Pilot bore v pulleys for belt A (SPA)

 

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Pulleys with pilot bore for belt A (SPA) are the most movable pulleys in all pulleys. This is because they combine good value and hold the largest space on the horsepower-to-turn diagram than their average application. The pilot bore helps to more easily open the desired diameter of the shaft. Their construction material is cast iron GG25 and is available in the following Nominal Diameters:

SPA-1 (Simplex)
Dimensions :
From 50mm
To 400mm

SPA-3 (Triplex)
Dimensions :
From 75mm
To 400mm

SPA-2 (Duplex)
Dimensions :
From 63mm
To 400mm