Flat belts are still very popular for various drives. Besides the long lifetime and the simple handling, another reasons is the high efficiency of up to 98%.
For a long time the drive belts have been used as transmission belts and nowadays are again increasingly used as the lifetime has clearly improved due to the development of the material technique (elastomers).
We are main partners of leading flat belt producers. For every drive concept and transportation situation we choose and provide the appropriate belt.
Upon request we take care of the drive setup or check all existing drives for possible potential improvements.
A flat belt often consists of various layers which are connected via intermediary layers.
The upper side and underside are referred to as top layers and can consist of the following materials:
The medium layer is the tension member that consists of:
To get a better understanding of these belt drives, it is important to know, that the outer area can only realize a limited power transmission with one cord.
The power is transmitted with frictional locking between belt and pulley. With the different surfaces the belt can be adjusted perfectly to the surroundings. Chrome leather for example is suitable for belt pulleys with an oil and water layer as the leather absorbs the humidity retrieving the friction value.
Also with generator drives chrome leather is a popular solution to reduce the so-called “stick-slip-effect“, which usually causes performance fluctuations on the generator.
Why does the flat belt stay on the pulley and does not run off?
Flat belt pulleys are carried out crowned according to DIN 111 or ISO 22. At least one pulley in the drive should be crowned.
Due to the curvature of the pulley, there are different circumferential speeds on the pulley. The fastest circumferential speed is on the curvature vertex.
Each point on the belt´s cross section tries to reach the fastest circumferential speed. Thus the belt centres around the centre of the pulley.
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© Copyright Lütgert & Co. GmbH
Friedrichsdorfer Straße 48
33335 Gütersloh
Germany
Phone: +49 52 41 / 74 07 0
info@luetgert-antriebe.de
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