High-efficiency impact crushers are mainly used in secondary and tertiary fine crushing processes, featuring high crushing performance, efficiency, and energy savings.
JRZC designs CA-type spherical roller bearings specifically to support these crushers.
JRZC uses high-purity vacuum-degassed bearing steel as raw material to ensure bearing quality from the very beginning. The use of Michelin salt bath heat treatment for the rings and rollers contributes to stable quality and performance.
The hardness difference between the bearing rings and rollers is less than 1 HRC — a requirement that is 30% stricter than the GB/T 34891-2017 standard.
| Bore diameter | 460 mm |
| Outside diameter | 680 mm |
| Width | 163 mm |
| Basic dynamic load rating | 4065 kN |
| Basic static load rating | 6950 kN |
| Grease Reference speed | 280 r/min |
| Oil Limiting speed | 475 r/min |
| Bore type | Cylindrical |
| For Load Direction | Radial |
| Number of rows | Single row |
| Radial internal clearance | C3 |
| Tolerance class for dimensions | Nomal |
| Tolerance class for run-out | P6 |
| Seal type | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Product net weight | 205 kg |
| Roller material | Chrome steel |
| Ring Material | Chrome steel |
| Cage | Machined brass |