Manual

Dobot MG400 User Guide
Issue V1.5 (2023-03-20) User Guide Copyright © Yuejiang Technology Co., Ltd
26
√
Cable, cable
protective cover and
air pipe
Observe the moving part of the cable, check
whether the cable is damaged, whether there is
local bending or distortion; Check whether the
cable protective cover is damaged. Check
whether the air pipe is locally bent, twisted,
damaged, etc.
√
Joint bolts
Check the torque based on Table 8.2 (push aside
the joint rubber to check)
√
Tool mounting bolts
Check the torque based on Table 8.2.
√
Motor
Abnormal heating or sound confirmation
√
Brake
Check whether the robot arm or end-effector will
fall when the servo is powered off
√
Synchronous belt
Check whether the synchronous belt is worn out,
elongated, broken, etc.
Table 8.2 lists the bolted tightening torque table.
Table 8.2 Bolt tightening torque table
Nominal diameter of
screw thread
Countersunk head
hexagon socket screw
Hexagon socket button
head screws
Hexagon socket cap
screws
2.5 mm
0.3 Nm
0.3 Nm
0.5 Nm
3 mm
0.5 Nm
0.6 Nm
2 Nm
4 mm
-
2 Nm
-
5 mm
-
-
7.5 Nm
The tightening torque varies depending on the type of base metal or bolt. When it is not
specified, please contact Dobot technical engineers.
In addition, overall maintenance is required every 20,000 hours of operation time or every 4
years (select the shorter of the two periods for maintenance). If you are not clear about the
maintenance processes, please contact Dobot technical engineer.