1. It is easy to cause stress concentration: the contact shape between V-shaped idler and belt is V-shaped, which is easy to cause local stress concentration of belt under pressure, which may lead to accelerated wear or permanent deformation of belt.
2. Not suitable for conveying small granular materials: V-shaped idlers have small supporting area for materials during operation. If the conveyed material particles are relatively small, the material may be stuck or missed.
3. High energy consumption: Because the V-shaped idler generates large friction when the belt runs, it will increase the energy consumption of the system.
4. Maintenance difficulty: V-shaped idler has complex structure and many internal cages. If it needs to be repaired or replaced, it needs certain professional knowledge and operation skills.
5. Loud noise: Due to the constant friction between the V-shaped idler and the belt, it will produce great noise and increase the noise pollution of the working environment.
It should be noted that the disadvantages of V-shaped idlers may be different for different application scenarios and material conveying requirements. The above is only an introduction to the general shortcomings, and the specific use needs to be evaluated according to the actual situation.