Product photo — see the table below for main specifications; non-standard designs welcome
Backing Bearings
Backing bearings for multi-roll cold rolling mills feature high OD dimensional accuracy, uniform wall thickness and extremely high rigidity. Mounted on the support-roll mandrels of cluster mills, they directly determine strip thickness precision — the core component of Sendzimir and 20-high mills.
| Category | Backing 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: The core component of multi-roll cold mill support-roll systems: high OD accuracy, uniform wall thickness and extreme rigidity that directly determine strip thickness precision. Classes P4/P…