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Dunlop Variable speed belts

Wide-section variator belts · Industrial & agricultural drives

Dunlop variable speed belts are wide, flexible V-belts designed to run on variable speed pulleys, where the pulley flanges move in and out to change the belt’s working diameter and the speed of the drive. They’re used on variable speed drives and variators in industry, machine tools such as lathes and drilling machines, conveyors, textile and woodworking machinery, and agricultural machinery such as combine harvesters. Search by the code on the old belt, and use the filters to narrow it down by size.

  • Wide sectionGives a wide speed range as the pulleys open and close
  • Flexible constructionBends easily round small variator pulley diameters
  • Strong side gripHolds firmly on the pulley flanges without slipping
  • Industrial & farm dutyFor machine tools, conveyors and combine variators

Choosing a variable speed belt

Three measurementsVariable speed belts are sized by top width, side angle and length, and all three must match the drive. The code on the old belt gives these, so use it if you can.

No code?Measure the top width and the thickness, and the length round the outside of the belt. Tell us the make and model of the machine, as variator belts are often specific to it.

Look after the variatorA worn or sticking variator pulley will ruin a new belt quickly. Check the moving flange slides freely and the belt faces are smooth before fitting.

Tip: never fit a standard V-belt on a variable speed drive. It’s too narrow for the variator pulleys and will give the wrong speed range and wear quickly.

  • Premium alternativeSee Optibelt VARIO POWER variable speed belts from our premier brand.
  • Agricultural machinery?Shop by machine make in our agricultural belts range.
  • Still not sure?Call 020 8138 2848 with the code, measurements or machine details and we'll find the right belt.
  • Buying for a business?Open a trade account for trade pricing on maintenance stock and repeat orders.
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