BlackStar 4B70SK - QD Sheave 3.1/8" 0" length with the A

0" length with the A cross section and fits the same sheaves — combination-branded belts carry both numbers (A78 / 4L800)

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The 6/8V1900 is rated for continuous operation from -22°F to 176°F

BlackStar 4B70SK - QD Sheave 3.1/8" 0" length with the AThe BlackStar 4B70SK is a 4 groove qd sheave for B section belts, manufactured from cast iron. Requires a QD Type SK Bushing (sold separately) to mount to your shaft. Specifications Part Number 4B70SK Product Type QD Sheave Number of Grooves 4 Belt Profile B Outside Diameter 7. 35" Material Cast Iron Approx. Weight 13. 500 lbs Bushing Required QD Type SK Bushing Pitch Diameter 7. 0" Compatible Belts A, B, 4L, 5L Bushing Required This sheave requires a