6904RZ
6900 SeriesRZGDQV 6904RZ deep groove ball bearing, 20×37×9mm, single rubber seal (light-contact type), good sealing with moderate friction. 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) | 19,000 rpm |
| Limiting Speed (Oil) | 22,000 rpm |
| Internal Clearance | C0 |
| Material | GCr15 |
| Precision Grade | P0 |
Related specifications notes
Seal Design Notes
- Seal construction
- An RZ 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 factory table does not specify contact geometry or a water-resistance rating.
- Effect on speed
- The listed grease-lubricated limiting speed is 100% of the open version for the same base model. This is a speed-rating comparison, not a claim of zero seal friction.
- Lubrication
- The factory table lists both grease and oil lubrication. Check the model-specific oil speed and lubricant supply through the open side.
- When to choose it
- Consider RZ when one NBR sealing ring and the listed open-version grease speed suit the application, with the opposite side protected by the assembly.
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: 19,000 r/min | Oil speed limit: 22,000 r/min
- Material: GCr15 | Internal clearance: C0 | Precision grade: P0
Need a quote for this bearing?
Get pricing, lead time, and shipping options — submit your inquiry today
Related Products
Other 6900 series bearings you may need
50×72×12mm
View Details
d × D × B50×72×12 mm
Dynamic Load (C)14.5 kN
Limiting Speed (Grease)5,300 r/min
69002RS
50×72×12mm
View Details
d × D × B50×72×12 mm
Dynamic Load (C)14.5 kN
Limiting Speed (Grease)9,000 r/min
6900ZZ
50×72×12mm
View Details
d × D × B50×72×12 mm
Dynamic Load (C)14.5 kN
Limiting Speed (Grease)5,300 r/min
6900RS
50×72×12mm
View Details
d × D × B50×72×12 mm
Dynamic Load (C)14.5 kN
Limiting Speed (Grease)9,000 r/min
6900RZ