Grizzly G1066R User manual

MODEL G1066R/G1066Z/G1079R
DRUM SANDER
OWNER'S MANUAL
(For models manufactured since 02/24)
Model G1066R Model G1066Z
Model G1079R
177335
Model G1079R Only
COPYRIGHT © MAY, 2002 BY GRIZZLY INDUSTRIAL, INC., REVISED FEBRUARY, 2024 (JP)
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#0443 PRINTED IN TAIWAN V3.02.24
***Keep for Future Reference***

This manual provides critical safety instructions on the proper setup,
operation, maintenance, and service of this machine/tool. Save this
document, refer to it often, and use it to instruct other operators.
Failure to read, understand and follow the instructions in this manual
may result in fire or serious personal injury—including amputation,
electrocution, or death.
The owner of this machine/tool is solely responsible for its safe use.
This responsibility includes but is not limited to proper installation in
a safe environment, personnel training and usage authorization,
proper inspection and maintenance, manual availability and compre-
hension, application of safety devices, cutting/sanding/grinding tool
integrity, and the usage of personal protective equipment.
The manufacturer will not be held liable for injury or property damage
from negligence, improper training, machine modifications or misuse.
Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State
of California to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:
• Lead from lead-based paints.
• Crystalline silica from bricks, cement and other masonry products.
• Arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
Work in a well ventilated area, and work with approved safety equip-
ment, such as those dust masks that are specially designed to filter
out microscopic particles.

Table of Contents
INTRODUCTION............................................... 2
Contact Info ................................................... 2
Machine Differences ...................................... 2
Manual Accuracy ........................................... 2
Identification (G1066R).................................. 3
Identification (G1066Z) .................................. 4
Identification (G1079R).................................. 5
Controls & Components................................. 6
Machine Data Sheet (G1066R) ..................... 9
Machine Data Sheet (G1066Z).....................11
Machine Data Sheet (G1079R) ................... 13
SECTION 1: SAFETY..................................... 15
Safety Instructions for Machinery ................ 15
Additional Safety for Drum Sanders ............ 17
SECTION 2: POWER SUPPLY ...................... 18
SECTION 3: SETUP ....................................... 20
Needed for Setup......................................... 20
Unpacking .................................................... 20
Inventory ...................................................... 21
Site Considerations...................................... 21
Lifting & Placing ........................................... 22
Anchoring to Floor (G1079R) ...................... 22
Assembly ..................................................... 23
Dust Collection............................................. 24
Test Run....................................................... 25
Recommended Adjustments........................ 26
Disabling & Locking Switch (G1079R)......... 27
SECTION 4: OPERATIONS............................ 28
Operation Overview ..................................... 28
Stock Inspection & Requirements ............... 29
Setting Depth of Cut .................................... 30
Setting Conveyor Speed (G1066Z) ............. 30
Monitoring Sanding Load (G1066Z) ............ 31
Sanding........................................................ 31
Sanding Tips ................................................ 32
Choosing Sandpaper ................................... 32
Installing/Replacing Sandpaper ................... 33
SECTION 5: ACCESSORIES ......................... 34
SECTION 6: MAINTENANCE......................... 35
Schedule ...................................................... 35
Cleaning Machine ........................................ 35
Cleaning Sandpaper .................................... 35
Lubrication ................................................... 36
SECTION 7: SERVICE ................................... 37
Troubleshooting ........................................... 37
Tracking & Tensioning Conveyor Belt.......... 39
Making Blocks.............................................. 40
Aligning Drums ............................................ 41
Adjusting Pressure Rollers .......................... 43
Adjusting Dust Scoop .................................. 45
Tensioning/Replacing V-Belts ...................... 45
Replacing Bearings...................................... 47
SECTION 8: WIRING...................................... 48
Wiring Safety Instructions ............................ 48
G1066R Electrical Components .................. 49
G1066R Wiring Diagram.............................. 50
G1066Z Electrical Components................... 51
G1066Z Wiring Diagram .............................. 52
G1079R Electrical Components .................. 53
G1079R Wiring Diagram.............................. 54
SECTION 9: PARTS ....................................... 55
G1066R Stand & Motor ............................... 55
G1066R Conveyor Belt & Table................... 56
G1066R Drums & Rollers ............................ 57
G1066Z Stand & Motor................................ 60
G1066Z Conveyor Belt & Table ................... 61
G1066Z Drums & Rollers ............................ 62
G1079R Stand & Motor ............................... 65
G1079R Conveyor Belt & Table................... 66
G1079R Drums & Rollers ............................ 67
G1066R Labels & Cosmetics ...................... 70
G1066Z Labels & Cosmetics....................... 71
G1079R Labels & Cosmetics ...................... 72
WARRANTY & RETURNS.............................. 73

