BlackStar 2-5V550SDS STL - QD Sheave 4-Bolt Flange Cartridge "name": "What does the H

"name": "What does the H in 370H200 mean

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BlackStar 2-5V550SDS STL - QD Sheave 4-Bolt Flange Cartridge "name": "What does the HThe BlackStar 2 5V550SDS STL is a 2 groove qd sheave for 5V section belts, manufactured from cast iron. Requires a QD Type SDS Bushing (sold separately). Specifications Part Number 2 5V550SDS STL Product Type QD Sheave Number of Grooves 2 Belt Profile 5V Outside Diameter 5. 50" Bushing Required QD Type SDS Bushing Material Cast Iron Approx. Weight 7. 900 lbs Pitch Diameter 55. 0" Compatible Belts 5V Bushing Required This sheave requires a QD Type SDS