Marine Engineering

Material flexing couplings typically do not require lubrication and operate in shear or compression and are able to accept angular, parallel and axial misalignment. Material flexing couplings are Jaw coupling,  Sleeve coupling,  Tire coupling,  Disc coupling,  Grid coupling and Diaphragm coupling Jaw Couplings The jaw coupling also known as spider coupling is a material flexing coupling that transmits torque through compression of an elastomeric spider insert placed between two intermeshing jaws. Flex element is commonly made of NBR, polyurethane, Hytrel or Bronze Accommodates misalignment Transmits torque Used for torsional dampening (vibration) Low torque, general purpose applications Sleeve Coupling The sleeve coupling transmits low to medium torque between connected equipment in shear through an elastomeric insert with male splines that mate with female hub splines. The insert material is typically EPDM, Neoprene or Hytrel...

what is meant by coupling? A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. Couplings do not normally allow disconnection of shafts during operation, however, there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both.  Shaft Coupling falls into two main categories:  Material Flexing and  Mechanical Flexing.  Material Flexing Couplings The material flexible types obtain their flexibility from stretching or compressing a resilient material, such as rubber, or from the flexing of thin metallic discs or grid. Material flexing couplings typically do not require lubrication, with the exception of grid couplings and operate in shear or compression and are able to accept angular, parallel and axial misalignment...