Optibelt Kraftband · 3 bands
Banded V-belts · Three belts joined by a top band · Fits standard pulleys
Optibelt Kraftband banded belts join three V-belts together with a tough top band, so they work as one
unit. The band stops individual belts turning over, whipping or jumping off the pulleys, which makes Kraftband
ideal for heavy, shock-loaded drives and long centre distances, such as crushers and mills, compressors,
pumps, large fans, and agricultural machinery. Search by the code on the old belt, and use the filters to
narrow it down by section and length.
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No turnoverThe top band holds the belts upright in the grooves
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No belt whipStays stable on long drives and pulsating loads
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Even load sharingAll three belts are made and matched together
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Standard pulleysRuns in standard pulleys of the same section
Choosing a 3-band belt
Reading the codeBanded belt codes give the number of bands, the section and the length. For example, 3/SPB 2500 means three SPB belts joined together, each with a 2500mm datum length.
Matching the pulleysA 3-band belt needs pulleys with at least three grooves of the same section. On wider pulleys you can run more than one banded belt side by side, so a 6-groove pulley can take two 3-band belts.
FittingCheck the pulley grooves for wear and the pulleys for alignment before fitting. Worn or misaligned grooves can cut the top band. Tension the belt to Optibelt’s recommended value.
Tip: replacing a set of single belts with a banded belt is a common fix on drives where belts keep turning over or jumping off. Ask us if you’d like help working out the right banded belt.
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Other band countsSee 2, 4, 5, 6, 8, 10, 12 band Kraftband belts.
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Single belts?Browse our SPB, SPC and classical V-belts.
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Still not sure?Call 020 8138 2848 with the code or drive details and we'll find the right belt.
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Buying for a business?Open a trade account for trade pricing on maintenance stock and repeat orders.
