Technical Data Coupling Handling
Jaw-flex Couplings LN Series Handling
Centering
The more accurate the initial centering of the coupling, the less stress it will experience during operation.
Changes during operation caused by factors such as bearing wear, mounting surface subsidence, temperature-induced state changes, and vibrations can reduce the life of the coupling or your equipment. Center the coupling periodically.
The coupling’s allowable angular misalignment and parallel is alignment are correlated to each other. Increasing one factor decreases the other, so the factors need to be considered together.
| Model No. | Spider hardness | Allowable Misalignment | ||
|---|---|---|---|---|
| Angular misalignment (Angular Misalignment ) deg |
Parallel misalignment (Parallel Misalignment ) mm |
End play (Axial Displacement ) mm |
||
| LN24 | 98A | 0.9 | 0.10 | -0.5～+1.4 |
| 64D | 0.8 | 0.07 | ||
| LN28 | 98A | 0.9 | 0.11 | -0.7～+1.5 |
| 64D | 0.8 | 0.08 | ||
| LN38 | 98A | 0.9 | 0.12 | -0.7～+1.8 |
| 64D | 0.8 | 0.09 | ||
Each angular misalignment value shown is the value applicable when the corresponding parallel misalignment value is 0, and vice-versa.
Relationship between angular misalignment and parallel misalignment
Operating environment
Note that the spiders will gradually deteriorate over time due to humidity, atmospheric gases, heat, and ultraviolet rays.
Use the couplings in a well ventilated location with an ambient temperature of –30 to 80°C, and low humidity and dust.
Avoid use in locations having corrosive liquids or gases, or locations of possible fires or explosions.
Avoid outdoor use since the couplings are not water- or corrosion-resistant.
Inspection
After operating the equipment for one or two hours, check the angular misalignment and the parallel misalignment once again.
Also check for problem parts and spider wear periodically (such as every six months to one year).
Spiders are wear parts. Replace them periodically.
