BlackStar DS80P14H - Double-Single 80 Pitch Taper Lock Sprocket - 14 Tooth D Section The 6/C240 has a 7/8"

The 6/C240 has a 7/8" width

The SPB1650 is used for general-purpose industrial drives

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so the Megadyne 3/B240 interchanges with Gates

BlackStar DS80P14H - Double-Single 80 Pitch Taper Lock Sprocket - 14 Tooth D Section The 6/C240 has a 7/8"The BlackStar DS80P14H is a 80 pitch double single strand Taper Lock roller chain sprocket with 14 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket requires a Taper Lock Bushing (sold separately). Specifications Part Number DS80P14H Chain Pitch 80 Number of Teeth 14 Bore Type QD Hub Style Taper Lock Bushing Required Taper Lock Bushing Strand Count Double