6904RS
6900 SeriesRSGDQV 6904RS deep groove ball bearing, 20×37×9mm, single rubber seal (contact type), good dust and moisture resistance. Rated dynamic load 6.38kN, rated static load 3.65kN. Typical applications: Automotive.
Technical Drawing
Technical Specifications
| Bore (d) | 20 mm |
| Outer Diameter (D) | 37 mm |
| Width (B) | 9 mm |
| Dynamic Load (C) | 6.38 kN |
| Static Load (C₀) | 3.65 kN |
| Limiting Speed (Grease) | 12,000 rpm |
| Limiting Speed (Oil) | 22,000 rpm |
| Internal Clearance | C0 |
| Material | GCr15 |
| Precision Grade | P0 |
Related specifications notes
Seal Design Notes
- Seal construction
- An RS sealing ring made of nitrile rubber (NBR) on one side; the opposite side is open.
- What it shields
- The ring helps limit contaminant entry and grease escape on the sealed side. The open side remains dependent on the assembly. No water-resistance rating is specified.
- Effect on speed
- Where provided, the RS grease-lubricated limiting speed is lower than the open version for the same base model. Compare the two model-specific ratings; if the RS rating is missing, request confirmation before selecting an operating speed.
- Lubrication
- The factory table lists both grease and oil lubrication. Use the oil-specific rating for an oil-lubricated arrangement; a missing grease rating does not remove the listed oil rating.
- When to choose it
- Consider RS when a one-sided NBR sealing arrangement suits the assembly and the applicable listed speed covers the intended operating conditions. Confirm the required contamination protection.
Key Features
- Standard dimensions: 20mm bore × 37mm OD × 9mm width
- Single rubber seal for contamination protection
- Dynamic load rating: 6.38kN | Static load rating: 3.65kN
- Grease speed limit: 12,000 r/min | Oil speed limit: 22,000 r/min
- Material: GCr15 | Internal clearance: C0 | Precision grade: P0
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