| UNSPSC code | 31171516 |
| Material | Bearing steel — 100Cr6 (through-hardened) or SNR-nitrided; cage as declared by suffix |
| Temperature range | -30 to +120 °C standard grease |
| Primary standard | ISO 15 / ISO 492 / DIN 623 |
| MOQ | 1 |
ISO 15 boundary-plan interchange — the numeric bore-code block is portable across every ISO 15 bearing manufacturer (SKF, Timken, NSK, NTN, FAG, Koyo, NACHI). Confirm suffix compatibility on cage, seal, clearance and precision class before substitution.