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5. All followers are worn. Rebuilding by factory is best remedy.
6. Output shaft to follower wheel connection is loose. Factory repair is recommended.
7. Customer output member connection loose. Tighten output member and dowel in place.
SYMPTOM
: INDEXER IS NOISY
1. Check if output is backlash-free in dwell.
2. Check for excess looseness in motion. Cam or follower could be broken
3. Is the noise from the reducer rather than the indexer?
4. Occasionally, variable speed D.C. controls cause the input to pulsate and create noise. Adjust
the Internal Resistance Compensation within control.
5. Are input and output connections backlash free?
6. Is the unit overloaded? Loads can change over a period of time due to wear.
7. Is the unit support (base) rigid?
8. The unit could be overheated and have loose preload.
9. Is there sufficient oil in the unit? Is oil used consistent with DESTACO specifications? (See
Index Drive Lubrication
)
SYMPTOM:
PREMATURE WEAR ON FOLLOWERS
1. Actual forces on the unit could be greater than calculated due to loose input or output.
2. Lack of oil or wrong oil used (See Lubrication section of Index Drive Service).
3. Frequent or severe overloads.
4. Improper input systems (where there is not a constant velocity input) will cause an erratic
output or excessive output vibration. This will result in forces several times higher than
calculated (see input recommendations).
5. Defective cam or follower wheel assembly.
SYMPTOM:
OUTPUT MOVEMENT IS ERRATIC AND VIBRATING
1. Input does not run at a constant velocity. The prime objective of a good input connection to
an Index Drive is to maintain a constant shock free velocity (see input recommendations).
Motor running too slowly could also cause an erratic output.
2. Output connections loose, flexing, or winding up. Check all connections (see recommended
output connections).
3. Excessive friction drag on output. Disconnect indexer and investigate friction torque.
4. Unit is overloaded due to excessive speed or loads. Contact your Sales Agent to check data
sheet application loads and speeds. Decrease speed.
5. Unit could be internally damaged. Check other symptoms.
6. Unit support is not rigid. Check rigidity of index drive mount with an indicator. Stiffen support
or decrease speed.
