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| Inside Diameter (mm): | 55 |
| a (mm): | 310 |
| e (mm): | 236 |
| w (mm): | 154 |
| h (mm): | 80 |
| Number of Mounting Holes: | 2 |
| Housing No.: | P 311 |
| Bearing No.: | UC 311 |
| Ring Material: | Chrome Steel |
| Rolling Element Material: | Chrome Steel |
| Cage Material: | Steel,Nylon,Brass |
| Housing Material: | Cast Iron |
| Product weight: | 7.800 Kg |