Product Overview: 6203 DDU Deep Groove Ball Bearing
Key Features at a Glance:
- Superior Double Sealing: The dual-lip contact seals on both sides provide outstanding protection against dust, dirt, and moisture ingress, ensuring excellent grease retention for extended service life.
- High Load Capacity: The light series design offers substantial radial and axial load-carrying capability for its size.
- Maintenance-Free Operation: Pre-lubricated and sealed for life, reducing total cost of ownership by eliminating relubrication needs.
- Precision Option: Available in standard tolerances and capable of being supplied to higher P5 precision grades for demanding applications.
Technical Specifications
| Parameter |
Specification |
| Bearing Type |
Single Row Deep Groove Ball Bearing |
| ISO Dimension Series |
62 Series – Light |
| Basic Designation |
6203 |
| Suffix |
DDU (Both sides with double lip contact seals) |
| Bore Diameter (d) |
17 mm |
| Outer Diameter (D) |
40 mm |
| Width (B) |
12 mm |
| Dynamic Load Rating (Cʳ) |
9.58 kN |
| Static Load Rating (Cₒʳ) |
4.78 kN |
| Limiting Speed (Grease) |
16,000 r/min |
| Limiting Speed (Oil) |
22,000 r/min |
| Weight (approx.) |
78.5 g |
Detailed Product Information
Design & Protection
The 6203 DDU features the deep groove raceway for high radial and moderate axial loads. Its defining characteristic is the inclusion of synthetic rubber double lip contact seals (DDU) on both sides. This advanced seal design incorporates two sealing lips that press lightly against the inner ring, creating an exceptionally effective barrier against fine contaminants and fluids. It is designed for applications where maximum environmental protection and lubricant security are paramount, offering performance similar or superior to standard 2RS seals.
Performance Characteristics
This bearing is engineered for durability and reliability in harsh conditions. The double lip seals provide superior defence against ingress, supporting long, maintenance-free operational life. We produce the 6203 DDU to standard industrial tolerances, with the capability to provide P5 precision grades, ensuring excellent rotational accuracy and smoothness for precision applications that also require robust sealing.
Applications
The superior sealing of the 6203 DDU makes it particularly suitable for demanding applications across various industries, including:
- Industrial Electric Motors & Gearboxes: For use in washdown environments, food processing, agriculture, and material handling where exposure to water, dust, or chemicals is common.
- Automotive Components: Wheel hubs, alternators, and other underbonnet or underbody applications exposed to road spray and grit.
- Agricultural & Construction Machinery: Drives, rollers, and idlers in equipment operating in highly contaminated outdoor conditions.
- Pumps and Fans: Units requiring reliable sealing against the medium being pumped or in dusty air streams.
