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
Disadvantages:
- 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
OEP Couplings
www.oepcouplings.com