Belt type SPB wedge belts
16.3mm wide · 13mm deep · Multiple leading brands
SPB wedge belts are built for heavier drives, carrying more power than SPA while keeping the drive compact.
You’ll find SPB belts on large motors, pumps and compressors, big fans, air handling units and cooling
towers, crushers, sawmills, and industrial and agricultural machinery. We stock SPB belts from several leading
manufacturers, so you can choose the right balance of performance and price. Search by the code on the old
belt, such as SPB2500, and use the filters to narrow it down by length or brand.
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OptibeltOur premier brand, for long life on demanding drives
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MegadyneHigh-quality Italian belts for industrial drives
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BandoJapanese quality for industrial and agricultural use
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GatesOne of the world’s best-known belt makers
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PIXGood-value belts for general-purpose drives
Finding the right SPB belt
Reading the codeSPB2500 means an SPB belt with a 2500mm datum length (Ld). Wedge belts are almost always sized by datum length in millimetres, which is measured at the belt’s pitch line rather than round the inside or outside.
Which brand?Every belt here fits the same SPB pulleys. Choose Optibelt for the longest life on hard-working or continuous drives, or a value brand for occasional-use machinery.
SPB or B?An SPB belt is 16.3mm wide and 13mm deep. A classical B belt is a similar width but shallower, at 11mm, and sits differently in the pulley, so measure the depth to be sure.
Tip: on drives with two or more belts, replace them all at once with a matched set of the same brand. For small pulleys, try a cogged XPB belt; for hard-to-reach drives, a maintenance-free SPB belt that never needs re-tensioning.
