2.5.1  Type of Motor 
  The motors employed in this robot are shown below.    When you place an order for 
a new motor, make sure of the robot model (TH650A), axis name, type and our 
drawing number according to the following table. 
As the input gears are used for the axes 1 and 2, a key is provided between each 
motor shaft and input gear.    At motor replacement, key alignment is also necessary.   
It is recommended, therefore, that the input gear be replaced at the same time with 
motor replacement. 
For the axis 3 also, a pulley on the motor side is driven by means of the key. 
For our drawing numbers on the input gear and pulley and type of the key, also see 
the table below. 
 
Description  Axis name  Type  Our drawing No. 
AC servo motor  Axis 1  MSMD092S2U  S746326 
Axis 3  MSMD042S2V  S746336 
Axis 4  MSMD042S1C  S816701 
Input gear  Axis 1    S816839 
Axis 2    S816840 
Key  Axis 1 
×
×
 
Key  Axes 2, 3 
Square key 5×5×16 
 
STE 85306 
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