Southbend TURN-NADO SB1046PF User manual

© August, 2011 by South Bend Lathe Co. Revised March, 2014 (ST). For Machines Mfg. Since 2/14
TURN-NADO®GEARHEAD
LATHE w/DRO
MODEL SB1046PF 21" X 60" MODEL SB1056F 18" X 40"
MODEL SB1047F 21" X 80" MODEL SB1057F 18" X 60"
MODEL SB1048PF 21" X 120" MODEL SB1058F 18" X 80"
OWNER'S MANUAL

Customer Service
We stand behind our machines. If you have any service questions, parts requests or general questions
about your purchase, feel free to contact us.
South Bend Lathe Co.
P.O. Box 2027
Bellingham, WA 98227
Phone: [phone]
Fax: [phone] (International)
Fax: [phone] (USA Only)
Email: [email protected]
Updates
For your convenience, any updates to this manual will be available to download free of charge
through our website at:
www.southbendlathe.com
Scope of Manual
This manual helps the reader understand the machine, how to prepare it for operation, how to control
it during operation, and how to keep it in good working condition. We assume the reader has a basic
understanding of how to operate this type of machine, but that the reader is not familiar with the
controls and adjustments of this specific model. As with all machinery of this nature, learning the
nuances of operation is a process that happens through training and experience. If you are not an
experienced operator of this type of machinery, read through this entire manual, then learn more
from an experienced operator, schooling, or research before attempting operations. Following this
advice will help you avoid serious personal injury and get the best results from your work.
Manual Feedback
We've made every effort to be accurate when documenting this machine. However, errors sometimes
happen or the machine design changes after the documentation process—so
the manual may not
exactly match your machine.
If a difference between the manual and machine leaves you in doubt,
contact our
customer service for clarification.
We highly value customer feedback on our manuals. If you have a moment, please share your
experience using this manual. What did you like about it? Is there anything you would change to
make it better? Did it meet your expectations for clarity, professionalism, and ease-of-use?
South Bend Lathe, Inc.
C
/O Technical Documentation Manager
P.O. Box 2027
Bellingham, WA 98227
Email: [email protected]

Table of Contents
INTRODUCTION....................................................3
About This Machine............................................. 3
Foreword............................................................. 3
Capabilities .........................................................3
Features..............................................................3
General Identification.......................................... 4
Controls & Components.......................................5
Master Power Switch........................................... 5
Headstock ...........................................................5
Control Panel ......................................................6
Carriage ..............................................................6
Carriage Feed Clutch Knob..................................7
Tailstock .............................................................7
Safety Foot Brake................................................ 8
SB1046PF, SB1047F, SB1048PF.......................... 9
Product Specifications ....................................... 13
SB1056F, SB1057F, SB1058F ............................ 13
SAFETY................................................................17
Understanding Risks of Machinery ..................17
Basic Machine Safety ........................................17
Additional Metal Lathe Safety.......................... 19
Additional Chuck Safety....................................20
PREPARATION....................................................21
Preparation Overview........................................ 21
Things You'll Need.............................................21
Power Supply Requirements............................. 22
Availability........................................................22
Full-Load Current Rating ..................................22
Circuit Requirements.........................................22
Grounding Requirements...................................23
Unpacking ..........................................................24
Inventory ............................................................24
Cleaning & Protecting ....................................... 25
Physical Environment........................................ 26
Electrical Installation ........................................26
Lighting ............................................................26
Weight Load ......................................................26
Space Allocation ................................................26
Lifting & Moving................................................ 27
Leveling & Mounting.........................................28
Leveling ............................................................28
Bolting to Concrete Floors.................................. 29
Assembly ............................................................29
Lubricating Lathe ..............................................30
Adding Coolant ..................................................30
Power Connection ..............................................30
Test Run .............................................................32
Spindle Break-In................................................35
Recommended Adjustments ..............................35
OPERATION ........................................................36
Operation Overview...........................................36
Chuck & Faceplate Mounting ........................... 37
Installation & Removal Devices........................ 37
Chuck Installation .............................................38
Registration Marks............................................39
Chuck Removal ..................................................39
Scroll Chuck Clamping......................................40
4-Jaw Chuck....................................................... 40
Mounting Workpiece.......................................... 40
Faceplate ............................................................41
Tailstock .............................................................42
Positioning Tailstock .........................................42
Using Quill........................................................42
Installing Tooling ..............................................43
Removing Tooling ..............................................44
Offsetting Tailstock ...........................................44
Aligning Tailstock to Spindle Centerline ............45
Centers ...............................................................46
Dead Centers..................................................... 46
Live Centers...................................................... 47
Mounting Dead Center in Spindle ......................47
Removing Center from Spindle...........................47
Mounting Center in Tailstock.............................47
Removing Center from Tailstock ........................ 48
Mounting Workpiece Between Centers ...............48
Steady Rest ........................................................49
Follow Rest.........................................................50
Carriage & Compound Rest Locks....................50
Compound Rest ..................................................50
Four-Way Tool Post ........................................... 51
Installing Tool ...................................................51
Aligning Cutting Tool with Spindle Centerline ...51
Micrometer Stop.................................................52
Manual Feed ......................................................53
Carriage Handwheel..........................................53
Cross Slide Handwheel ......................................53
Compound Rest Handwheel ...............................53
Spindle Speed.....................................................53
Determining Spindle Speed................................53
Setting Spindle Speed........................................54