-2- Model G1066R/Z/G1079R (Mfd. Since 02/24)
INTRODUCTION
We are proud to provide a high-quality owner’s
manual with your new machine!
We made every effort to be exact with the instruc-
tions, specifications, drawings, and photographs
in this manual. Sometimes we make mistakes, but
our policy of continuous improvement also means
that sometimes the machine you receive is
slightly different than shown in the manual
.
If you find this to be the case, and the difference
between the manual and machine leaves you
confused or unsure about something, check our
website for an updated version. We post current
manuals and manual updates for free on our web-
site at
www.grizzly.com.
Alternatively, you can call our Technical Support
for help. Before calling, make sure you write down
the
manufacture date and serial number
from
the machine ID label (see below). This information
is required for us to provide proper tech support,
and it helps us determine if updated documenta-
tion is available for your machine.
Manufacture Date
Serial Number
Manual Accuracy
We stand behind our machines! If you have ques-
tions or need help, contact us with the information
below. Before contacting, make sure you get the
serial number
and manufacture date
from the
machine ID label. This will help us help you faster.
Grizzly Technical Support
1815 W. Battlefield
Springfield, MO 65807
Phone: [phone]
Email: [e-mail]
We want your feedback on this manual. What did
you like about it? Where could it be improved?
Please take a few minutes to give us feedback.
Grizzly Documentation Manager
P.O. Box 2069
Bellingham, WA 98227-2069
Email: [e-mail]
Contact Info
Machine Differences
Models G1066R, G1066Z, and G1079R are heavy-
duty drum sanders with the following differences:
• Model G1066R is a 5 HP, 24" drum sander.
• Model G1066Z is a 5 HP, 24" drum sander
with a variable-speed conveyor and rear
drum height micro-adjustment knobs.
• Model G1079R is a 2 HP, 16" drum sander.

Model G1066R/Z/G1079R (Mfd. Since 02/24) -3-
Identification (G1066R)
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
Top Cover
4" Dust Ports
Rear Access
Panel
Front Access
Panel
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
ON/OFF
Buttons
Rear Sanding Drum Front Sanding Drum
Conveyor Height
Crank Handle
Conveyor
Table w/Belt

-4- Model G1066R/Z/G1079R (Mfd. Since 02/24)
Identification (G1066Z)
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
Top Cover
4" Dust Ports
Rear Access
Panel
Front Access
Panel
Micro-Adjustment
Knob
Micro-Adjustment
Lock Lever
Control
Panel
Front Sanding Drum
Rear Sanding Drum
Conveyor Height
Crank Handle
Conveyor
Table w/Belt

Model G1066R/Z/G1079R (Mfd. Since 02/24) -5-
Identification (G1079R)
Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
Rear Access
Panel
Front Access
Panel
ON/OFF
Buttons
Stand
Front Sanding Drum
Rear Sanding Drum
Conveyor Height
Crank Handle
Conveyor
Table w/Belt
4" Dust Ports
Top Cover

