Gearmotors and Reducers
No.1 The gear does not rotate, The speed does not increase
No.1 The gear does not rotate, The speed does not increase
Reducer (without motor) [Cause and countermeasure]
The gear does not rotate, The speed does not increase
Defect of the gear head (1.1)
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| Classification No. | Cause | Countermeasure | Inspection procedure and action | Judging criterion |
|---|---|---|---|---|
| 1.1.1 | Breakage or wear of the gear | 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 |
| 1.1.2 | 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 (1.2)
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| Classification No. | Cause | Countermeasure | Inspection procedure and action | Judging criterion |
|---|---|---|---|---|
| 1.2.1 | Breakage of the case installation part | Replacement | Check whether the case is broken or cracked | The case is not broken or cracked |
| 1.2.2 | 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 |
| 1.2.3 | The couplings spin free | Fix the couplings with the shaft | Check whether the key or mounting screws are installed securely | There is no relative sliding of the shaft connected with the output shaft by the couplings |
Defect of a load part or operating conditions (1.3)
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 |
|---|---|---|---|---|
| 1.3.1 | Selection error for the load | Re-selection and replacement | Check that the current value of the driving force is within the rated current value | It is equivalent to or below the rated current value written on the nameplate of the driving part |
| 1.3.2 | Overload | Remove the load | Check that the current value of the driving force is within the rated current value | It is equivalent to or below the rated current value written on the nameplate of the driving part |
| 1.3.3 | Excessive overhung load | Remove the load | Check that it is equivalent to or less than the allowable O.H.L. value | It is equivalent to or less than the allowable O.H.L. value written on the catalog |
| 1.3.4 | Contact Positioning Control | Removal of interference | Check that there is no intervention | There is no intervention |
| 1.3.5 | Too much tension of the belt and chain | Loosen them | Check that the tension is equivalent to or less than the value recommended by the manufacturers | Report the slack amount to the belt and chain manufacturers and check whether it is within the allowable range |