16" South Bend Precision Toolroom Lathe
(Circa 1958)
Power Feed......................................................... 54
Power Feed Controls..........................................55
Setting Power Feed Rate.................................... 57
End Gears........................................................... 58
Standard End Gear Configuration...................... 58
Alternate End Gear Configuration .....................58
Threading Controls............................................59
Headstock & Gearbox Threading Controls..........59
Apron Controls ..................................................60
Thread Dial .......................................................61
Thread Dial Chart ............................................. 61
Chip Drawer....................................................... 63
Coolant System ..................................................63
Rod Support........................................................64
ACCESSORIES ...................................................65
MAINTENANCE ...................................................66
Maintenance Schedule....................................... 66
Cleaning & Protecting ....................................... 66
Maintenance Chart............................................ 67
Lubrication......................................................... 68
Headstock .........................................................68
Quick-Change Gearbox ......................................69
Apron ................................................................70
One-Shot Oiler .................................................. 71
Longitudinal Leadscrew..................................... 72
Ball Oilers .........................................................72
End Gears .........................................................73
Coolant System Service ..................................... 74
Hazards.............................................................74
Adding Fluid ..................................................... 75
Changing Coolant.............................................. 75
Machine Storage ................................................76
SERVICE..............................................................77
Backlash Adjustment ........................................77
Compound Rest .................................................77
Cross Slide ........................................................77
Leadscrew End Play Adjustment...................... 78
Gib Adjustment..................................................78
Half Nut Adjustment......................................... 80
V-Belts ................................................................80
Spindle Clutch Adjustment ............................... 81
Leadscrew Shear Pin Replacement ..................84
Gap Insert Removal & Installation ..................86
Gap Removal .....................................................86
Gap Installation ................................................ 87
TROUBLESHOOTING.........................................88
ELECTRICAL........................................................91
Electrical Safety Instructions ...........................91
Correcting Phase Polarity ................................. 92
Wiring Overview ................................................93
Component Location Index................................94
Electrical Cabinet Wiring.................................. 95
Spindle Motor.....................................................97
Coolant Pump..................................................... 97
Control Panel .....................................................98
Additional Components .....................................99
Power Supply Connection.................................. 99
PARTS ................................................................100
Headstock Housing ..........................................100
Headstock Gears ..............................................103
Gearbox ............................................................107
End Gears......................................................... 115
Motor & Headstock Oil System....................... 116
Saddle & Cross Slide .......................................118
Tool Post & Compound Rest............................ 121
Bed & Shafts ....................................................122
Stands & Panels
(SB1046PF-47PF, SB1056F-58F) ...................124
Stand & Panels (SB1048PF) ...........................126
Brake ................................................................128
Tailstock ...........................................................129
Thread Dial ......................................................130
Micrometer Stop...............................................130
Steady Rest ......................................................131
Follow Rest.......................................................131
Electrical Cabinet & Control Panel ................ 132
Accessories .......................................................133
Front Machine Labels...................................... 134
Rear Machine Labels ....................................... 135
WARRANTY .......................................................137

