Characteristics of high temperature variants for deep groove ball bearings
| Characteristics | Variants (fig. 1) | ||
| VA201 | VA208 | VA228 | |
| Lubrication type
|
Polyalkylene glycol/graphite mixture | Segmented cage made of graphite | Coronet cage made of graphite |
| Phosphated rings, rolling elements and cages
|
✔ | ✔ | ✔ |
| NSF H1 food grade | ✘ | ✔ | ✔ |
| Shields (suffix 2Z) | ✔ / ✘ (open bearing) | ✔ | ✔ |
| Relubrication-free | ✔ / ✘ (open bearing) | ✔ | ✔ |
| Maximimum operating temperature | 250 °C (480 °F) | 350 °C (660 °F) | 350 °C (660 °F) |
| Limiting speed [r/min]1) | 4 500 / dm | 4 500 / dm | 9 000 / dm |
- 1) dm= bearing mean diameter = 0,5 (d + D). For outer ring rotation, use dm = D.
