The specification below provides the recommended improvements needed to improve product durability. They are ranked from bronze to gold based on the effectiveness of the change in improving durability, with bronze being the minimum and gold being the maximum.
Small gaps at base; removal of turntable
Central rotating spindle in sealed bearing
No gaps at base
Improved reliability of components can reduce early returns and improve brand reputation which, in turn, can lower business costs and increase long-term sales.
To calculate overall cost savings for your business, use the WRAP cost/benefit analysis tool (currently in draft form and available on request).
Some low-end ovens omit the turntable and this will give a saving on the turntable parts such as a separate motor. However, any savings will be offset by having to include a concealed microwave stirrer bar so the impact on production cost may be a small saving or neutral, depending on the overall design.
Rotors for turntable in the centre of the oven are preferred as this location is further from where food collects on the base (as it is below the turntable). This should not incur an additional cost.