MAINTENANCE MANUAL
115
STE 85357
3.6
Filling Grease to Ball Screw Spline Unit and Replacement
The ball screw spline unit is to be replaced by our service engineer. If it is replaced by
the customer, we will not guarantee any consequential trouble or accident.
!
DANGER
• The ball screw spline unit should be replaced with a new one only after the controller power
supply plug is removed. If the work is done while the power is connected, you may get an
electric shock or the robot may malfunction, which is very dangerous.
!
CAUTION
• Because the timing belt, nut and pulley are disconnected, the mechanical home point shifts
and proper control cannot be done. To avoid this, home return operation is necessary after
replacement of the ball screw spline unit. For the home return pr
ocedures, see “Section 7,
Robot Home Point and Position Detector Error.”
3.6.1
Type of Ball Screw Spline Unit
The ball screw spline unit used in this robot is shown below.
When you place an order for the ball screw spline unit for replacement, specify the
robot model (THL500, THL600, THL700) and our drawing number.
Table 3.6 Ball screw spline unit (THL500, THL600, THL700)
Description
Stroke
Our drawing
No.
Unit code
Ball screw spline unit
150mm
H852666
Y610A3LT0
300mm
H852702
Y610A3ME0
* Stroke 300 mm is optional.