637Z
6300 SeriesZGDQV 637Z deep groove ball bearing, 7×26×9mm, single metal shield (non-contact type), low friction, suitable for high-speed applications. Rated dynamic load 3.68kN, rated static load 1.66kN. Typical applications: Agricultural Machinery, Water Pumps, Automotive, Oil & Gas.
Technical Drawing
Technical Specifications
| Bore (d) | 7 mm |
| Outer Diameter (D) | 26 mm |
| Width (B) | 9 mm |
| Dynamic Load (C) | 3.68 kN |
| Static Load (C₀) | 1.66 kN |
| Limiting Speed (Grease) | 28,000 rpm |
| Limiting Speed (Oil) | 34,000 rpm |
| Internal Clearance | C0 |
| Material | GCr15 |
| Precision Grade | P0 |
Related specifications notes
Seal Design Notes
- Seal construction
- A metal shield on one side; the opposite side is open. No rubber sealing-ring material is specified.
- What it shields
- The shield helps limit dust entry and grease escape on the shielded side. The open side needs protection from the assembly; no water-resistance rating is provided.
- Effect on speed
- The listed grease-lubricated limiting speed is 100% of the open version for the same base model. Equal listed limits do not establish identical friction or running temperature.
- Lubrication
- The factory table lists both grease and oil lubrication. Check the model-specific oil speed and arrange lubricant access through the open side.
- When to choose it
- Consider Z when one side needs a shield and the open side faces a protected, lubricated space in the assembly.
Key Features
- Standard dimensions: 7mm bore × 26mm OD × 9mm width
- Single metal shield for contamination protection
- Dynamic load rating: 3.68kN | Static load rating: 1.66kN
- Grease speed limit: 28,000 r/min | Oil speed limit: 34,000 r/min
- Material: GCr15 | Internal clearance: C0 | Precision grade: P0
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