23172 CCK/C3W33 bearing
360 × 600 mm · dynamic rating 4515 kN · static rating 6950 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
23172 CCK/C3W33 specification
| Designation | 23172 CCK/C3W33 |
| Type | Spherical roller bearing |
| Series | 231 heavy duty |
| Bore diameter d | 360 mm |
| Outside diameter D | 600 mm |
| Basic dynamic load rating C | 4515 kN (4,515,000 N) |
| Basic static load rating C0 | 6950 kN (6,950,000 N) |
| Ratio C0/C | 1.54 |
| Speed guide, grease lubrication | 1,000 rpm |
| Life exponent p | 10/3 (roller bearing) |
Values come from the Rotec AI bearing catalogue and are indicative. Confirm against the manufacturer's current catalogue before ordering. Width: 192 mm. Ratings are from a distributor listing of the 23172 CACK variant of the same size (C 4,515 kN, C0 6,950 kN, limiting speed 1,000 rpm). The CC/W33 is in the same range. Confirm against the maker's catalogue.
What the designation 23172 CCK/C3W33 means
| Code | Meaning |
|---|---|
| 231 | Spherical roller bearing, double row self-aligning, heavy-duty, wider and higher capacity |
| 72 | bore code "72" = 72 × 5 = 360 mm |
| K | Tapered bore, taper 1:12, mounted on an adapter or withdrawal sleeve |
| CCK | Internal design and cage code of the maker (pressed or machined steel cage, symmetrical rollers, guide ring). The code differs between makers, so check the maker's catalogue. |
| C3 | Radial internal clearance larger than normal. Used where the inner ring runs warmer than the outer or with an interference fit. |
| W33 | Lubrication groove and three holes in the outer ring, so oil or grease reaches the rollers from the housing. |
Basic rating life of the 23172 CCK/C3W33
Basic rating life is L10 = (C / P)p million revolutions, where P is the equivalent dynamic load and p = 10/3 (roller bearing). For a 23172 CCK/C3W33 with C = 4515 kN, the table shows what that gives at different load levels. It is the ISO 281 basic life only: it does not include lubrication, contamination, misalignment or reliability modifiers.
| C / P | P as share of C | L10 (million rev) | L10 at 1,500 rpm | L10 at 3,000 rpm |
|---|---|---|---|---|
| 3 | 33.3% | 39 | 430 | 220 |
| 5 | 20.0% | 214 | 2,400 | 1,200 |
| 8 | 12.5% | 1,024 | 11,400 | 5,700 |
| 12 | 8.3% | 3,956 | 44,000 | 22,000 |
For example, a C / P of 5 means the equivalent load is 903 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 23172 CCK/C3W33
Brand-by-brand equivalents for this exact designation are not shown here. The Cross-Reference tool accepts SKF, FAG, NSK, NTN, Timken, Koyo and NRB designations, and shows what is catalogued.
Where the 23172 CCK/C3W33 is used
Spherical roller bearings are chosen for: Very high radial load with misalignment capability. Typical equipment: Crushers, mills, conveyors, wind main shafts, paper machines. Robust for shock/dust; lubrication and sealing are crucial.
Common problems on bearings like the 23172 CCK/C3W33
Most field failures trace back to lubrication, contamination, fits and alignment rather than the bearing itself. These guides explain how to recognise and prevent them:
Questions about the 23172 CCK/C3W33
What are the dimensions of a 23172 CCK/C3W33 bearing?
The 23172 CCK/C3W33 has a bore of 360 mm and an outside diameter of 600 mm. It is a spherical roller bearing. Series: 231 heavy duty.
What is the load rating of a 23172 CCK/C3W33 bearing?
In the Rotec AI catalogue the 23172 CCK/C3W33 has a basic dynamic load rating C of 4515 kN and a basic static load rating C0 of 6950 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 23172 CCK/C3W33 bearing?
Use the Cross-Reference tool in Rotec AI to check brand equivalents for the 23172 CCK/C3W33.