Power Transmission Coupling/ Selection guide for power transmission coupling

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Complete guide to selection of Power Transmission Couplings / Industrial Coupling, Couplings for Motor, Pumps, Gear Box, Grinder, Cement Industries, mining Etc.


Power Transmission Couplings:

Whats are Power Transmission Couplings & their uses:

Defination: 
  • A coupling is device used to connect two shafts together at their ends for the purpose of power transmission.
  • It also acts as a fuse between driver (Motor) & Driven (Gear box, Crusher, etc), as it get disconnected at the time when the transmission power exceeds the coupling designed capacity.
Motor & Pump connected through coupling

Requirement for Coupling & its function:
  • Accommodates misalignment.(i.e Parallel/Radial, Axial, Angular misalignment).
  • Dampen Vibration (by absorbing Shocks), Oscillation.
  • Limiting power & torque transmission.
Types of shaft misalignment

Types of couplings commonly used in Industries:
  1. Star/Jaw Coupling.
  2. HRC Couplings..
  3. Pin Bush Couplings (PBC).
  4. Full Gear Couplings/Half Gear Coupling.
  5. Tyre Couplings.
  6. Resilient/Grid Coupling.
  7. Fluid Coupling.
1.Star/Jaw Coupling .
  • Suitable for Simple,Common & non critical applications.
  • Accommodates Misalignment (Parallel, Angular & Axial).
  • Can cater application with large DBSE (Distance between shaft ends) with spacer arrangements.
  • Also available with External Spider Star for immediate replacement of spare  without dismounting the coupling.
JAW Coupling
2. HRC Couplings:
  • Similar to Star coupling but have comparatively high power rating due to its reliable design.
  • Fail safe & can sustain Incidental misalignment.
  • Suitable for Flywheel application.
HRC Couplings
3. Pin bush Couplings:
  • Simple Construction.
  • Easy to be assembled & dissembled.
  • Easy to replace spare (without dismounting the coupling).
  • Silent & Vibration free (can be used for high power transmission , Vibration).
Pin Bush Couplings
4. Full Gear/ Half Gear Couplings:
  • Suitable for area where high torque transmission required.
  • Manufactured with Carbon Steel & fine surface finish with flawless dimensional accuracy.
  • Can be used in area with High Temp. , Moisture area (can sustain corrosion).
  • Comparative to other couplings can sustain large axial misalignment.  
Half Gear Coupling
Full Gear Coupling
5. Tyre Coupling:
  • Flexible Design.
  • Sustain more vibration, torsional oscillations in comparison to other couplings.
  • Suitable for application with large Axial, Parallel & Angular misalignment.
  • Easy to replace spare (without dismounting the coupling).


Tyre Coupling
6. Grid / Resilient Coupling:
  • Sustain high shock.
  • Suitable for reversible drive application.
  • High Torsional flexibility.
  • Easy to replace Grids spare (without dismounting the coupling).


Grid / Resilient Coupling
7. Disc Coupling:
  • Suitable for area where high torque transmission required.
  • Manufactured with Carbon Steel & fine surface finish with flawless dimensional accuracy.
  • Can be used in area with High Temp. , Moisture area (can sustain corrosion).
  • Comparative to other couplings can sustain large axial misalignment.  
Disc Coupling
8. Fluid / Hydro Coupling:
Fluid / Hydro coupling

Hope this content will help you with the selection of right coupling for your desired application & understanding the types of coupling will help you to select right coupling for your application.
If you like my content please comment & share my blog & have any queries regarding this matter please feel free to consult by commenting.

Thanks & regards

LJ

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