Rotary Table Troubleshooting Guide
Rotary Table Troubleshooting
First - always read the Users Manual.
| Symptom | Possible Cause | Possible Fixes |
|---|---|---|
| Knob will not turn. | Could have pushed the knob in causing it to bind. | Check position of knob. Pull out if possible. |
| Table will not turn. | Thumb lock may be active. | Check thumb lock to make sure it's not engaged. |
| Could have pushed the knob in causing it to bind. | Check position of knob. Pull out if possible. | |
| Backlash adjustment mesh set screw tightened too much. May need to be backed off. | The set screw needs to be adjusted per Mesh Adjustment directions. | |
| Load is mounted touching the optical aperture. You don't want any load touching the center aperture as it will gall or wear causing binding. | Remount load keeping it away from the aperture. | |
| Motor stalls or table is loud. | Backlash adjustment mesh set screw tightened too much. May need to be backed off. | The set screw needs to be adjusted per Mesh Adjustment directions. |
| Too much play in the table. | Backlash is excessive. | The set screw needs to be adjusted per Mesh Adjustment direction |
| Table is loud when operating. | If an older table and travel distance is minimal but continuous repetition, it may not have enough grease causing bearing wear. | Remove red plug in top of table and rotate until the worm gear is visible. Add grease if necessary. |
| Table grinds or catches when turning. | Check environment. If in a dusty application such as grinding, dirt may be accumulating inside and cause abnormal wear on the bearings. | May need to be returned for repair, at a nominal cost. |
| If a wet application, water accumulating internally may have caused the bearings to rust. | May need to be returned for repair, at a nominal cost. | |
| If the table will be operated in a wet, dusty or otherwise dirty environment where contaminates may accumulate, inform your Velmex Application Engineer in order to quote based on special needs. This could reduce added cost for future repairs. | ||
| Motorized Table: Motor stalls or table is loud. | Backlash adjustment mesh set screw tightened too much. May need to be backed off. | The set screw needs to be adjusted per Mesh Adjustment directions. |
| Motorized Table: Motor cannot be removed. | May not have used a motor with 2 flats set at 90° on the shaft. | Reset with a motor with 2 flats set at 90° on the shaft. See Rotary Table Motor Attachment. |
Turntable Troubleshooting
| Symptom | Possible Cause | Possible Fixes |
|---|---|---|
| Table will not turn. | The locking knob (free motion control) may be engaged. | Check the free motion knob to make sure it's not engaged. |
| It is possible with extended use, the set screws in the bottom will back out. This may cause the top plate to touch or scrape the bottom plate causing galling. | Re-tighten the 2 set screws one after the other. The first screw will need to be removed from the center bottom to access the internal set screw. After tightening the internal set screw, replace and tighten the first screw. | |
| Rotation is not smooth or catches. | If mounted, it's possible the mounting screws are not sunk completely in the mounting holes and stick-up slightly from the base. | Check to make sure the mounting screws are below the top of the base. |
| Rotation is not smooth or is too free and will not lock for fine tuning. | If the top plate has been removed, it is possible the table wasn't reassembled correctly or the half-moon locking pin that presses on the shaft to control the smooth motion is out of place or missing. | Check the assembly instructions for the A2505T & A2505TS to make all components are there and in the proper place. You should not have to remove the top plate for the A4007T or A4007TS. |
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