You searched for "parallel misalignment"
Ruland
Ruland Beam Coupling, 25mm Outside Diameter, 10mm Bore, 38.1mm Length Coupler
Part: FCMR25-10-10-A
Ruland beam coupling for moderate power applications with precision alignment.
Ruland
Ruland Beam Coupling, 25mm Outside Diameter, 8mm Bore, 31.8mm Length Coupler
Part: PSMR25-8-8-A
Aluminium beam coupling for medium-duty machinery with angular misalignment tolerance.