JRZC uses high-purity vacuum-degassed bearing steel as raw material to ensure the quality of CC-type spherical roller bearings from the very beginning. The rings and rollers are treated with Aichelin salt bath heat treatment to guarantee consistent hardness and stable performance. The hardness difference between the bearing rings and rollers is less than 1 HRC, which is 30% stricter than the standard requirement of GB/T 34891-2017.
Extra-large C5 clearance for extreme heat
Excellent vibration absorption
W33 lubrication ensures long service life
Strong alignment capability
Built for severe-duty equipment
| Bore diameter | 140 mm |
| Outside diameter | 250 mm |
| Width | 68 mm |
| Basic dynamic load rating | 758 kN |
| Basic static load rating | 930 kN |
| Grease Reference speed | 1200 r/min |
| Oil Limiting speed | 1600 r/min |
| Bore type | |
| For Load Direction | Radial |
| Number of rows | Double row |
| Radial internal clearance | C5 |
| Tolerance class for dimensions | Nomal |
| Tolerance class for run-out | P6 |
| Seal type | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Product net weight | 13.9 kg |
| Roller material | Chrome steel |
| Ring Material | Chrome steel |
| Cage | Stamped steel |
JRZC 22228 CC/C5W33 features extra-large C5 clearance for extremely demanding thermal and vibration conditions in heavy industrial environments.
Q: When do I need C5 clearance?
A: When operating equipment generates very high temperature and heavy dynamic loads.