Dobot CR3 - Page 65

Dobot CR Series User Guide
Issue V1.1 (2023-04-27) User Guide Copyright © Yuejiang Technology Co., Ltd.
58
Daily
3 months
6 months
item
√
Robot clean
Wipe off dirt, dust, cutting residue on the body
with water or 10% alcohol
√
Joint bolts
Check the torque of joint bolts based on the
specified tightening torque table (Push aside the
rubber to check)
√
Tool mounting
bolts
Check the torque based on the specified
tightening torque table
√
Motor
Confirm abnormal heating or sound
√
Brake
Check whether the robot arm or end-effector will
fall when the servo is powered off
√
Reducer
Check abnormal vibration, noise, and oil leakage
The bolt tightening torque is shown in Table 8.2.
Table 8.2 Bolt tightening torque
Bolt size
Outer hexagonal bolt
(joint)
Inner hexagonal bolt (12.9)
Hexagonal bolt
(rear cover)
3 mm / 0.118 in
2 Nm
2.4 Nm
0.7 Nm
4 mm / 0.157 in
4 Nm
4.5 Nm
-
5 mm / 0.197 in
7.5 Nm
9 Nm
-
6 mm / 0.236 in
15 Nm
18 Nm
-
8 mm / 0.32 in
-
37 Nm
-
The tightening torques vary depending on the type of base metal or bolt. When it is not
specified, please contact Dobot technical engineer.
In addition, 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.