6238-2RS1
The most widely used bearing series. Versatile, good balance of load capacity and speed. The go-to choice for general-purpose applications.
NSK6208DDU40 × 80 × 18mm
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Specifications
| Bore diameter (d) | 40 mm |
| Outer diameter (D) | 80 mm |
| Width (B) | 18 mm |
| Dynamic load rating (C) | 32.5 kN |
| Static load rating (C₀) | 19 kN |
| Weight | 352 g |
| Max speed (grease) | 11,000 rpm |
| Max speed (oil) | — |
Equivalents Across Brands
Seal Type
Rubber Sealed (2RS)
Rubber contact seals on both sides. Superior protection from contaminants. Pre-lubricated, maintenance-free.
Best forDirty, dusty, or wet environments. Applications requiring long maintenance-free operation.
Avoid forVery high-speed applications (seal friction limits top speed). Environments exceeding 110°C.
Examples
- Agricultural machinery
- Conveyor rollers
- Automotive components
- Outdoor equipment
- Washing machines
Internal Clearance
Normal Clearance (CN)
Standard radial internal clearance. Suitable for most applications under normal operating conditions.
Best forGeneral-purpose use. Normal temperatures, standard fits, moderate speeds.
TemperatureUp to ~70°C operating temperature
Where This Bearing Is Used
Light Series — Common Applications
- Electric motors
- Pumps and compressors
- Conveyor rollers
- Agricultural machinery
- Automotive components (alternators, water pumps, A/C)
- Washing machines and dryers
- Fans and blowers
- Gearboxes
- Power transmission equipment
- Skateboard and inline skate wheels
ManufacturingAutomotiveAgricultureHVACConsumer goods
Medium (40mm bore) — Typical Uses
- Industrial electric motors (10-50 HP)
- Gearboxes and speed reducers
- Heavy-duty pumps
- Conveyor systems
- Machine tool spindles
- Automotive wheel hubs
- Centrifugal fans
- Compressors