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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.)
15.8 Reduction Belt [Motor Reversing Type]
15.8.1 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.
15.8.2 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
15.8.3 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)