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.
Bearings for
Generators
- DGBB Serie Normal Series
- DGBB Custom Series
- CRB Standard Series
- CRB Custom Series
- ACBB Normal Series
- ACBB Custom Series
Generators Sector
A specific area of use within the Electrical macro-area is certainly represented by Generators. Main areas of interest in this category are:
- Monitoring of Temperatures and Vibrations;
- Presence of Eddy Currents;
- Protection from Contaminants;
- Type of lubrication provided (greasing or oil bath).
Machine Diagnostics
Where the energy production and transformation is required, be able to monitor the correct machines functioning is fundamental, avoiding dangerous dispersions and overloads. In this sense, components (including bearings) must be able to meet thermal and vibrational imposed requirements.
Often, infact, eddy currents production occours: these are generated by electrical accumulation on components (not connected to the grounding system) and capable to produce harmful electric shocks.
Electrical insulation
Another aspect must to be considered is the electrical insulation type, designed for the machine. Also in this case, bearing technology developed solutions capable to reply to specific needs: starting from insulated solutions (hybrid bearings, with ceramic balls), up to conductive solutions (lubricants and controlled clearances).
Load Types and Accelerated Life Test
Depending on the applied load kind, various solutions are available: both to withstand Radial Load (DGBB or CRB) and Axial Load (ACBB). Adding, operating conditions are amplified on bench, according to the Standard ISO 281: 2007, in order to replicate consuption phenomena and failure signals, thus determining the useful life of the bearing.
Key features
1. Analysis & Technical Feasibility, in order to pass the Homologation Test on Final Customer Appliance;
2. Documentations & PPAP;
3. Coupling tollerances and Clearances, designed to meet mounting exigences;
4. Super pure 100Cr6 steels to increase the bearing life;
5. Ceramic Balls: to ensure a proper electrical insulation;
6. Seals and Lubricant Materials, to ensure the thermal behavior with applicance conditions;
7. Life Test, on bench, monitoring temperatures and vibrations;
8. Sealing infiltration test, against the intrusion from contaminants;
9. Comparative tests with similar product, market standard or customized solutions.
Our Challenges
1. Appliance requirements
- Mounting specifics;
- Noise and Vibrations;
- Environmental conditions;
2. Homologation needs
- Accelerated Life test, on bench;
- Resistance to developed heat;
- Sealing efficiency (ahead intrusions from contaminants).