Overview
The SKF 22228 CCK/C3W33 is a double-row spherical roller bearing engineered for demanding industrial applications requiring high load capacity and misalignment accommodation. This tapered bore spherical roller bearing features an open design with steel cage and C3 internal clearance. The bearing includes a guide ring centred on a flangeless inner ring, two stamped steel cages, and an annular groove in the outer ring with three lubrication holes.
Key Features
- Two rows of spherical rollers enhance load-carrying capacity and stability while accommodating misalignment between the shaft and housing
- Self-aligning design accommodates misalignment, provides high load carrying capacity for both radial and heavy axial loads in both directions
- Manufactured to tight dimensional and geometrical tolerances with symmetrical rollers that self-adjust for optimal load distribution
- Low friction design with self-guiding rollers and floating guide ring that positions unloaded rollers optimally as they enter the load zone
- Steel cage construction provides robust support for harsh operating environments
- Maximum speed rating of 3200 rpm with operating temperature to +390 °F (200 °C)
Technical Specifications
- Bore Diameter: 140 mm
- Outside Diameter: 250 mm
- Width: 68 mm
- Bore Type: Tapered 1:12
- Dynamic Load Capacity: 743 kN
- Static Load Capacity: 900 kN
- Number of Rows: Double Row
- Cage Type: Sheet metal
- Closure: Open
- Internal Clearance: C3
- Maximum RPM: 3200 rpm
- Operating Temperature: -20 to +390 °F (-29 to +200 °C)
- Fillet Radius: 2.50 mm
- Series: 222
- Material: Bearing steel
Typical Applications
This bearing is suitable for applications including wind turbine main shafts, continuous casters, vibratory applications and high-speed applications. It is ideal for demanding applications in industries such as mining and heavy machinery where high radial and axial loads combined with shaft deflection or misalignment are common. The robust design makes it well-suited for mechanical power transmission, crusher gearboxes, rolling mill stands, and other industrial machinery where load capacity and durability are critical.
Compatibility & Replacements
Compatible With
- Industrial gearboxes and reducer units requiring 140 mm bore shafts
- Machinery with tapered shaft mounting systems (1:12 taper ratio)
- Systems requiring C3 internal clearance for operating temperature ranges
- Equipment compatible with 250 mm housing bore specifications
Replaces / Drop-In Replacement For
- 22228 CC/C3W33 (straight bore variant with similar load ratings)
- 22228 CCK/C4W33 (higher clearance variant)
- 22228 CCK/W33 (open bearing without C3 clearance designation)
Works With
- Standard industrial bearing installation tools and procedures
- Oil and grease lubrication systems with 3-point access (annular groove and lubrication holes)
- Shaft mounting systems with tapered bore adapters
- Heavy-load mechanical transmission systems in metal processing and mining equipment
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{“label”: “Manufacturer”, “value”: “SKF”},
{“label”: “Part Number”, “value”: “22228 CCK/C3W33”},
{“label”: “Series”, “value”: “200 Series (222)”},
{“label”: “Bearing Type”, “value”: “Double Row Spherical Roller”},
{“label”: “Bore Diameter”, “value”: “140 mm (5.51 in)”},
{“label”: “Outside Diameter”, “value”: “250 mm (9.84 in)”},
{“label”: “Width”, “value”: “68 mm (2.68 in)”},
{“label”: “Bore Style”, “value”: “Tapered 1:12”},
{“label”: “Dynamic Load Rating”, “value”: “743 kN (167,033 lbf)”},
{“label”: “Static Load Rating”, “value”: “900 kN (202,328 lbf)”},
{“label”: “Maximum RPM”, “value”: “3200 rpm”},
{“label”: “Internal Clearance”, “value”: “C3 (Greater than normal)”},
{“label”: “Cage Material”, “value”: “Sheet Steel”},
{“label”: “Closure Type”, “value”: “Open”},
{“label”: “Operating Temperature Range”, “value”: “-20 to +390 °F (-29 to +200 °C)”},
{“label”: “Condition”, “value”: “New in Box”}
]