For Machines Mfg. Since 2/14 Turn-Nado®Gearhead Lathes
-3-
INTRODUCTION
About This Machine
Foreword
"The screw cutting engine lathe is the oldest and
most important of machine tools and from it all
other machine tools have been developed. It was
the lathe that made possible the building of the
steamboat, the locomotive, the electric motor, the
automobile and all kinds of machinery used in
industry. Without the lathe our great industrial
progress of the last century would have been
impossible." —How To Run a Lathe, 15th
Edition, South Bend Lathe.
The lathe represented in this manual is a
modern day version of the screw cutting lathes
that trace their roots back to the 1700's, which
were themselves technological improvements of
the bow lathe that can be traced back thousands
of years to the ancient Egyptians.
Now, almost 300 years later, these modern
"screw cutting" lathes are not just a piece of
refined machinery, but a culmination of human
ingenuity and knowledge embodied into the
design and synergy of thousands of interworking
parts—some of which represent the life's work
and dreams of many inventors, mechanical
engineers, and world-class machinists—including
the likes of Leonardo da Vinci, Henry Maudsley,
and the founders of South Bend Lathe, John and
Miles O'Brien.
And now the torch is passed to you—to take
the oldest and most important type of machine
tool—and carry on the tradition. As the operator
of a South Bend Lathe, you now join the ranks
of some very famous and important customers,
such as Henry Ford, who used the machines he
purchased to help him change the world.
Capabilities
These Turn-Nado®Gearhead Lathes are built
for daily use in a busy industrial setting.
Loaded with many nice features and high-
precision parts, these lathes excel at making fine
tools, dies, thread gauges, jigs, and precision
test gauges—however, they are by no means
delicate. Thick castings, heavy weight, and
quality construction throughout provide the
necessary brawn for demanding production and
manufacturing tasks.
Features
These 16-Speed Gearhead Lathes are packed
with standard features and equipment, such
as a complete coolant system, easy-to-clean
chip drawer, one-shot way lubrication system,
included steady and follow rests, chuck guard,
adjustable work lamp, foot brake, powered
cross feed, 3- and 4-jaw chucks, faceplate, and
premium Allen-Bradley contactors, thermal
relays, and fuse system.
Spindle speeds are controlled by convenient
headstock levers, which allow the operator to
quickly set the spindle speed within the available
range of 20–1600 RPM.
The beds of these lathes are constructed with
Meehanite castings that are hardened and
precision-ground in the traditional three V-way
prismatic design—long used on South Bend
Lathes for its accuracy, durability, and rigidity.
The headstocks feature quick-change gear levers
and the carriages include an adjustable clutch
that disables automatic carriage feed when it
contacts the included feed stop or in the event of
a crash.
These lathes
feature a spindle clutch that allows
the operator to switch between forward and reverse
without shutting down the motor—a great time saver
.
To further ensure a high degree of accuracy,
these lathes are equipped with high-quality
German spindle bearings and a Fagor 2-Axis
DRO. The spindles are D1-8 camlock with an
MT#7 taper and 3.15" bore. The tailstocks have
an MT#5 taper and 6.5" of quill travel.

-4-
For Machines Mfg. Since 2/14
Turn-Nado®Gearhead Lathes INTRODUCTION
General Identification
K. Tailstock w/MT#5 Quill
L. Rod Support (SB1047F, -48PF, -58F only)
M. Leadscrew
N. Feed Rod
O. Spindle Rod
P. Chip Drawer
Q . Safety Foot Brake
R. Carriage
S. Micrometer Stop
T. Headstock Spindle Lever
A. Quick-Change Gearbox Controls
B. Headstock Controls
C. D1-8 Camlock MT#7 Spindle
D. Chuck Guard w/Safety Switch
E. Follow Rest
F. 4-Way Tool Post
G. Halogen Work Lamp
H. Steady Rest
I. Coolant Nozzle & Valve
J. Fagor DRO Control Panel
Serious personal injury could occur if
you connect the machine to power before
completing the setup process. DO NOT
connect power until instructed to do so later
in this manual.
Untrained users have an increased risk
of seriously injuring themselves with this
machine. Do not operate this machine until
you have understood this entire manual and
received proper training.
Figure 1. General identification (Model SB1058F shown).
A
B
C
D
E
F
G
H
IK
J
L
M
N
O
P
Q
R
ST

