Pulleys and Timing Belt
The axis 3 transmission contains two pulleys and a timing belt, as illustrated in
Figure 6-11. The input pulley is mounted on the motor output shaft and the output
pulley is connected to the lead screw.
The gear ratio of the belt drive is the ratio of the output pulley to the input pulley,
calculated according to the number of teeth on each pulley.
The belt drive used in the SCORA-ER 14 has a a ratio of 80:21.
Thus, for each rotation (360°) of the
input pulley, the output pulley moves
94°, or approximately one-quarter of
a rotation.
OUTPUT PULLEY
INPUT PULLEY
Figure 6-11: Pulleys and Timing Belt
SCORA-ER 14 6 - 8 User’s Manual
9603
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