Grizzly G0911 Owner's Manual page 52

To clean and lubricate Z-Axis table lift:
1. DISCONNECT MACHINE FROM POWER!
2. Access lower cabinet by opening front access
door.
3. Use stiff brush to loosen existing build-up and
vacuum all contaminants from leadscrews,
synchronous belts, belt tensioners, and step-
per motors (see Figures 66–67).
4.
Use clean shop rags to protect synchronous
belts from cleaning fluids and lubricating oil
(see Figures 66–67).
— If leadscrews have heavy contamination,
use stiff-bristled brush and rag with min-
eral spirits to clean threads.
Synchronous Belt
Leadscrew
(1 of 2)
Figure 66. Left Z-Axis table lift components.
Synchronous Belt
Stepper Motor
Belt Tensioner
Figure 67. Right Z-Axis table lift components.
-50-
Stepper Motor
Belt Tensioner
Leadscrew
(1 of 2)
5. Allow leadscrews to dry after cleaning, and
apply light coating of sewing machine oil.
6. Move table up and down the full range of
movement to distribute oil over leadscrews.
Belts & Pulleys
The rotational direction of pulleys is controlled
by the X and Y stepper motors, which are given
directional coordinates by the CNC software.
The pulleys are toothed and engage with cogged
synchronous belts to prevent slipping when the
laser head moves along the linear guideways (see
Figure 68). The bearings for these pulleys are
sealed and maintenance-free.
Synchronous Belt
Figure 68. Synchronous belt and pulley.
NOTICE
DO NOT clean belts with acids, alkalis, oils,
or solvents. Contact with chemicals and
oils will accelerate belt deterioration.
To inspect and clean pulley belts and cogs:
1.
DISCONNECT MACHINE FROM POWER!
2.
Slowly move laser head along X- and Y-axes
while inspecting condition of belts and pulley
cogs with flashlight.
Model G0911–G0914 (Mfd. Since 05/21)
Pulley