Advantages:

Protects shaft-support bearings by exerting consistently low reactive forces, even under large misalignments
Homokinetic transmission – driving and driven shafts rotate at exactly the same speed at all times
Zero backlash and high torsional stiffness
Electrical insulation
Accommodates moderate radial misalignment in a short length
Accommodates relatively large axial misalignment
Easy installation in blind or difficult installations – all block couplings have through bores
Inexpensive replaceable wear element
Internal grease reservoir provides continuous flow of lubrication driven by centrifugal force, allowing coupling to survive harsh, dirty environments
Somewhat “failsafe”, in the sense that the driving hub will continue to turn the driven hub after failure of the midsection

Disavantages:

Accommodates a relatively small angular misalignment
No mechanical “fuse” feature – unlike standard Oldham designs, under overload, all subcomponents of this coupling must be replaced, rather than one inexpensive wear element

Typical Applications:

Submersible pumps, agricultural and garden equipment

Parameter Name	Parameter Value
Type	flexible
Installation system	sleeve and shear pin
Torque (Nm)	0.98 - 215
Rotational speed (rpm)	0 - 5000