The efficiency of a Dishwasher is measured as the number of washing cycles per Kilowatt-hour of electricity. Approximately 80% of the total energy used by a dishwasher goes to heat water. To improve efficiency much effort has been focused in reducing the amount of water used. The layout and number of spray arms is designed to ensure that every dish comes out sparkling clean.
Typically dishwashers are placed in the kitchen. Therefore noise and vibration requirements are stringent. This is reflected in the newer machines which have an improved noise level, in many cases below 45 dB.
The bearings need to conform to the technical requirements of:
- High washing efficiency
- Long service life
- Low noise and vibration
Some dishwasher designs include a unique water pump, driven by a single-phase induction motor, performing both the duties of washing and draining. In other cases two different pumps can be found, one dedicated to the washing cycle and the other to draining.
SKF can offer a variety of products to support both options.
Bushings for draining pumps
Draining pumps are usually supported by special Bushings with low friction and self-lubrificating capabilities
Single row deep groove ball bearings for washing pumps
A single phase induction motor often drives the washing pumps
Rubber axial seal for water pump
Axial seal in water material gives the possibilities to reduce the number of components
PTFE Axial seal for water pump
Axial Seal in PTFE material, gives the possibilities to reduce the number of components
Magnetized bearing seal
Low cost for an integrated solution respect the standard axial and radial dimension of a standard bearing
Linear guide for dishwasher
To support the baskets that hold the dishes and pottery are usually adopted 4 plastic rollers