Dobot Nova Series - Page 45

Dobot Nova Series User Guide
Issue V1.3 (2023-07-19) User Guide Copyright © Yuejiang Technology Co., Ltd.
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Table 8.1 Check items
Period
Maintenance
item
Maintenance essential
Daily 3 months 6 months
√ Robot clean
Wipe off dirt, dust, cutting residue on
the body with water or 10% alcohol
√ Joint bolts
Check the torque of exposed bolts
based on the specified tightening torque
table
√
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.