Both the 24080CA/W33 and 22372CAK/W33 are high-performance spherical roller bearings for rolling mills, but they are designed for different mill positions and load conditions. This article compares their specifications and ideal applications.
Comparison at a Glance
| Feature | 24080CA/W33 | 22372CAK/W33 |
|---|---|---|
| Model | 24080CA/W33 | 22372CAK/W33 |
| Bore Diameter (d) | 400 mm | 360 mm |
| Outer Diameter (D) | 600 mm | 760 mm |
| Width (B) | 200 mm | 240 mm |
| Cage Type | CA (Brass) | CA (Brass) |
| Lubrication | W33 | W33 |
| Bore Type | Cylindrical | K (Tapered, 1:12) |
| Typical Load Rating | Very High | Extremely High |
Ideal Mill Applications
Best for:
- Hot strip mill support rolls – The CA brass cage withstands heavy shock loads during reversing operations
- Plate mill backup rolls – High radial capacity for large rolling forces
- Large gearboxes – Reliable performance under moderate speeds and heavy loads
Best for:
- Wire rod mill finishing stands – The tapered bore (K) simplifies mounting on adapter sleeves
- Bar mill heavy stands – Extremely high load capacity for demanding sections
- Reversing roughing mills – Robust design for continuous shock loads
Selection Guide
Choose the 24080CA/W33 for large-diameter support rolls in hot strip or plate mills where a cylindrical bore fits the shaft design. Choose the 22372CAK/W33 for applications where easy mounting and dismounting with an adapter sleeve is critical, such as in finishing stands or mills with frequent roll changes.
Why These Bearings Work in Rolling Mills
Both models incorporate design features that address the top three challenges in steel mill bearings:
- Shock loads – CA brass cages provide strength and damping.
- Contamination and heat – W33 groove ensures fresh grease reaches the rolling elements.
- Mounting convenience – The K version offers a practical solution for large, heavy bearings.
For a complete list of spherical roller bearing models we supply for rolling mills, view our full catalog or send an inquiry for specific load ratings and pricing.
For other rolling mill bearing types including four-row cylindrical, four-row tapered and backing bearings, view our complete rolling mill bearing collection.