BlackStar L190 1 7/8 - Jaw Coupling Pitch-41 The Turner UEFCS210 31 is

The Turner UEFCS210 31 is a 4-bolt flange cartridge mounted bearing unit with a 1-15/16" bore

The D&D Global 270XL1770 is a synchronous timing belt with XL-pitch profile

so a 16/B112 from any major manufacturer shares the same cross-section and length and runs on the same sheaves

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BlackStar L190 1 7/8 - Jaw Coupling Pitch-41 The Turner UEFCS210 31 isThe BlackStar L190 1 7 8 is a jaw coupling, manufactured from steel. Jaw couplings consist of two metal hubs and a flexible elastomer spider element. They absorb shock loads, dampen vibration, and accommodate angular, parallel, and axial shaft misalignment ideal for motor to pump, motor to gearbox, and general industrial drive connections. Specifications Part Number L190 1 7 8 Product Type Jaw Coupling Material Steel Approx. Weight 11. 625 lbs Cross