Gearmotors and Reducers
No.3 The noise and vibration are large
No.3 The noise and vibration are large
Reducer (without motor) [Cause and countermeasure]
The noise and vibration are large
Defect of the gear head (3.1)
To the top of the list of "Cause of the failure and countermeasure (Reducer (without motor))"
| Classification No. | Cause | Countermeasure | Inspection procedure and action | Judging criterion |
|---|---|---|---|---|
| 3.1.1 | Scratch on the gear (intermittent sound) | Repair by NISSEI CORPORATION | Contact NISSEI CORPORATION | No abnormal noise occurs |
| 3.1.2 | Wear of the gear (continuous sound) | Repair by NISSEI CORPORATION | Contact NISSEI CORPORATION | No abnormal noise occurs |
| 3.1.3 | Damage or breakage of the bearing or shaft | Repair by NISSEI CORPORATION | No abnormal noise occurs and the output shaft rotates smoothly | Contact NISSEI CORPORATION for the reverse rotation torque and check whether it is within the allowable range No abnormal vibration nor noise occurs |
Defect of the installation or couplings (3.2)
To the top of the list of "Cause of the failure and countermeasure (Reducer (without motor))"
| Classification No. | Cause | Countermeasure | Inspection procedure and action | Judging criterion |
|---|---|---|---|---|
| 3.2.1 | Loosening of the case mounting bolts | Retighten the bolts | Check whether there is no play in the reducer and, if any, retighten the bolts for connection with the gear | Contact NISSEI CORPORATION for the tightening torque and check whether it is within the allowable range. |
| 3.2.2 | Inconsistency of the centers of the shafts | Align the centers of the shafts with each other | Check the misalignment amount | Report the misalignment amount to the coupling manufacturer and check whether it is within the allowable range |
| 3.2.3 | Insufficient rigidity of the mounting base | Reinforce the mounting base to improve the rigidity | Check that no abnormal vibration nor noise occurs | No abnormal vibration nor noise occurs |
Defect of a load part or operating conditions (3.3)
To the top of the list of "Cause of the failure and countermeasure (Reducer (without motor))"
| Classification No. | Cause | Countermeasure | Inspection procedure and action | Judging criterion |
|---|---|---|---|---|
| 3.3.1 | Resonance of the load | Displace the resonance point | Adjust the balance of the load part | No abnormal vibration nor noise occurs |