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V-Belt Basics

V-Belt Basics. Means of Power Transmission. V-Belts Chains Gears Timing Belts. V-Belts and V-Belt Drives.

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V-Belt Basics

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  1. V-Belt Basics

  2. Means of Power Transmission • V-Belts • Chains • Gears • Timing Belts

  3. V-Belts and V-Belt Drives The function of a belt is to simply transfer rotation from the powered pulley to one or more driven pulleys. The belt must be designed and manufactured to transfer this torque efficiently and reliably.

  4. V-Belts have been around since the early 20th century V-Belts and V-Belt Drives

  5. V-Belts work using the principle of the ”wedge” V-Belts and V-Belt Drives

  6. V-Belts are available in thousands of sizes and configurations Primary function is to transmit power from a primary source (motor) to a secondary “driven” unit V-Belts and V-Belt Drives

  7. V-Belt Characteristics • Less expensive than other forms of power transmission • Start, stop and run smoothly • Operate noiselessly and without lubrication • Absorb objectionable and harmful vibrations • Clean and requires minimum maintenance • Rugged and long lasting • Provide a wide selection of speed ranges • Cover an extremely wide horsepower range • Easy to install and simple to replace • Relatively unaffected by moisture, abrasive dusts, or extreme variations in temperature

  8. V-Belt Drive Terms

  9. V-Belt Construction Tension Section Tensile Members Compression Section

  10. Types of Belts • Classical or Multiple V-Belts • Fractional Horse-Power or Light Duty V-Belts • Narrow or Wedge Multiple V-Belts • Double Angle or Serpentine V-Belts • Banded Belts • V-Ribbed Belts • Variable Speed Belts • Trapezoidal Synchronous or Timing Belts • High Torque Synchronous belts • Specialty Type Belting

  11. V-Belt - works on the principle of the wedge and relies on tension to create friction on the sidewall of the sheave to transmit power Synchronous or timing belt - relies on accurate and smooth meshing of the teeth on the belt with the grooves of the sprocket Two Major Belt Categories

  12. WrappedMolded which has a fabric cover and is molded into a V-shape Raw Edge which is cured and then cut into a V-shape Two Major Types of V-Belts

  13. 1. Protective fabric cover impregnated with rubber 2. Tension Section - synthetic rubber compounded to stretch as belt bends 3. Cords - synthetic fiber cords carry the power and minimise stretch 4. Compression Section - synthetic rubber compound to support cords evenly and compress as belt bends Wrapped V-Belt Construction

  14. 1. Tension Section - specially woven stress-relived fabric 2. Cords - synthetic high modulus cord to carry high loads with minimal stretch 3. Compression Section - Stiflex rubber compound and precision molded cogs increase flexibility and supports cords 4. Raw Edge Side Walls - provide uniform anti-slip surface, greater flexibility and allow more cord Raw Edge V-Belt Construction

  15. Performs up to 4%more efficiently Generates less heatbuild up Allows smaller pulley diameters Increased power ratings Provides longer life Advantages Raw Edge vs. Wrapped

  16. Classical or Multiple V-Belts Gold Ribbon Cog Belt Raw Edge Classical Premium Product Super Blue Ribbon Wrapped Molded Classical Highest Volume Belt Super II V-Belts Raw Edge Classical Extreme Duty

  17. Fractional HorsepowerLight-Duty V-Belts Durapower II FHP Raw Edge FHP Line Durapower FHP Standard FHP Line XDV Xtra Duty V-Belt Premium Lawn/Garden Line

  18. Narrow or Wedge Multiple Belts Power Wedge Cog V-Belts Raw Edge Increased HP Capability Super Power Wedge V-Belts Wrapped Molded Increased HP Capability

  19. Banded Belts Gold Ribbon Cog-Band Raw Edge Premium Product Super Vee-Band Wrapped Molded Standard product Wedge-Band Cog-Band Raw Edge Higher HP Wedge-Band Wrapped Wrapped Molded Higher HP

  20. Synchronous Belts RPP Plus Dual RPP RPP Panther Synchro-Cog Timing Belt Synchro-Cog Dual Timing Belt

  21. Specialty Belts Double Angle V-Belts Dry Can Belting Thoro-Twist V-Belts

  22. www.CarlisleBelts.com from www.c-rproducts.com sales@c-rproducts.com Tel: +44 1327 701030 Fax: +44 1327 701031

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