BlackStar H50H27 - 50 Pitch Split Taper Sprocket - 27 Tooth Pitch-180 The Turner UCHA213 40 is

The Turner UCHA213 40 is a hanger bearing mounted bearing unit with a 2-1/2" bore

so a 1600-P8M-50 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

2800-14M-170 is a timing belt used on positive

Is XPZ2187 interchangeable with Gates XPZ2187

BlackStar H50H27 - 50 Pitch Split Taper Sprocket - 27 Tooth Pitch-180 The Turner UCHA213 40 isThe BlackStar H50H27 is a 50 pitch Split Taper roller chain sprocket with 27 teeth, precision manufactured from SAE 1045 steel with induction hardened teeth for extended wear life and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket requires a Split Taper Bushing (sold separately). Specifications Part Number H50H27 Chain Pitch 50 Number of Teeth 27 Bore Type Split Taper Hub Style Split Taper Bushing Required