Answers to several questions about the tension pulley of the synchronous belt pulley

Question: When designing the tensioner and tensioner of the timing belt wheel, should the diameter be as small as possible?How should the diameter be determined?
For example, 8M arc tooth synchronous belt wheel, select the tensioner, according to the manual, select the minimum number of teeth 22, the corresponding diameter 54.65? ? 
Pulley
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The tension wheel of the timing belt is not as low as possible, and the small teeth are bad, which is greatly restricted by the installation room space.In the case of installation indoor space permitting, it is best to be slightly larger.The specific choice depends on
The tightening force depends on the space of the installation site. 
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How to determine if the tension pulley does not have a buckle? 
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If the installation space allows, it is best to be slightly larger, the main consideration is that the speed of the pulley should not be too high.
The key to whether to bring a flat washer depends on the installation structure, the column type or the vertical type and the supporting direction.
The design standards and calculation methods of timing belts are studied.Two "00s" are missing from the standard power bar. 
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It is recommended to be a little bigger, with the ribs together, so that the damage to the timing belt will be less. 
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Can the tensioner be replaced by a rolling bearing? 
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The tightening wheel is used for tightening, and it is generally used in situations where the distance between the management positions cannot be adjusted. Because the tightening side must be placed in a large tension distance, and the tensioning wheel is also easy to shake, usually the tensioning wheel is placed on the loose edge of the belt , Tighten
The tightening mechanism of the wheel, the tightening wheel is pressed on the inner side of the loose edge, and the tightening wheel should be as close as possible to the large eccentric wheel to prevent the small eccentric wheel from lowering too much.The tensioner wheel presses on the outside of the loose edge, it makes the belt bear
Bending in the opposite direction will reduce the service life. This kind of machinery and equipment is more common in the transmission device that must expand the edge strip or the indoor space design is restricted.
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Is there a requirement for this line in the guide? 
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Can the tensioner be replaced by a rolling bearing? 
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No
Rolling bearings should be lubricated
And the tensioner is made of tapered like a cotton rope tuo.
The tension wheel has no edges. 
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If in your design, the timing belt does not need to be ribbed, you can also use the bearing to press on the back of the pulley to be used as a tensioner. 
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The light wheel can be used as a tension wheel.There is no specification limit, the wheels can be placed on both sides of the timing belt, and the wheels are basically not harmful to the service life of the transmission belt. 
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According to the design of synchronous belt transmission, it is not good if the hemming is too large or too small