Tension adjustment bolt (M4 × 35)
Recommended clamping torque: 8.8 N·m
4) Mount the new timing belt.
5) Temporarily clamp the motor set which was dismounted in Step 2) above to the
arm 2 with four (4) flange head bolts (M5 × 16). Pass the axis 3 timing belt to
the axis 3 motor pulley, then exert a tension, using the axis 3 tension
adjustment bolt (M4 × 35).
While pulling the axis 3 motor base by means of the axis 3 tension adjustment
bolt, measure the tension on the tension meter. At a position where the
tension has reached 49 to 57 N, tighten the flange head bolts.
The values used for the tension meter are tabled below.
Value of tension [N] Unit mass [g/m] Belt width [mm] Span [mm]
49 ~ 57 2.2 10 232
6) Connect the connectors and perform home point setting for the axis 3.
7) Carry out a test operation of the axis 3 and make sure that each part operates
properly.
8) Mount the arm 2 cover. Now replacement of the axis 3 timing belt completes.
STE 85306
– 48 –
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