Troubleshooting　linear actuator

Linipower Jack

*Most jack problems are caused by improper lubrication, improper selection, or improper installation.
If any trouble occurs, please take appropriate measures according to this Troubleshooting guide.

1 Gear case damage
2 Input shaft damage
3 Bearing damage
4 Abnormal wear of the traveling nut or worm wheel
5 Ball nut damage or abnormal wear
6 Damage to the screw shaft, abnormal wear, and abnormal noise from the screw shaft
7 Gear case surface temperature abnormality (over 80°C)
回答へ
1 Gear case damage
Cause 1 overload countermeasure Reduce the load or change the jack to one with the appropriate capacity.
Cause 2 Inappropriate support countermeasure Install the jack on a sturdy base and center it accurately.
Cause 3 impact countermeasure Install a shock absorber to prevent shocks.
Return to list
2 Input shaft damage
Cause 1 Poor centering countermeasure Use of a cylindrical coupling etc. may cause damage to the shaft. Please use a flexible coupling.
countermeasure Adjust to the required concentricity.
Cause 2 Excessive overhang load countermeasure Adjust the value so that it is equal to or less than the catalog value.
Cause 3 overload countermeasure Please refer to Gear Case Damage 1.
Cause 4 Shock load countermeasure Please use safety devices to prevent shock loads.
Cause 5 Excessive input countermeasure When connecting several jacks in series, the input shaft of the first jack is limited by its shaft strength. If the strength exceeds the catalog value, reduce the load or change to a jack with a larger capacity.
Return to list
3 Bearing damage
Cause 1 overload countermeasure Please refer to Gear Case Damage 1.
Cause 2 Excessive overhang load countermeasure Refer to input shaft damage 2.
Cause 3 Coupling misalignment countermeasure Refer to Input shaft damage 1.
Cause 4 Coupling axial direction adjustment countermeasure Adjust the position and length of the coupling so that no axial load is applied to the input shaft.
Cause 5 External force acting on worm wheel bearings countermeasure The bearing is preloaded to a specified amount, but the input shaft can rotate freely when no load is connected. If it feels heavy, some force may be being applied to the input shaft in the axial direction, so remove it.
Cause 6 Poor lubrication countermeasure Refer to Section 5. Maintenance and Inspection in this Instruction Manuals and perform the necessary lubrication.
Cause 7 Impact load countermeasure Refer to 4. Input shaft damage.
Return to list
4 Abnormal wear of the traveling nut or worm wheel
Cause 1 overload countermeasure Please refer to Gear Case Damage 1.
Cause 2 Poor lubrication countermeasure Please refer to bearing damage 6.
Cause 3 Improper adjustment or installation countermeasure The load should be applied coaxially to the screw shaft.
Return to list
5 Ball nut damage or abnormal wear
Cause 1 overload countermeasure Please refer to Gear Case Damage 1.
Cause 2 Improper adjustment or installation countermeasure The load should be applied coaxially to the screw shaft.
Cause 3 Poor lubrication countermeasure Please refer to bearing damage 6.
Cause 4 Poor selection countermeasure Please reconfirm the relationship between life and load in the catalog.
Return to list
6 Damage to the screw shaft, abnormal wear, and abnormal noise from the screw shaft
Cause 1 overload countermeasure Please refer to Gear Case Damage 1.
Cause 2 Improper adjustment or installation countermeasure Please refer to Ball Nut Damage 2.
Cause 3 Lateral load countermeasure Install a guide or similar to prevent lateral load from being applied.
Cause 4 Poor lubrication countermeasure Please refer to bearing damage 6.
Return to list
7 Gear case surface temperature abnormality (over 80°C)
Cause 1 overload countermeasure Please refer to Gear Case Damage 1.
Cause 2 Poor lubrication countermeasure Please refer to bearing damage 6.
Cause 3 Poor centering countermeasure Refer to Input shaft damage 1.
countermeasure Please refer to screw shaft damage 3.
Return to list