Sankyo SANDEX 11AR - Manual (Page 33)

Unit 11
Repairs and maintenance
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10.3 Troubleshooting procedures (2)
NATURE OF PROBLEM ASSUMED CAUSE CORRECTION
VIBRATION
Output rotating section
Backlash, torsion, deflection in
input system
Check input drive system
Output rotating section Loose linkage in input system Change linkage elements, tighten bolts
Output rotating section Rotation lag in input system Change rotation transmission component
Output rotating section Insufficient motor power Increase motor power rating
Output rotating section Clutch brake timing Adjust timing cam
Output rotating section Cam flaking Replace cam, reduce load on output shaft
Input rotating section
Rotating components are
physically unbalanced
Balance components
Input rotating section Rotating components are eccentric Align centers
Residual vibration
Insufficient torsional rigidity in
output system
Increase rigidity of output system
Residual vibration
Momentum in output system is too
intense
Select a larger indexing drive model
Overall Frame deformity Increase rigidity of mounting base
TEMPERATURE RISE
Entire housing Heat caused by agitation Check lubrication oil level and viscosity
Bearing burnout Rotating speed too high Adjust eccentric flange
Cam, cam follower burnout Too much preload Check lubrication
Bearing burnout Insufficient lubrication Check lubrication
OIL LEAKAGE
Input/output shaft Broken sealing device Replace sealing device, install dust cover
Flange surface Broken O-ring Replace parts
Oil plug Lubricating oil splashes Change oil plug part number
Mounting hole surface
Starting hole for tapping goes all
the way through
Apply sealant to mounting
BROKEN SHAFT
Input shaft Damage due to material fatigue Reduce overhanging load
Output shaft Shock load Install torque limiter on output shaft
Key shaft Fretting corrosion Change friction linkage
Rust Ambicient conditions Apply rust inhibitor or paint surface