-6- Model G1066R/Z/G1079R (Mfd. Since 02/24)
Controls &
Components
To reduce your risk of
serious injury, read this
entire manual BEFORE
using machine.
Figure 1. G1066R ON/OFF buttons.
A
B
A. ON Button: Push to start motor.
B. OFF Button: Push to stop motor.
Refer to Figures 1–3and the following descrip-
tions to become familiar with the basic con-
trols and components of the Model G1066R.
Understanding these items and how they work will
help you understand the rest of the manual and
stay safe when operating this machine.
G1066R
C. Conveyor Height Crank Handle: Rotate to
raise or lower conveyor table according to
workpiece thickness.
D. Conveyor Table w/Belt (Infeed End):
Height-adjustable table with conveyor belt
that feeds workpieces toward sanding drums.
Figure 2. G1066R front controls.
C
D
Figure 3. G1066R sanding drums.
E. Rear Sanding Drum: Cylindrical drum with
machined surface that is covered in felt.
Typically wrapped with fine grit sandpaper to
perform finish sanding portion of operation.
F. Front Sanding Drum: Cylindrical drum with
machined surface. Typically wrapped with
coarse grit sandpaper to perform thickness
sanding portion of operation.
EF

Model G1066R/Z/G1079R (Mfd. Since 02/24) -7-
Refer to Figures 4–6and the following descrip-
tions to become familiar with the basic con-
trols and components of the Model G1066Z.
Understanding these items and how they work will
help you understand the rest of the manual and
stay safe when operating this machine.
G1066Z
AB
Figure 4. G1066Z control panel.
E
D
C
A. Sanding Motor ON/OFF Buttons: Push to
start/stop sanding motor.
B. Conveyor Motor ON/OFF Buttons: Push to
start/stop conveyor motor.
C. Conveyor Speed Control: Turn to set con-
veyor belt speed between 0–10 (0–60 RPM).
D. Load Meter: Displays total amp draw of
sanding motor.
E. Emergency Stop Button: Stops motors
when pressed and disables ON buttons.
Remains in depressed position until manually
reset. Reset by twisting button clockwise until
it springs outward.
F. Conveyor Height Crank Handle: Rotate to
raise or lower conveyor table according to
workpiece thickness.
G. Depth-of-Cut Scale: Indicates distance
between conveyor table and sanding drums.
H. Conveyor Table w/Belt (Infeed End):
Height-adjustable table with conveyor belt
that feeds workpieces toward sanding drums.
Figure 6. G1066Z sanding drums.
J
IK L
I. Micro-Adjustment Lock Lever (1 of 2):
Tighten to lock micro-adjustment knob in
place.
J. Micro-Adjustment Knob (1 of 2): Rotate
to make fine height adjustments of outfeed
(rear) sanding drum.
K. Rear Sanding Drum: Cylindrical drum with
machined surface that is covered in hook-
and-loop material. Typically wrapped with
fine grit sandpaper to perform finish sanding
portion of operation.
L. Front Sanding Drum: Cylindrical drum with
machined surface that is covered in hook-
and-loop material. Typically wrapped with
coarse grit sandpaper to perform thickness
sanding portion of operation.
Figure 5. G1066Z front controls.
F
GH
A B

-8- Model G1066R/Z/G1079R (Mfd. Since 02/24)
Figure 7. G1079R ON/OFF buttons.
A
B
A. ON Button: Push to start motor. Insert pad-
lock through button to disable (padlock not
included).
B. OFF Button: Push to stop motor.
C. Circuit Breaker Reset Button: Circuit
breaker trips if motor draws excessive current
and overheats. Push to reset circuit breaker
after allowing machine to cool down.
Refer to Figures 7–9and the following descrip-
tions to become familiar with the basic con-
trols and components of the Model G1079R.
Understanding these items and how they work will
help you understand the rest of the manual and
stay safe when operating this machine.
G1079R
C
E. Depth-of-Cut Scale: Indicates distance
between conveyor table and sanding drums.
F. Conveyor Table w/Belt: Height-adjustable
table with conveyor belt that feeds workpieces
toward sanding drums.
Figure 8. G1079R front controls.
D
F
E
G. Rear Sanding Drum: Cylindrical drum with
machined surface that is covered in felt.
Typically wrapped with fine grit sandpaper to
perform finish sanding portion of operation.
H. Front Sanding Drum: Cylindrical drum with
machined surface. Typically wrapped with
coarse grit sandpaper to perform thickness
sanding portion of operation.
Figure 9. G1079R sanding drums.
G
H
D. Conveyor Height Crank Handle: Rotate to
raise or lower conveyor table according to
workpiece thickness.