BlackStar 10C120J STL - QD Sheave 20M Section The Turner SFB4 2 1/4

The Turner SFB4 2 1/4 T is a spherical 4-bolt flange block mounted bearing unit with a 1/4" bore

so a 1926V507 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

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BlackStar 10C120J STL - QD Sheave 20M Section The Turner SFB4 2 1/4The BlackStar 10C120J STL is a 10 groove qd sheave, manufactured from cast iron. Requires a QD Type J Bushing (sold separately) to mount to your shaft. Specifications Part Number 10C120J STL Product Type QD Sheave Number of Grooves 10 Outside Diameter 12. 40" Material Cast Iron Approx. Weight 124. 300 lbs Belt Profile C Bushing Required QD Type J Bushing Pitch Diameter 12. 0" Compatible Belts C Bushing Required This sheave requires a QD Type J Bushing