You searched for "parallel bore"
Ruland
Ruland Beam Coupling, 19mm Outside Diameter, 6mm Bore, 31.8mm Length Coupler
Part: FCMR19-6-6-A
Small aluminium beam coupling for precision rotating equipment connections.
Ruland
Ruland Beam Coupling, 19mm Outside Diameter, 6mm Bore, 22.9mm Length Coupler
Part: PCMR19-6-6-A
Compact aluminium beam coupling for small precision machinery and equipment.
Ruland
Ruland Beam Coupling, 13mm Outside Diameter, 4mm Bore, 19.1mm Length Coupler
Part: PSMR13-4-4-A
Very small beam coupling for miniature precision machinery.
Ruland
Ruland Beam Coupling, 19mm Outside Diameter, 5mm Bore, 22.9mm Length Coupler
Part: PCMR19-6-5-A
Lightweight aluminium beam coupling for precise shaft alignment in compact applications.
Ruland
Ruland Beam Coupling, 13mm Outside Diameter, 3mm Bore, 19.1mm Length Coupler
Part: PCMR13-3-3-A
Tiny beam coupling for small precision machinery and light-duty rotating applications.
Ruland
Ruland Beam Coupling, 19mm Outside Diameter, 4mm Bore, 22.9mm Length Coupler
Part: PCMR19-4-4-A
Lightweight aluminium beam coupling for small precision machinery and light-duty applications.