238/1120-K-MB bearings ( 1120 mm x 1360 mm x 180 mm) have the advantages of Self-aligning, high load-bearing capacity, and impact resistant, and are therefore widely used in the Mining machinery, metallurgical equipment, papermaking machinery, vibrating screens, wind turbines, and large industrial gearboxes.

| Part Number | 238/1120-K-MB |
| Design drawing | 2 |
| Bore Type | K = Tapered bore (K = taper 1:12) |
| RIC | CN |
| Row | 2 |
| Bearing Type | Spherical roller bearings With central rib Tapered bore(K = taper 1:12) |
| Manufacturer Part Code | 238/1120KMB |
| Cage | MB = Solid brass cage, guided on inner ring |
| Measurement | Metric |
| d φ Inside [inch] | 44.094 |
| D Φ Outside [inch] | 53.543 |
| B Width [inch] | 7.087 |
| nG Limiting speed (oil) [min–1] | 297 |
| Weight [kg] | 515 |
| r(min.) Chamfer [inch] | 0.236 |
| D1 [inch] | 50.901 |
| ds [inch] | 0.374 |
| ns [inch] | 0.697 |
| Cr Radial Dynamic [lbf] | 1315068 |
| C0r Radial static [lbf] | 4113826 |
| Temperature - T(min)[°C] | -30 |
| Temperature - T(max)[°C] | +200 |
| Mounting dimensions | |
| da(min.) [inch] | 45.000 |
| Da(max.) [inch] | 52.638 |
| ra(max.) [mm] | 515 |
| Calculation coefficient | |
| e | 0.12 |
| Y0 | 5.7 |
| Y1 | 5.83 |
| Y2 | 8.67 |
The 238/1120-K-MB Double-row spherical roller bearings mainly consist of an inner ring, an outer ring, two rows of spherical rollers, a cage, and seals. The outer ring raceway has a spherical structure, while the inner ring has a double-row raceway. The rollers and raceways are logarithmically curved. The cage is typically made of stamped steel or machined brass.
Double-row spherical roller bearings possess excellent self-aligning properties, compensating for shaft deflection, installation errors, and misalignment. They can simultaneously withstand radial loads and bidirectional axial loads, exhibiting extremely high load-bearing capacity and strong impact resistance. Furthermore, the internal clearance can be optimized for vibration conditions, effectively reducing frictional temperature rise.















