| Data required for Coupling
Selection. |
| • |
Application
details (for service factor) |
| • |
Power and speed of the
driver |
| • |
Shaft details of the driving
and driven equipment |
| (1) |
Determine the service factor
(SF) from the application and classification lists noted
below. |
| (2) |
Calculate the maximum HP/100
rpm rating:
HP/100 rpm =
(HP x 100 x SF) / rpm
Select the coupling which has a higher max rating. |
| (3) |
Check the Limiting Conditions: |
| a |
Check the hub bore capacity
is suitable |
| b |
Check the speed capability
and specify whether the coupling requires balancing. |
| c |
Check coupling dimensions
such as DBSE, Overall Length and Outside Diameter. |
|
Driver: Steam Turbine
(100 HP at 1800 rpm)
Driven equipment: Reciprocating Compressor
Turbine Bore: 2.375 in
Compressor Bore: 2.000 in
Distance Between Shaft Ends: 5.00 in |
| Service Factor for the Steam Turbine
& Reciprocating Compressor: SF=2 |
HP/100 rpm =
(100 HP x 100 x 2)/1800
HP/100 rpm = 11.1 |
|
Coupling selection based on the
maximum rating - ES 269-6
Coupling Bore Capacity: 2 11/16 in
Maximum speed for the ES 269-6 is 7100 rpm Unbalanced
Minimum Allowable DBSE: 2.875 in
The ES 269-6 is acceptable
in this application
|
|