For Machines Mfg. Since 2/14 Turn-Nado®Gearhead Lathes
-5-
INTRODUCTION
Refer to Figures 2–9 and the following
descriptions to become familiar with the features
and basic controls of this lathe. This knowledge
will be necessary to properly set up the lathe for
the test run and spindle break-in.
Controls &
Components
Master Power Switch
The rotary switch shown in Figure 2 toggles
incoming power ON and OFF to the lathe
controls. It also prevents the electrical cabinet
door from being opened when the switch is ON.
To reduce the risk of
serious injury when using
this machine, read and
understand this entire
manual before beginning any
lathe operations.
Turning the master power switch to OFF is not
a safe alternative to completely disconnecting
the machine from power when wiring,
servicing, or making repairs.
Headstock
A. Quick Change Gearbox Levers: Controls the
leadscrew and feed rod speed for threading
and feed operations.
B. Headstock Feed Direction Lever: Controls
the direction that the leadscrew and feed rod
rotate.
C. Gearbox Range Lever: Shifts the quick-
change gearbox into low range, neutral, or
high range.
D. Spindle Speed Lever: Selects one of the four
spindle speeds within the available range.
E. Spindle Speed Range Lever: Selects one of
four spindle speed ranges.
F. Threading and Feed Charts: Displays the
necessary configurations of the gearbox
levers and end gears for different threading
or feeding options.
Figure 2. Location of the master power switch.
Master Power
Switch
Figure 3. Headstock controls.
A
C
F
B
D
E

-6-
For Machines Mfg. Since 2/14
Turn-Nado®Gearhead Lathes INTRODUCTION
Control Panel
G. Power Light: Illuminates when lathe controls
are receiving power.
H. Coolant Pump OFF & ON Buttons: Control
the coolant pump motor.
I. Spindle Motor OFF & ON Buttons: Controls
the spindle motor.
J. STOP Button: Stops all machine functions.
Twist clockwise to reset.
Carriage
K. Carriage Handwheel: Moves the carriage
along the bed. Can be disengaged during
power feed operations to prevent an
entanglement hazard.
L. Cross Slide Handwheel: Moves the cross
slide toward and away from the workpiece.
M. Compound Rest Handwheel: Moves the tool
toward and away from the workpiece at the
preset angle of the compound rest.
N. 4-Way Tool Post: Mounts up to four cutting
tools at once that can be individually indexed
to the workpiece.
O. Coolant Flow Control Lever: Controls the
flow of coolant from the nozzle.
P. One-Shot Oiler: Draws oil from the apron
reservoir to lubricate the carriage ways
through various oil ports.
Q . Half Nut Lever: Engages/disengages the half
nut for threading operations.
R. Carriage Lock: Secures the carriage in place
when the carriage should not move.
S. Thread Dial and Chart: Dial indicates when
to engage the half nut during threading
operations. Chart indicates on which thread
dial reading to engage the half nut for
specific inch thread pitches.
T. Spindle Lever: Starts, stops and reverses
direction of spindle rotation.
U. Feed ON/OFF Lever: Engages/disengages
power feed.
V. Apron Feed Direction Knob: Changes
direction of carriage or the cross slide feed
without having to stop the lathe and move
the headstock feed direction lever.
W. Feed Selection Knob: Selects the carriage or
cross slide for power feed.
K
M
Figure 5. Carriage controls.
L
N
R
S
O
P
Q
U
V
W
T
Figure 4. Control panel.
G
H I J

