Overview
The SKF 22238 K W33 C3 is a high-capacity double-row spherical roller bearing designed for demanding industrial environments. This bearing delivers superior load-carrying capability and maintains alignment tolerance across a wide range of mechanical applications including mining, heavy machinery, and power transmission systems. The SKF 22238 series is manufactured to ISO tolerance standards and engineered for extended service life under high radial and axial loads.
Key Features
- Double-row spherical roller design for enhanced load capacity and stability
- Accommodates shaft-to-housing misalignment to reduce installation stress
- Optimized roller geometry and durable material composition for extreme duty cycles
- Lubrication groove with lubrication holes on outer ring for easy maintenance
- Sheet steel cage for robust operation in industrial settings
- Sealed against contamination; standard open bearing design
Technical Specifications
- Bore Diameter: 190 mm (7.48 inches)
- Outer Diameter: 340 mm (13.39 inches)
- Width: 92 mm (3.62 inches)
- Weight: 35.5 kg (78.3 lbs)
- Basic Dynamic Load Rating (C): 1342 kN
- Basic Static Load Rating (C₀): 1700 kN
- Fatigue Load Limit: 150 kN
- Reference Speed: 1700 r/min
- Limiting Speed: 2400 r/min
- Operating Temperature Range: −30 °C to +200 °C
- Tolerance Class: PN (Normal)
- Clearance: Slightly increased radial clearance (C3)
- Country of Origin: Sweden
- EAN: 7316576601187
Typical Applications
The SKF 22238 K W33 C3 is ideal for use in:
- Large industrial gearboxes and reducers requiring high shock loads
- Mining equipment, crushers, and screening machinery
- Heavy machinery spindles and main spindle bearings
- Vibrating screen shafts and conveyors
- Pulp and paper mill equipment
- Steel mill and foundry machinery where thermal cycling is common
- Marine and offshore applications requiring corrosion resistance
Compatibility & Replacements
Compatible With
- Standard industrial shaft and housing designs (ISO 286 tolerances)
- Universal mounting on 190 mm bore shafts with standard 340 mm outer diameter housings
- Lubrication systems using mineral, synthetic, or grease-based bearings oils
- Industrial applications operating within −30 °C to +200 °C temperature range
Replaces / Drop-In Replacement For
- SKF 22238 CC/C3 W33
- SKF 22238 CC W33
- NSK 22238 CAM-E4
- NTN NU2238 EC ML/C3
- SNR 22238EM W33
- FAG/Schaeffler 22238 alternatives (verify specific variant compatibility)
Works With
- ISO 10 and ISO 11 grease lubrication systems
- Mineral and synthetic bearing oils (ISO VG 32–68)
- Standard industrial sealing arrangements (labyrinth or felt seals recommended)
- Industrial coupling and transmission systems
- Condition monitoring and vibration analysis equipment
