Magnaloy offers a complete
line of flexible drive couplings providing shaft size and performance specifications for
most applications. Magnaloy's availability makes selection of the proper coupling simple
and quick. Installation should be in accordance with Magnaloy's installation instructions.
A. Several specifics must be considered to make the best
choice of couplings:
- Type of prime mover and load characteristics
- Shaft Diameters and key sizes or spline configuration
- Horsepower rating of equipment to be coupled
- Maximum operating speed
- Maximum operating misalignment
- Clearance limitations
B.Calculate the effective hp/100 rpm using the appropriate
service factor and select the coupling size based on this calculation.
Effective HP/100 RPM = Rated HP * Service Factor * 100 / RPM
C.Verify your selection.
- Check for maximum bore size
- Check Dimensions for adequate clearances
- Indicate any special insert specification or other special
considerations
| SERVICE FACTORS - Load Characteristics |
Load
Classification |
Type
of Prime Mover |
Std Motor
or Turbine |
High Torque
Motor |
I.C. Engine
6 or more cyl. |
I.C. Engine
less than 6 cyl. |
| Uniform |
1.0 |
1.5 |
1.5 |
2.0** |
| Moderate |
1.5 |
2.0 |
2.0* |
2.5** |
| Heavy |
2.0** |
2.5** |
2.5** |
3.0** |
|
* Recommend use of Urethane or Hytrel insert.
**Recommend use of Hytrel insert and steel bushing with spline bores. |
Uniform Load: Steady loading, non-reversing, torque does not exceed rating.
Moderate Load: Uneven loading with moderate shock, frequent starts, infrequent reversals, peak
torque may exceed average rating of prime mover by 125%.
Heavy Load: Uneven Loading with heavy shock, frequent reversals, peak torque may exceed
average rating of the prime mover by 150%. |
