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Motor efficiencies are well known, IE2 (high efficiency) and IE3 (premium efficiency. Depending on how much you are willing to invest, you pay your money and make your choice, but are you selecting your geared motors in the same manner? If not, then you should be!
Choosing the most efficient geared motor unit takes a little more consideration as there is currently not industry standard, but you can rest assured that an educated choice can be the RIGHT choice.
Ranging from under 50% up to 95%, efficiencies are dependent on many factors – unit size, required ratio and the type of internal gearing utilised. So you may ask, where do I start? Well, check out this working example:-
A conveyor requires a right angle drive solution generating a torque of 1,300Nm with an operating speed of approximately 15rpm – this results in a calculated absorbed power of 2.04kW.
So here’s three solutions based on the above:
So now onto the payback period. The annual operating costs can vary by several hundreds between the worm units and helical bevels. The initial purchase price for the helical bevel would be higher, but a simple calculation would show a total cost of ownership (TCO) for both versions, indicating when payback is achieved and the full benefit of the efficiency savings start to be realised.
As an example, the purchase price of the more efficient unit could easily be £500 higher, but the operational savings would result in a quicker payback period, as well as a reduction of your carbon footprint and contribution towards your CSR commitments.
In short, just remember, IE2 and IE3 motor efficiencies can vary by just a few percent, but different types of gearboxes can vary in efficiency by over 40% - so it’s always a wise decision to consider this when making a selection.
Fenner produce a comprehensive range of geared drives and are able to provide all the relevant operational efficiency information when selecting drive packages for your specific applications.
Why not give us a call on 0121 508 6000 and speak with one of our highly trained engineers or alternatively visit our Fenner website www.fptgroup.com for more information.
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