For Machines Mfg. Since 2/14 Turn-Nado®Gearhead Lathes
-7-
INTRODUCTION
Carriage Feed Clutch Knob
X. Carriage Feed Clutch Knob: Adjusts how
easily the carriage clutch will disengage
automatic feeding when the carriage
contacts a feed stop or in the event of a
crash. Tightening this knob all the way
disables the carriage clutch completely.
Tailstock
Figure 6. Adjustable carriage feed clutch knob.
X
AB. Tailstock Handwheel: Moves the quill toward
or away from the spindle. The graduated
dial has 0.001" increments with one full
revolution equaling 0.200" of quill travel.
AC. Tailstock Gib Screws: Adjust the tapered gib
to control tailstock offset accuracy.
AD. Tailstock Offset Screws: Adjust the
tailstock offset left or right from the spindle
centerline.
Figure 7. Tailstock controls.
Y
ZAA AB
AC
AD
Y. Quill: The quill has an MT#5 taper, metric
and inch scale, and a drift slot to remove
tight-fitting tooling.
Z. Quill Lock Lever: Secures the quill in
position.
AA. Tailstock Lock Lever: Secures the tailstock in
position along the bedway.
AE. Tailstock Clamp Bolt: Adjusts the clamping
pressure applied by the tailstock lock lever.
AF. Offset Scale: Indicates the relative distance
of tailstock offset from the spindle centerline.
AG Offset Lock Bolt: Clamps together the upper
and lower halves of the tailstock after the
offset is adjusted.
AH. Tailstock Stop Pin: Prevents the tailstock
from sliding off of the ways.
Figure 8. Tailstock controls.
AE
AF
AG
AH

-8-
For Machines Mfg. Since 2/14
Turn-Nado®Gearhead Lathes INTRODUCTION
Safety Foot Brake
This lathe is equipped with a foot brake (see
Figure 9) to quickly stop the spindle instead of
allowing it to coast to a stop on its own.
Pressing the foot brake disengages the spindle
clutch from the motor drive train inside the
headstock.
After the foot brake is used, the spindle lever is
used to re-start spindle rotation.
Figure 9. Foot brake and spindle levers.
Foot Brake
Spindle Levers

For Machines Mfg. Since 2/14 Turn-Nado®Gearhead Lathes
-9-
INTRODUCTION
Model Number SB1046PF SB1047F SB1048PF
Product Dimensions
Weight 5830 lbs. 6640 lbs. 8140 lbs.
Width (side-to-side)/Depth
(front-to-back)/Height 110
1⁄2" x 27" x 54 3⁄4" 130 1⁄4" x 27" x 54 3⁄4" 169 3⁄4" x 27" x 54 3⁄4"
Foot Print (Width/Depth) 122
1⁄4" x 71 3⁄4" 141 3⁄4" x 71 3⁄4"182" x 71 3⁄4"
Shipping Dimensions
Type Wood Slat Crate
Weight 6182 lbs. 7440 lbs. 8712 lbs.
Width (side-to-side)/Depth
(front-to-back)/Height 121" x 45" x 69" 141" x 45" x 74" 183" x 45" x 69"
Electrical
Power Requirement 440V, 3-Phase, 60Hz
Full-Load Current Rating 19.23A
Minimum Circuit Size 30A
Switch Magnetic with Thermal Protection
Switch Voltage 440V
Plug Included No
Recommended Connection Type Hardwire to Locking Disconnect Switch
MODEL SB1046PF, SB1047F, SB1048PF
21" TURN-NADO®GEARHEAD LATHE w/DRO
P.O. Box 2027, Bellingham, WA 98227 U.S.A.
PHONE: [phone] • © South Bend Lathe Co.
www.southbendlathe.com
Product Specifications

-10-
For Machines Mfg. Since 2/14
Turn-Nado®Gearhead Lathes INTRODUCTION
Model Number SB1046PF SB1047F SB1048PF
Main Motor
Type TEFC Induction
Horsepower 15 HP
Voltage 440V
Phase 3-Phase
Amps 19A
Speed 1720 RPM
Cycle 60 Hz
Power Transfer V-Belt & Gear
Bearings Shielded & Permanently Sealed
Coolant Motor
Type TEFC Induction
Horsepower 1⁄8HP
Voltage 440V
Phase 3-Phase
Amps 0.23A
Speed 3450 RPM
Cycle 60 Hz
Power Transfer Direct Drive
Bearings Shielded & Permanently Sealed
Operation Information
Swing Over Bed 21 in.
Distance Between Centers 60 in. 80 in. 120 in.
Swing Over Cross Slide 14.01 in.
Swing Over Saddle 21 in.
Swing Over Gap 31.10 in.
Maximum Tool Bit Size 1 in.
Compound Travel 5.39 in.
Carriage Travel 59 in. 79 in. 119 in.
Cross Slide Travel 11 in.

