23240B.MB.C4 bearings have the advantages of Self-aligning, extremely high load-bearing capacity, thinnest cross-section, low friction, suitable for confined spaces, and are therefore widely used in the Large crushers, mills, and rotary kilns.

| Part Number | 23240B.MB.C4 |
| Design Type | B = with fixed central rib |
| Bore Type | Z = Cylindrical bore |
| RIC | C4 |
| Row | 2 |
| Bearing Type | Double row spherical roller bearings |
| Manufacturer Part Code | 23240BMBC4 |
| Original Code | 23240-B-MB |
| Cage | MB = Solid brass cage, guided on inner ring |
| Measurement | Metric |
| d φ Inside [inch] | 7.874 |
| D Φ Outside [inch] | 14.173 |
| B Width [inch] | 5.039 |
| nB Reference speed (grease) [min–1] | 971 |
| nG Limiting speed (oil) [min–1] | 1497 |
| Weight [kg] | 60.5 |
| r(min.) Chamfer [inch] | 0.157 |
| D1 [inch] | 12.106 |
| ds [inch] | 0.374 |
| ns [inch] | 0.697 |
| Cr Radial Dynamic [lbf] | 373146 |
| C0r Radial static [lbf] | 618178 |
| Cur Radial Fatigue [lbf] | 36626 |
| Temperature - T(min)[°C] | -30 |
| Temperature - T(max)[°C] | up +200 |
| Mounting dimensions | |
| da(min.) [inch] | 8.543 |
| Da(max.) [inch] | 13.504 |
| ra(max.) [mm] | 60.5 |
| Calculation coefficient | |
| e | 0.37 |
| Y0 | 1.79 |
| Y1 | 1.83 |
| Y2 | 2.72 |
The 23240B.MB.C4 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.















