23244 CKY C4 W20 bearings ( 220 mm x 400 mm x 144 mm) 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 | 23244 CKY C4 W20 |
| Bearing Type | Spherical roller bearings, double row |
| Reference From | SKF 23244 CKY C4 W20 |
| Cage | Y = Pressed brass cage, ring guided |
| Seal | Open |
| Internal clearance | C4 |
| Weight [lb] | 179.675 |
| Permissible angular misalignment | 3.5 degrees |
| Heat stabilization | 392 °F (200 °C) |
| Roller bearing type | Spherical |
| Lubrication | W20 = Three lubrication holes in the outer ring |
| Bore Type | K = Tapered bore, taper 1:12 |
| Principal Dimensions | |
| Inside - d φ [inch] | 8.661 |
| Inside - d φ tolerance | +0.04 mm to 0 |
| Outside - D Φ [inch] | 15.748 |
| Outside - D Φ tolerance | -0.04 mm to 0 |
| Width - B [inch] | 5.669 |
| Width - B tolerance | -0.08 mm to 0 |
| d2 [inch] | 10.197 |
| D1 [inch] | 13.307 |
| b [inch] | 0.657 |
| K [inch] | 0.354 |
| r1,r2(min.) [inch] | 0.157 |
| Performance | |
| Dynamic Radial - Cr [lbf] | 55673 |
| Static Radial - C0r [lbf] | 775535 |
| Speed ratings (oil) - nG [rpm] | 2169 |
The 23244 CKY C4 W20 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.