For Machines Mfg. Since 2/14 Turn-Nado®Gearhead Lathes
-11-
INTRODUCTION
Model Number SB1046PF SB1047F SB1048PF
Headstock Information
Spindle Bore 3.15 in.
Spindle Taper MT#7
Number of Spindle Speeds 16
Range of Spindle Speeds 20–1600 RPM
Spindle Type D1-8 Camlock
Spindle Bearings Tapered Roller
Tailstock Information
Tailstock Quill Travel 6.5 in.
Tailstock Taper MT#5
Tailstock Barrel Diameter 3 in.
Threading Information
Number of Longitudinal Feeds 15
Range of Longitudinal Feeds 0.0015–0.0400 in./rev.
Number of Cross Feeds 15
Range of Cross Feeds 0.00075–0.0200 in./rev
Number of Inch Threads 38
Range of Inch Threads 2–72 TPI
Number of Metric Threads 40
Range of Metric Threads 0.4–14 mm
Number of Modular Pitches 18
Range of Modular Pitches 0.3–3.5 MP
Number of Diametral Pitches 21
Range of Diametral Pitches 8–44 DP
Dimensions
Bed Width 13.58 in.
Leadscrew Diameter 1
3⁄8in.
Leadscrew TPI 4 TPI
Leadscrew Length 85.39 in. 105 in. 145.43 in.
Steady Rest Capacity 5⁄8–7
1⁄16 in.
Follow Rest Capacity 5⁄8–5
1⁄8in.
Faceplate Size 14 in.
Floor to Center Height 46.65 in.
Height With Leveling Jacks 47.9 in.

-12-
For Machines Mfg. Since 2/14
Turn-Nado®Gearhead Lathes INTRODUCTION
Model Number SB1046PF SB1047F SB1048PF
Construction
Headstock Cast Iron
Headstock Gears Flame-Hardened Steel
Bed Meehanite Castings with Induction-Hardened Ways
Stand Cast Iron
Paint Urethane
Other
Country of Origin Taiwan (Some Components Made in USA & Germany)
Warranty 1 Year
Serial Number Location ID Label on Front of Headstock
Assembly Time Approximately 1 Hour
Sound Rating at Idle 76 dB

For Machines Mfg. Since 2/14 Turn-Nado®Gearhead Lathes
-13-
INTRODUCTION
Model Number SB1056F SB1057F SB1058F
Product Dimensions
Weight 4400 lbs. 5170 lbs. 5940 lbs.
Width (side-to-side)/Depth
(front-to-back)/Height 90
3⁄4" x 27" x 54 3⁄4" 110 1⁄2" x 27" x 54 3⁄4" 130 1⁄4" x 27" x 54 3⁄4"
Foot Print (Width/Depth) 102
1⁄2" x 71 3⁄4" 122 1⁄4" x 71 3⁄4" 141 3⁄4" x 71 3⁄4"
Shipping Dimensions
Type Wood Slat Crate
Weight 4708 lbs. 5522 lbs. 6380 lbs.
Width (side-to-side)/Depth
(front-to-back)/Height 100" x 45" x 69" 121" x 45" x 69" 141" x 45" x 69"
Electrical
Power Requirement 440V, 3-Phase, 60Hz
Full-Load Current Rating 19.23A
Minimum Circuit Size 30A
Switch Magnetic with Thermal Protection
Switch Voltage 440V
Plug Included No
Recommended Connection Type Hardwire to Locking Disconnect Switch
MODEL SB1056F, SB1057F, SB1058F
18" TURN-NADO®GEARHEAD LATHE w/DRO
P.O. Box 2027, Bellingham, WA 98227 U.S.A.
PHONE: [phone] • © South Bend Lathe Co.
www.southbendlathe.com
Product Specifications

