BLACKBEARING UB-3903-MAX Bearing – 3903 2RS MAX
EAN: 3760365231392
Brand: BLACKBEARING
Type: MAX Bearing
Model: 3903 2RS MAX
Product Code: UB-3903-MAX
The BLACKBEARING UB-3903-MAX is a 3903 2RS MAX full-complement bearing designed for applications requiring high radial load capacity. The MAX design allows the bearing to accommodate more balls than a conventional caged bearing, resulting in increased load capacity.
MAX bearings are particularly suitable for bicycle applications where high radial loads and reliable, rigid bearing support are required. One of their key applications is bicycle frame pivot bearing systems, especially in the rear suspension systems of full-suspension MTB bikes.
The bearing features 2RS seals on both sides, helping to protect the internal components from dust, dirt and moisture while retaining the lubricant inside the bearing.
Key Features
- BLACKBEARING 3903 MAX full-complement bearing
- Increased radial load capacity
- Full-complement, cage-free design
- Designed for high-load applications
- Particularly suitable for bicycle frame pivot points
- Ideal for suspension pivot points on full-suspension MTB bikes
- Double-sided 2RS sealing
- Compact and durable construction
Technical Specifications
- Brand: BLACKBEARING
- Product Type: MAX Bearing
- Model: 3903 2RS MAX
- Product Code: UB-3903-MAX
- Dimensions: 17 × 30 × 10 mm
- Inner Diameter: 17 mm
- Outer Diameter: 30 mm
- Width: 10 mm
- Sealing: 2RS, double-sided
- Design: Full-complement / MAX
- EAN: 3760365231392
Applications
The BLACKBEARING UB-3903-MAX is particularly suitable for:
- Bicycle frame pivot points
- Full-suspension MTB rear suspension systems
- Rear triangle and linkage pivot points
- Bicycle components exposed to high radial loads
- Other mechanical applications requiring increased load capacity
Materials and Shapes
MAX Full-Complement Design
MAX bearings use a full-complement ball configuration without a conventional cage, allowing a greater number of balls to be accommodated inside the bearing. This increases radial load capacity and makes the design particularly suitable for frame pivots and suspension linkage points.
2RS Sealing
The double-sided 2RS seals protect the internal bearing components from external contaminants and moisture, making the bearing well suited to demanding bicycle applications.
In Practice
The BLACKBEARING UB-3903-MAX is particularly advantageous in applications where the bearing is subjected to high radial loads. This makes MAX full-complement bearings a popular choice for bicycle frame pivot points, where significant loads are generated during suspension movement. In full-suspension MTB applications, the combination of high load capacity and effective sealing contributes to reliable operation and long service life.
