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Bearings for the
Bike, E-Bike and Micro E-Mobility

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  • DGBB Thin Series
  • DGBB Normal Series
  • DGBB Electric Motor Quality
  • DGBB Custom Series
  • ACBB Normal Series
  • ACBB Custom Series
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Bike, E-Bike, Micro E-Mobility appliances’ sector

Bike, E-Bike and Micro-Electric Mobility sector is probably one of the most popular topics in urban and extra-urban development of small, medium and large cities. Involved topics are many:

  • Standard configurations for Private Use & Public Mobility;
  • High performance for the competitive sports sector (countryside,hills, mountains);
  • Customizations for Professional Sports use (Track, Competition);
  • Hobby use and private maintenance.
Radial Contact & Angular Contact

Radial Contact & Angular Contact

Both Normal and Thin versions are available for different uses: to withstand pure radial load, pure axial and combined load.

Ceramic Balls for High Smoothness

Ceramic Balls for High Smoothness

On request, hybrid solutions are available, equipped with ceramic balls. These are subjected to specific surface treatments in order to reduce friction and ensure contact accuracy.

DLC Treatment – Hard Like a Diamond

DLC Treatment – Hard Like a Diamond

DLC technology is used for professional & competitive use, where maximum performance is required in terms of high smoothness & minimum friction. The DLC surface finish is capable to create a metallic micro film on the rings (less than 0.2 µm) in order to obtain performances and longevity.

Key features

Key features

1. Super pure 100Cr6 steels to increase the bearing life;
2. Superfinishing to reduce surface roughness;
3. Fine grinding to obtain P5 or P4 tollerances on the raceways;
4. G10 grade balls to reduce the friction;
5. Ceramic Balls: Black with Nitride Compound or White with Zirconium Dioxide;
6. Extremely refined lubricating greases to reduce startinng and running torque;
7. No contacts rubber seals, on both sides or custom on single side;
8. High contact rubber seals, on both sides or custom on single side;
9. Maximum rotation speed.

Our Challenges

Our Challenges

1. Operative conditions
- Urban;
- Extra-Urban & Off Road;
- Race & Competition;

2. Low Friction Technology
- Minimum absorbed currents;
- MAX RPM;
- High Smoothness.

Custom bearings?

The Technical Assistance Service of Silvio Colombo S.p.A. is able to develop customized products and services both in co-design with the customer's technical department and in complete autonomy based on the customer's requests.

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