Rh-3Frh/6Frh/12Frh/20Frh Series: Inspecting The J4 Axis Timing Belt - Mitsubishi Electric RH-FRH Series Instruction Manual

5 Maintenance and Inspection

(7) RH-3FRH/6FRH/12FRH/20FRH series: Inspecting the J4 axis timing belt

As shown in Fig. 5-15, the J4 axis timing belt consists of two timing belts: timing belt A <1> and timing belt B <2>.
When adjusting the timing belts, first adjust timing belt B <2> and then proceed to adjust timing belt A <1>.
<The No.2 arm bottom view (Inside of the No.2 arm cover D)>
Shaft
Timing pulley D
<The No.2 arm upper view (Inside of the No.2 arm cover U)>
Fig.5-15 ： Inspecting the J4 axis timing belt(RH-3FRH/6FRH/12FRH/20FRH)
Inspection procedure of the timing belt of J4 axis are shown below.
1) Refer to Page 101 "Fig. 5.3.2: Installing/removing the
cover D.
2) Visually confirm that the symptoms indicated in
occurred with the timing belt.
3) Refer to Page 111, "(2) Timing belt tension
For replacement of the timing belt, check the serial numbers of the robot arm and the controller and contact
the dealer.
4) Install the No.2 arm cover U and No.2 arm cover D securely as before and finish inspection.
Maintenance and inspection procedures
5-119
<2> Timing belt B
Adjust first
Timing belt B adjustment screw
*The RH-6FRH/12FRH/20FRH series is also equivalent although the figure is RH-3FRH.
*The RH-6FRH/12FRH/20FRH series is also equivalent although the figure is RH-3FRH.
<1> Timing belt A
Push
Push
Timing pulley C
Timing pulley A
Timing belt B adjustment screw
cover", and remove the No.2 arm cover U and No.2
Page 110, "(1) Timing belt replacement period"
measurement", and confirm the belt tension.
Adjust next
Timing pulley A
Timing pulley B
have not