Uses for Couplings
- connect two shafts rotating in the same direction
- allow misalignment
Types of Couplings
- Rigid
- Flexible
- Fluid
What are Rigid couplings good for?
positive drive
What are flexible couplings good for?
misalignments
What are fluid couplings good for?
Reduce shocks
Three types of misalignments
- angular
- torsional
- parallel
definition of a rigid coupling
used to connect shafts that are precisely align
examples of rigid couplings
- flange coupling
- sleeve coupling
- ribbed coupling
advantages of flange couplings (3)
- easy installation
- minimum wear
- easy to maintain
sleeve couplings are made of ______ _______
one material
sleeve couplings are used for ____ ____ applications
medium duty
flange couplings are used for ____ ____ applications
heavy duty
Ribbed Coupling
two halves held together by bolts
Advantages of ribbed couplings
- quick installation
- no wear
ribbed couplings are used for ___ _____ applications
heavy duty
Primary applications of flexible couplings
- accommodate misalignments
- transmit torque
working mechanical movement (Flexible couplings)
- flexible flange coupling
- flexible chain
working flexible material (flexible coupling)
- jaw
- shear doughnut
working compression or stretching (flexible coupling)
- jaw
- shear doughnut
- electromagnetic
Definition of Gear Coupling
two external gears with hub, flanged sleeves with internal gear
Gear Couplings allow for ____ & _____ misalignments
axial & angular
Definition of chain coupling
two sprockets and double strands chains
chain couplings accommodate misalignments due to clearances. What are these alignments?
- angular
- axial
- slight amounts of parallel if designed properly
Types of Chain Couplings
- double roller (light to medium duty
- silent (heavy duty)
- plastic (light)
