5Maintenance and Inspection
Maintenance and inspection procedures 5-68
5.3.4 Replacing Bellows
(1) How to Replace the Top Bellows
and replace the top bellows.
1) Move the J3 axis to the position where the clamp ring becomes visible.
2) Turn off the robot controller's power supply.
3) Remove the clamp ring.
4) Loosen the M4 set screws (two pieces) next to part <1> installed at the top of the ball screw, and remove
the top bellows from the No. 2 arm cover-U.
5) Remove the screws (four M3 x 8 screws) of installation part <2> of the bellows, and remove the bellows.
6) Install the new bellows (four M3 x 8 screws、 Tightening torque 0.8Nm)
7) Align part <1> on the ball screw, and tighten the M4 set screws (two pieces) adjusting to the D cut surface.
8) Install the bellows on the No.2 arm cover-U with clamp ring.
9) Fill the clearance between part <1> and the ball screw with the liquid gasket described in
. or similar material.
Fig.5-10 ： Replace the top bellows(RH-6SQH series)
<1>
<2>
4-Ｍ3 ｘ 8
No. 2 arm cover-U
Ａ
M4 set screws x 2
Clamp ring
Top bellows
Liquid gasket coating position
<1>
<2>
4-M3 x 8 screw
Section Ａ
Ball screw
RH-6SDH：φ20
RH-12SDH/18SDH:φ25
10
Details of D cut surface
D cut surface
