SKF TSN520U bearing housing accessory. Housing-mounted accessory — taconite seal (TSN), labyrinth seal (LOR), V-ring seal (LER), oil ring, oil sight-glass, drain plug, breather, lock nut cover, adapter-sleeve cap. Sized to fit an SNL / SAF / SAW pillow-block housing of matching numeric designation.
| Type | Bearing housing accessory |
| Designation | SKF TSN520U |
| HS code | 8483.90 |
| Outside diameter | 165.5 mm |
| Shaft diameter | 90 mm |
| Width | 28 mm |
| Accessory type | Housing seal |
| Sealing type | Oil |
| Material | Steel with silicone and nitrile rubber elements |
| Product net weight | 1.37 kg |
| eClass code | 23-05-17-90 |
| UNSPSC code | 31171519 |
| Material | As declared by SKF designation suffix |
| Temperature range | Per SKF product data |
| Primary standard | SKF designation convention (see description for governing ISO / DIN) |
| MOQ | 1 |
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.