Product photo — see the table below for main specifications; non-standard designs welcome
Four Row Tapered Roller Bearings
Four row tapered roller bearings combine very high capacity with shock resistance for rolling-mill roll necks and mine hoisting equipment. Clearance is set by spacers to keep the mill running accurately.
| Category | Tapered Roller Bearings |
| Precision class | P0 / P6 / P5 (P4 for precision types) |
| Clearance group | C0 / C2 / C3 / C4 (by application) |
| Material | GCr15 high-carbon chromium steel / carburising steel (optional) |
| Heat treatment | Quenched & tempered, 58–64 HRC, dimensional stabilised |
| Standards | GB/T 307 / ISO 492 / JB-T (per product) |
Series note: Tapered roller bearings carry combined radial and axial loads, with the load transmitted along the roller contact angle for high efficiency. Single row types are matched in pairs for preset …
