Overview
The SKF 22238 CCK/C3W33 is a high-capacity double-row spherical roller bearing engineered for demanding industrial applications. This bearing features a tapered 1:12 bore, 190mm bore diameter, 340mm outside diameter, and 92mm width. The SKF 22238 CCK/C3W33 delivers reliable performance under heavy radial and axial loads while accommodating shaft misalignment—a critical advantage in real-world industrial environments.
Key Features
- Double-row design: Two rows of spherical rollers enhance load-carrying capacity and stability, enabling reliable operation under extreme stress.
- Self-aligning capability: Spherical roller geometry accommodates shaft-to-housing misalignment without premature wear, reducing maintenance downtime.
- Tapered bore (1:12): Precision tapered bore enables direct mounting on tapered shafts, simplifying assembly and ensuring secure positioning.
- Low-friction design: Self-guiding roller technology minimizes friction and heat generation, extending bearing life in continuous-duty applications.
- Robust construction: Sheet-steel cage, bearing-steel construction, and optimized roller geometry withstand shock loads and misalignment common in mining, construction, and heavy machinery.
- C3 internal clearance: Greater-than-normal radial clearance accommodates thermal expansion and thermal gradients typical in industrial environments.
Technical Specifications
- Bore diameter: 190 mm (7.48 in)
- Outside diameter: 340 mm (13.39 in)
- Width: 92 mm (3.62 in)
- Bore type: Tapered 1:12
- Dynamic load rating (C): 1342 kN
- Static load rating (C0): 1700 kN
- Maximum RPM: 2400 rpm
- Operating temperature range: −20 °F to +390 °F (−29 °C to +199 °C)
- Cage material: Sheet steel
- Bearing material: Bearing steel
- Closure type: Open
- Internal clearance: C3
- Lubrication type: Hole and groove with three lubrication holes in outer ring
- Weight: 36.533 kg (80.47 lb)
Typical Applications
The SKF 22238 CCK/C3W33 is engineered for industrial machinery requiring high load capacity and misalignment tolerance, including:
- Continuous casters in steel mills and foundries
- Large fan and blower bearing housings
- Crushing equipment and vibrating machinery in mining
- Gearbox main shafts and heavy-duty transmissions
- Cement kiln and cement mill drive systems
- Mud motor bearings in drilling and construction
Compatibility & Replacements
Compatible With
- Heavy-duty industrial gearboxes and gear units
- Continuous-duty electric motors (≤2400 rpm)
- Tapered shaft designs requiring 1:12 bore taper
- Machinery requiring C3 internal clearance for thermal accommodation
Replaces / Drop-In Replacement For
- SKF 22238 CC/C3W33 (cylindrical bore variant)
- SKF 22238 CCK/W33 (standard clearance variant)
- Equivalent 22238-series spherical roller bearings from Timken, NSK, NTN, FAG, and Rollway (verify cage material and internal clearance before substitution)
Works With
- Standard SKF grease and oil lubrication products
- Industrial bearing housings designed for 190mm bore and 340mm outside diameter
- Tapered shaft collars and mounting components for 1:12 taper
- Lubrication systems with hole-and-groove lubrication capability
