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300J7 has 7 ribs and a 30 in (Pitch Length)
It is a direct replacement for Jason Industrial 16/5V1000
com/s/files/1/0666/7721/products/J_Section_e5936991-52cf-478c-8d58-7a8a2d4260e4
"text": "The B248 is used for general-purpose industrial drives
"sku":"11/BK135-D&D"
BlackStar 3-5V550SDS STL - QD Sheave flexco-sr-r5 300J7 has 7 ribs andThe BlackStar 3 5V550SDS STL is a 3 groove qd sheave for 5V section belts, manufactured from cast iron. Requires a QD Type SDS Bushing (sold separately). Specifications Part Number 3 5V550SDS STL Product Type QD Sheave Number of Grooves 3 Belt Profile 5V Outside Diameter 5. 50" Bushing Required QD Type SDS Bushing Material Cast Iron Approx. Weight 9. 000 lbs Pitch Diameter 55. 0" Compatible Belts 5V Bushing Required This sheave requires a QD Type SDS
