An in-depth explanation of the differences between these two choices.
07/12/2018
What is the difference between a grid coupling and a gear coupling?
Flexible couplings can be broken down into elastomeric and metallic types. Both grid and gear couplings fall into the lubricated category of metallic couplings as outlined in Image 1.
![Image 1. Hierarchy of flexible couplings including gear and grid coupling](/sites/default/files/0718/HI-Pump-Graph-0718.png)
![Image 2. Close-coupled grid coupling.](/sites/default/files/0718/figure-2_5-picture-1.jpg)
![Image 3. Close-coupled gear coupling](/sites/default/files/0718/figure-2_6-picture-1.jpg)
- two hubs
- two seals
- two gaskets
- a grid element
- either an axially split or vertically split (perpendicular to the shaft)cover
![Image 4. Spacer gear coupling](/sites/default/files/0718/figure-2_7-picture-1.jpg)
See other HI Pump FAQs articles here.