This is 50.8mm OD Coupling manufactured by Ruland. The manufacturer part number is JD32/51-92Y.

Ruland 50.8mm OD Coupling

Manufacturer:

Ruland

Manufacturer Part No:

JD32/51-92Y

Enrgtech Part No:

ET20148717

Warranty:

Manufacturer

£ 11.21

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Coupling Types:

Curved Jaw Coupling

Misalignment - Parallel:

0.15mm

Misalignment - Angular:

0.9°

Outside Diameter:

50.8mm

Misalignment - Axial:

1.27mm

Datasheet(Technical Reference)

Ruland Coupling Comparison Guide(Technical Reference)