For a replacement coupling, “same as the old one” is not a dimension. Measure the shaft or use the equipment drawing. Do this on both sides; motor and driven shafts are often different.
Record these dimensions
| Article | Que confirmer |
|---|---|
| Shaft diameter | Measure the actual shaft; note the unit and required fit if controlled. |
| Keyway width and depth | Use the shaft drawing where possible. If measured, state that the values are field measurements. |
| Hub length available | Check shoulders, seals, guards and nearby equipment. |
| Shaft end position | Note how far the shaft enters the hub and any axial gap requirement. |
| Setscrew or locking detail | Photograph and dimension it if the replacement must match an existing arrangement. |
Why a photo is not enough
Perspective can make a 28 mm and 30 mm bore look identical, and an assembled guard can hide the hub length. Photos are excellent for identifying construction and damage; dimensions are what make the part fit.
Demander un devis pour un accouplement NM
Veuillez nous indiquer les dimensions de l'arbre, la vitesse, le facteur de marche et la quantité. Nous examinerons le modèle et les détails d'usinage avant de vous établir un devis.
