Treatment If Any Value Is Out Of The Standard Range; Adjustment Procedure ①; Adjustment Procedure ② - Yamaha SIGMA-G5SII Service Information

(9) Push the head plate laterally using the push-pull gauge. (Refer to Fig. C29).
Measure the sliding friction on the whole section of the ball screw and make sure that
the values are all within the standard range. (Standard Range: 1000g or less on the
whole movable section range)
(If any value is out of standard range, refer to Item 3.2.3).
(10) If there is no problem in Step 9, tighten the four bolts
completely and fix the X-axis motor.
(11) Tighten the coupling bolt (M3) on the ball screw side.
M3 Bolt
Servo motor

3.2.3. Treatment if any value is out of the standard range:

3.2.3.1. Adjustment Procedure ①
(1) Loosen the set bolt for the ball screw nut.
(2) Slide the head to the motor side and tighten the bolt.
Note: The procedure in this Item cannot be performed
together with the procedure in
3.2.3.2. Adjustment Procedure ②
(1) Loosen the set bolt for the bearing holder on the
ball screw side. Slide the head to the opposite side
of the motor and tighten the bearing holder set bolt.
Note: The procedure ① cannot be performed
together with the procedure ②.
Fig.C29
Fig.C31
100/273
Service Information
Push-pull Gauge
* When the X-axis motor is to be attached, the home
position adjustment is not required.
M5 Bolt
Item 17.
SI1705004E-00=SIGMA-G5SII Service Manual
For Service Engineer
M5 Bolt
Fig.C30
Fig.C32
M5 Bolt
Fig.C33