Example of designation of the NPX type A coupling with the nominal torque of Mn=360 Nm, hub holes diameters of d1=38 mm, d2= 24 mm, hub holes lengths of l1=55 mm, l2=55 mm, size of 140:
360-38/55-24/55-140 NPX-A Flexible coupling
the ”WD” version – 360-38/55-24/55-140 NPX-A-WD Flexible coupling
no bores – 360-0/55-0/55-140 NPX-A Flexible coupling