Maintenance Guide
1-4
<Adjustment Procedure>
c Make measurements with a Yunitta's tension meter placed at the positions indicated by
the arrows in the figure below and check to make sure that the values are within the
specification value range.
When adjusting the X-motor belt, measure the tension at several positions (at least
five positions) while rotating the pulley and check that the averaged value is within the
specification value range.
x Tension meter input values
Belt type Model
Belt unit weight
(g/m
刷mm)
Belt width
(mm)
Belt span
(mm)
Timing belt XM All models 2.5 20 119
Timing belt XB All models 3.8 60 1157
x Position of measurement
x Specification values
1. Factory default setting
X-belt (timing belt XB): 1070 r 50N
X-motor belt (timing belt XM): 175 r 20N
2. Readjustment on market
X-belt (timing belt XB): If the tension becomes less than 650N, readjust
the belt tension.
X-motor belt (timing belt XM): If the tension becomes less than 100N, readjust
the belt tension.
X-axis
Rear
X-belt
X-motor
belt
Front
Y-axis
Rear
Y-belt
Y-belt
Front
Y-motor bracket
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