What is a V-Belt?

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A Wrapped Type V- Belt Machine is a flexible machine element used to transmit power between a set of grooved pulleys or sheaves. They are characterized as belts having a trapezium cross-section. V-belts are the most widely used belt drives since their geometry causes them to wedge tightly into the groove as the tension is increased. As the belt wedges into the groove, friction between the surface of the belt is increased, allowing high torques to be transmitted. The increased friction minimizes the loss of power through slippage.



An entire Classic V-belt Machine can be regarded as a composite material composed of different types of rubber and reinforcements. In its usual application, a v-belt is subjected to combined tensile and compressive stresses. The top side of a v-belt is subjected to a tensile force directed longitudinally, while the bottom side is compressed due to the compression against the grooves and bending as a belt segment passes the pulley. Moreover, a different type of material is also needed at the surface of the belt. Ideal material for the surface must have a high coefficient of friction and increased wear resistance.

• Fabric Cover: This part of the v-belt has higher abrasion and contamination resistance. The cover protects the internals of the Agricultural V-belt Machine from harmful external effects such as a chemical attack, corrosion, and temperature. The materials used for covers are patented by different manufacturers. An example of these materials is aramid or Kevlar fiber.
  In terms of structure, v-belts can be categorized as wrapped belts and raw edge belts. Wrapped v-belts are considered standard v-belts with all sides wrapped in a fabric cover. Wrapped v-belts have a higher resistance against external elements and quieter operation. However, the downside is a lower coefficient of friction resulting in power loss. Wrapped Cutting Type V- Belt Machines are used on applications that require some amount of slippage without damaging the belt.In many synchronous conveying applications, Timing Belt Machine must be replaced as fast as possible.
  
  So finding ways to reduce the time it takes to change a timing belt is an ongoing challenge for users. After all, every hour spent disassembling machinery and re-fitting or installing a belt is an hour of lost production that costs precious time and money.V-Belt Geometry Terminologies
  
  The cross-section of a v-belt is generally defined as a trapezium with the top and bottom sides in parallel. The type of V-belt Moulds can be defined by the dimensions of this trapezium. These dimensions are necessary for matching the belt with the appropriate pulley. In addition, v-belts are also defined by other geometries such as the location of the pitch line, inside and outside lengths, and so on. All of these are necessary when selecting and ordering a v-belt. Below is a summary of the important terms and definitions of v-belt geometry.