24068 CC/C4W33VA991 Bore 340 Mm, Stamped Steel Cages, Spherical Roller Bearings, For High-speed Applications
The 24068 CC/C4W33VA991 Double-row spherical roller bearings are suitable for heavy-load, impact, and eccentric conditions. Classic applications include vibrating screen exciters, crushers, fans, paper machine press rolls, mining conveyor equipment, and marine propulsion shafts.
The 24068 CC/C4W33VA991 bearing is a Spherical roller bearings, double row with an inner diameter of 340 mm , an outer diameter of 520 mm, a width of 180 mm. GCr15SiMn rings, GCr15SiMn rolling mlement. It uses C4 standard radial clearance, Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
24068 CC/C4W33VA991 bearings ( 340 mm x 520 mm x 180 mm) have the advantages of High load-bearing capacity, impact resistant, self-aligning, and easy to install, and are therefore widely used in the Wind turbine main shaft, large ship main shaft, giant construction machinery.
| Part Number | 24068 CC/C4W33VA991 |
| Bearing Type | Spherical roller bearings, double row |
| Internal design | CC = Flangeless inner ring, guide ring centred on the inner ring, two stamped steel cages |
| Reference From | SKF 24068 CC/C4W33VA991 |
| Cage | CC = stamped steel cages |
| Seal | Open |
| Internal clearance | C4 |
| Weight [lb] | 297.621 |
| Permissible angular misalignment | 2 degrees |
| Heat stabilization | 392 °F (200 °C) |
| Roller bearing type | Spherical |
| Lubrication | W33 = Annular groove and three lubrication holes in the outer ring |
| Bore Type | Z = cylindrical bore |
| Other variants | VA991 = Bearing for high-speed applications |
| Principal Dimensions | |
| Inside - d φ [inch] | 13.386 |
| Inside - d φ tolerance | -0.04 mm to 0 |
| Outside - D Φ [inch] | 20.472 |
| Outside - D Φ tolerance | -0.05 mm to 0 |
| Width - B [inch] | 7.087 |
| Width - B tolerance | -0.4 mm to 0 |
| d2 [inch] | 14.842 |
| D1 [inch] | 17.835 |
| b [inch] | 0.878 |
| K [inch] | 0.472 |
| r1,r2(min.) [inch] | 0.197 |
| Performance | |
| Dynamic Radial - Cr [lbf] | 813993 |
| Static Radial - C0r [lbf] | 1393766 |
| Speed ratings (oil) - nG [rpm] | 1572 |
The 24068 CC/C4W33VA991 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.
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