-14-
For Machines Mfg. Since 2/14
Turn-Nado®Gearhead Lathes INTRODUCTION
Model Number SB1056F SB1057F SB1058F
Main Motor
Type TEFC Induction
Horsepower 15 HP
Voltage 440V
Phase 3-Phase
Amps 19A
Speed 1720 RPM
Cycle 60 Hz
Power Transfer V-Belt & Gear
Bearings Shielded & Permanently Sealed
Coolant Motor
Type TEFC Induction
Horsepower 1⁄8HP
Voltage 440V
Phase 3-Phase
Amps 0.23A
Speed 3450 RPM
Cycle 60 Hz
Power Transfer Direct Drive
Bearings Shielded & Permanently Sealed
Operation Information
Swing Over Bed 18.11 in.
Distance Between Centers 40 in. 60 in. 80 in.
Swing Over Cross Slide 11.02 in
Swing Over Saddle 18 in.
Swing Over Gap 27.95 in.
Maximum Tool Bit Size 1 in.
Compound Travel 5.39 in.
Carriage Travel 39 in. 59 in. 79 in.
Cross Slide Travel 11 in.

For Machines Mfg. Since 2/14 Turn-Nado®Gearhead Lathes
-15-
INTRODUCTION
Model Number SB1056F SB1057F SB1058F
Headstock Information
Spindle Bore 3.15 in.
Spindle Taper MT#7
Number of Spindle Speeds 16
Range of Spindle Speeds 20–1600 RPM
Spindle Type D1-8 Camlock
Spindle Bearings Tapered Roller
Tailstock Information
Tailstock Quill Travel 6.5 in.
Tailstock Taper MT#5
Tailstock Barrel Diameter 3 in.
Threading Information
Number of Longitudinal Feeds 15
Range of Longitudinal Feeds 0.0015–0.0400 in./rev.
Number of Cross Feeds 15
Range of Cross Feeds 0.00075–0.0200 in./rev
Number of Inch Threads 38
Range of Inch Threads 2–72 TPI
Number of Metric Threads 40
Range of Metric Threads 0.4–14 mm
Number of Modular Pitches 18
Range of Modular Pitches 0.3–3.5 MP
Number of Diametral Pitches 21
Range of Diametral Pitches 8–44 DP
Dimensions
Bed Width 13.58 in.
Leadscrew Diameter 1
3⁄8in.
Leadscrew TPI 4 TPI
Leadscrew Length 65.71 in. 85.39 in. 105.08 in.
Steady Rest Capacity 5⁄8–7
1⁄16 in.
Follow Rest Capacity 5⁄8–5
1⁄8in.
Faceplate Size 14 in.
Feed Rod Diameter 0.93 in
Floor to Center Height 45.08 in.
Height With Leveling Jacks 46.25 in

-16 -
For Machines Mfg. Since 2/14
Turn-Nado®Gearhead Lathes INTRODUCTION
Model Number SB1056F SB1057F SB1058F
Construction
Headstock Cast Iron
Headstock Gears Flame-Hardened Steel
Bed Meehanite Castings with Induction-Hardened Ways
Stand Cast Iron
Paint Urethane
Other
Country of Origin Taiwan (Some Components Made in USA & Germany)
Warranty 1 Year
Serial Number Location ID Label on Front of Headstock
Assembly Time Approximately 1 Hour
Sound Rating at Idle 76 dB

