IAI America RCS3PCR-SS8C - Manual (Page 110)

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11. Maintenance and Inspection
100
Tension: 2.5 kgf
Motor-unit affixing bolts
(Use an Allen wrench of 2.5 mm across flats.)
Motor-unit affixing bolts
(Use an Allen wrench of 2.5 mm across flats.)
11.9 Reduction Belt [Motor Reversing Type]
11.9.1 Inspecting the Belt
Remove the pulley cover and visually inspect the belt.
Durability of the reduction belt is affected significantly by the operating condition, and there is no standard
guideline as to when the belt should be replaced.
Generally, the belt is designed to withstand several millions of flexing loads.
As a practical guideline, replace the reduction belt when any of the conditions listed below is observed:
� The teeth and end faces of the belt have worn significantly.
� The belt has swollen due to deposits of oil, etc.
� Cracks and other damages are found on the teeth or back of the belt.
� The belt has broken.
11.9.2 Applicable Belt
� SA4 - 60S2M160R Rubber, cleanroom type (Bando Chemical Industries) 6 mm wide
� SA5 - 60S2M180R Rubber, cleanroom type (Bando Chemical Industries) 6 mm wide
� SA6 - 60S2M190R Rubber, cleanroom type (Bando Chemical Industries) 6 mm wide
� SA7 - 150S3M255U (Bando Chemical Industries) 15 mm wide
� SS7 - S3M222 (Bando Chemical Industries) 6 mm wide
� SS8 - P3M264 (Tsubakimoto Chain) 10 mm wide
11.9.3 Adjusting the Belt Tension (SA4R, SA5R, SA6R)
Remove the pulley cover and motor-end cover, and loosen the
four motor affixing bolts.
Pass a looped strong string (or long tie-band) around the motor
cover and pull it with a tension gauge to the specified tension. In
this condition, uniformly tighten the motor-unit affixing bolts.
[Recommended tightening torque for adjustment bolts]
162 N�cm (16.5 kgf-cm)