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The BlackStar BK47 7/8 is a 1-groove fixed bore sheave for B-section belts
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"name":"Gates TP154L050 PowerGrip Twin Power Timing Belts"
com/s/files/1/0666/7721/products/Micro_VBelt_stock_photo_edit_258c5fc4-ea5b-4662-8582-47a2e4c990cc
BlackStar 11E SLEEVE - Jaw Coupling Sleeve - 4" Bore Neoprene The BlackStar BK47 7/8 isThe BlackStar 11E SLEEVE is a jaw coupling sleeve, manufactured from steel. Features a 4" bore for direct shaft mounting. Replacement spider element for jaw coupling assemblies. The flexible insert sits between two metal hubs to absorb shock loads, dampen torsional vibration, and compensate for shaft misalignment in motor driven applications. Specifications Part Number 11E SLEEVE Product Type Jaw Coupling Sleeve Bore Size 4" Coupling Size 11 Outside