For Machines Mfg. Since 2/14 Turn-Nado®Gearhead Lathes
-17-
SAFETY
Understanding Risks of Machinery
Operating all machinery and machining equipment can be dangerous or relatively safe depending
on how it is installed and maintained, and the operator's experience, common sense, risk awareness,
working conditions, and use of personal protective equipment (safety glasses, respirators, etc.).
The owner of this machinery or equipment is ultimately responsible for its safe use. This
responsibility includes proper installation in a safe environment, personnel training and usage
authorization, regular inspection and maintenance, manual availability and comprehension,
application of safety devices, integrity of cutting tools or accessories, and the usage of approved
personal protective equipment by all operators and bystanders.
The manufacturer of this machinery or equipment will not be held liable for injury or property
damage from negligence, improper training, machine modifications, or misuse. Failure to read,
understand, and follow the manual and safety labels may result in serious personal injury, including
amputation, broken bones, electrocution, or death.
The signals used in this manual to identify hazard levels are as follows:
Death or catastrophic
harm WILL occur.
Moderate injury or fire
MAY occur.
Death or catastrophic
harm COULD occur.
Machine or property
damage may occur.
Basic Machine Safety
Owner’s Manual: All machinery and machining
equipment presents serious injury hazards
to untrained users. To reduce the risk of
injury, anyone who uses THIS item MUST
read and understand this entire manual
before starting.
Personal Protective Equipment: Operating or
servicing this item may expose the user
to flying debris, dust, smoke, dangerous
chemicals, or loud noises. These hazards
can result in eye injury, blindness, long-
term respiratory damage, poisoning,
cancer, reproductive harm or hearing loss.
Reduce your risks from these hazards
by wearing approved eye protection,
respirator, gloves, or hearing protection.
Trained/Supervised Operators Only: Untrained
users can seriously injure themselves
or bystanders. Only allow trained and
properly supervised personnel to operate
this item. Make sure safe operation
instructions are clearly understood. If
electrically powered, use padlocks and
master switches, and remove start switch
keys to prevent unauthorized use or
accidental starting.
Guards/Covers: Accidental contact with
moving parts during operation may cause
severe entanglement, impact, cutting,
or crushing injuries. Reduce this risk by
keeping any included guards/covers/doors
installed, fully functional, and positioned
for maximum protection.

-18-
For Machines Mfg. Since 2/14
Turn-Nado®Gearhead Lathes SAFETY
Entanglement: Loose clothing, gloves, neckties,
jewelry or long hair may get caught in
moving parts, causing entanglement,
amputation, crushing, or strangulation.
Reduce this risk by removing/securing
these items so they cannot contact moving
parts.
Mental Alertness: Operating this item with
reduced mental alertness increases the
risk of accidental injury. Do not let a
temporary influence or distraction lead to a
permanent disability! Never operate when
under the influence of drugs/alcohol, when
tired, or otherwise distracted.
Safe Environment: Operating electrically
powered equipment in a wet environment
may result in electrocution; operating near
highly flammable materials may result in a
fire or explosion. Only operate this item in
a dry location that is free from flammable
materials.
Electrical Connection: With electically powered
equipment, improper connections to the
power source may result in electrocution
or fire. Always adhere to all electrical
requirements and applicable codes when
connecting to the power source. Have all
work inspected by a qualified electrician to
minimize risk.
Disconnect Power: Adjusting or servicing
electrically powered equipment while it
is connected to the power source greatly
increases the risk of injury from accidental
startup. Always disconnect power
BEFORE any service or adjustments,
including changing blades or other tooling.
Secure Workpiece/Tooling: Loose workpieces,
cutting tools, or rotating spindles can
become dangerous projectiles if not
secured or if they hit another object during
operation. Reduce the risk of this hazard
by verifying that all fastening devices are
properly secured and items attached to
spindles have enough clearance to safely
rotate.
Chuck Keys or Adjusting Tools: Tools used to
adjust spindles, chucks, or any moving/
rotating parts will become dangerous
projectiles if left in place when the machine
is started. Reduce this risk by developing
the habit of always removing these tools
immediately after using them.
Work Area: Clutter and dark shadows increase
the risks of accidental injury. Only operate
this item in a clean, non-glaring, and well-
lighted work area.
Properly Functioning Equipment: Poorly
maintained, damaged, or malfunctioning
equipment has higher risks of causing
serious personal injury compared to
those that are properly maintained.
To reduce this risk, always maintain
this item to the highest standards and
promptly repair/service a damaged or
malfunctioning component. Always follow
the maintenance instructions included in
this documentation.
Unattended Operation: Electrically powered
equipment that is left unattended while
running cannot be controlled and is
dangerous to bystanders. Always turn the
power OFF before walking away.
Health Hazards: Certain cutting fluids and
lubricants, or dust/smoke created when
cutting, may contain chemicals known to
the State of California to cause cancer,
respiratory problems, birth defects,
or other reproductive harm. Minimize
exposure to these chemicals by wearing
approved personal protective equipment
and operating in a well ventilated area.
Difficult Operations: Attempting difficult
operations with which you are unfamiliar
increases the risk of injury. If you
experience difficulties performing the
intended operation, STOP! Seek an
alternative method to accomplish the
same task, ask a qualified expert how the
operation should be performed, or contact
our Technical Support for assistance.