Calculated Bearing Lifetime
 The table shows the calculated service life of commonly needed equipment. EP-Calculation calculates the service life of the bearings and combines the information with the service life of the equipment.
This is due to the fact that the equipment structures are designed for such a stress level that fatigue does not show up in the load factor of the product's life cycle. The stress level corresponds to the fact that the load does not cause fatigue, i.e. the machine wears without tiring.
Bearing Lifetime in Hours
Household appliances generally 500 - 2 000
Devices which used occasionally 2 000 - 4 000
- cars
Elevators (Lifts) 8 000 - 12 000
Conveyors and small electric motors 12 000 - 20 000
Several track-laying vehicles 20 000 - 40 000
Large electric motors and pumps 80 000 - 200 000
Power Plant Generators
Ship propellers bearings
Lifetime in Kilometers
Wheel bearings on a road vehicle
- Passenger vehicles 200 000
At present, many car models are not performing the required service life in km. This is due to the bearings lack of protection against water and dirt.
- Trucks and buses 300 000 ..
Railway carriages over short distances 800 000 - 1 500 000
Railway carriages on long journeys 3 000 000
Locomotives over short distances 3 000 000 - 4 000 000
Electric and diesel locomotives
long distances 3 000 000 - 5 000 000
The bearing life time in hours or kilometers can be set proportionally. This is because it is easier to compare devices. The ratio of an hour (60 minutes) to 100 km is 1.618, i.e. The Golden Ratio (1.9% accuracy). Above is a table provided by the bearing manufacturers.
1.4.2015*10:15 (1033- 358)
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