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.
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 (see bottom of page) 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 Vertical Spindle Precision Milling Machine
(circa 1958)
Page 5
For Machines Mfg. Since 8 /09Model SB1027
INTRODUCTION
About This Machine
Foreword
"Most boys should learn a trade in order that
they may become skilled workmen. The trained
workman is always in demand...When a boy has
learned a trade, becomes a skilled mechanic,
he has excellent equipment with which to begin
life's battle, but he need not stop there. George
Westinghouse, the Wright Brothers, Henry Ford,
and the Studebaker Brothers were mechanics,
and it was their mechanical training that
made their success possible." —Machine Shop
Equipment, 2nd Ed., 1920, by the O'Brien
Brothers, founders of South Bend Lathe.
The first South Bend milling machine debuted in
the 1950's. During that time, the milling machine
and the already well-established South Bend
lathes created the foundation of many tool rooms
and school shops across America and beyond
her borders. Many young people in those days
came of age on South Bend equipment, becoming
world-class machinists, mechanical engineers,
inventors, and manufacturing visionaries.
A lot has changed in the world since then. Those
same school shops have mostly been replaced
by computer labs. The technology in the rotary
dial phone, television set, mechanical calculator,
computer, and camera of that decade could
barely fit into one large room together—now
they fit into a tiny box that is no bigger than a
box of breath mints. And the average production
machinist spends more time at a computer than
at a machine. Technology has been much refined
and the world operates on a much faster pace.
But some things haven't changed. The same
human ingenuity and passion that created the
best mechanical technology of today still exists
within us. The core machines of the modern shop,
like this South Bend milling machine, are still
fundamentally important.
Capabilities
This Milling Machine is built for daily, non-stop
use in a busy industrial setting, tool room, or
school shop. It is easy to set-up, truly accurate,
and built to give you long years of service when
properly cared for. This milling machine supports
workpieces up to 750 lbs. and is perfect for face
milling, end milling, planing, slot or keyway
cutting, dovetailing, routing, drilling, reaming,
and boring to name a few. With the movable ram
and tilting head, all these tasks can be performed
on horizontal, vertical, and angled surfaces.
When equipped with additional accessories, such
as a rotary table or dividing head, this milling
machine can do even more.
Features
This milling machine features 3-axis table
movement with built-in longitudinal power feed.
It is constructed with high-grade Meehanite
castings, and the saddle and knee ways are
Turcite coated and built with wide dovetails for
maximum support and accuracy through the full
range of movement.
To ensure quality work results, we have equipped
this mill with NSK or NTN spindle bearings that
are rated to P4 (ABEC-7) tolerances. The spindle
taper is R8 and the spindle has powered down
feed with fine, medium, and coarse feed controls.
The headstock is mounted on a wide-dovetail
movable ram with 13" of travel on the column
and 360° rotating capability. The headstock itself
can swivel 90° left/right or 45° forward/back so it
can be positioned for nearly any setup needed.
To reduce the time spent doing daily lubrication,
we have outfitted this milling machine with a
one-shot lubrication system that is as quick and
easy as one pump of a lever.
When you think about it, the greatest mechanical
technology of the future will be what we create
today. As the owner of a South Bend milling
machine, you are now part of a great legacy.
What will you create with yours?
Quality Allen-Bradley electrical components and
attention to detail provide dependable electrical
control of the powered movements.
And finally, this milling machine comes with a
circulating coolant system with the pump and
reservoir in the column base.
-3-
Page 6
Model SB1027
INTRODUCTION
Full View Identification
For Machines Mfg. Since 8 /09
Drive System & Headstock
(See Page 5
for Identification)
Lifting Eye Bolt
Coolant Nozzle
& Valve
Work Table
X-Axis Ball Handle
Control Panel
(See Page 5
for Identification)
Electrical
Cabinet
Power Feed
Limit Switch
X-Axis
Power Feed
Coolant Return
-4-
Hose
One-Shot
Y-Axis Ball Handle
Knee
Z-Axis Crank
Oiler
Splash Pan
Figure 1. SB1027 full view identification.
Page 7
For Machines Mfg. Since 8 /09Model SB1027
INTRODUCTION
Drive System, Headstock, & Control Panel
Identification
Motor
Spindle Brake
& Switch
Manual/Power
Downfeed
Selector
Quill Depth
Downfeed
Rate Selector
Downfeed
Direction Pin
Fine Downfeed
Handwheel
Downfeed Clutch Lever
Adjustable Downfeed Stop
Belt Housing
Stop
Quill
Belt Tension
Adjustment
Lever
Spindle Speed
Display
Emergency
STOP Button
Spindle Speed
Range Selector
ON Button
Coolant Switch
Spindle Direction Switch
Spindle Speed Dial
Coarse Downfeed Lever
Quill Lock Lever
Dial Indicator
Rod
Spindle
Figure 2. SB1027 drive system and headstock identification.
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.
Length/Width/Height ................................................................................................................................... 57" x 71" x 87
1
⁄2"
Foot Print (Length/Width) .........................................................................................................................................36" x 24"
Shipping Dimensions:
Type ........................................................................................................................................................................ Wood Crate
Length/Width/Height ....................................................................................................................................... 58" x 54" x 73"
Electrical:
Required Power Source ................................................................................................................ 220V, Single-Phase, 60 Hz
Switch ....................................................................................................... Magnetic Switch w/Thermal Overload Protection
Switch Voltage .................................................................................................................................................................. 220V
Recommended Power Cord .........................................................................................................14 Gauge, 3 Wire, 300 VAC
Plug Included ........................................................................................................................................................................ No
Type ...................................................................................................................................................... AEVF Induction
Horsepower .............................................................................................................................................................. 3 HP
Voltage ..................................................................................................................................................................... 220V
Number Of Speeds .........................................................................................................................................................1
Power Transfer ............................................................................................................................................... Belt Drive
Bearings ............................................................................................................... Lubricated and Permanently Sealed
Type ..............................................................................................................................................TE Induction Class F
Voltage ..................................................................................................................................................................... 220V
Number Of Speeds .........................................................................................................................................................1
Power Transfer ............................................................................................................................................ Direct Drive
Bearings ............................................................................................................... Lubricated and Permanently Sealed
Head Tilt..................................................................................................................................... 45° Forward, 45° Back
Head Swivel.......................................................................................................................................90° Right, 90° Left
Distance Range Spindle to Column ..................................................................................................................... 6"–19 "
Distance Range Spindle to Table .........................................................................................................................0"–18 "
Drilling Capacity for Cast Iron ................................................................................................................................... 1"
Drilling Capacity for Steel ........................................................................................................................................3⁄4"
Number of Spindle Speeds ............................................................................................................................... Variable
Range of Spindle Speeds ......................................................................................................................... 60–5000 RPM
Number of Longitudinal Feed Rates ............................................................................................................... Variable
Longitudinal Feed Rate Range .................................................................................................................... 0–3
Number of Quill Auto-Feed Rates ................................................................................................................................3
Length/Width/Thickness............................................................................................................................. 48" x 9" x 3"
Number of T-Slots ..........................................................................................................................................................3
End Milling Capacity ................................................................................................................................................... 1"
Face Milling Capacity .................................................................................................................................................. 4"
Draw Bar Diameter/TPI ........................................................................................................................................
1
⁄2"-20
Draw Bar Length .................................................................................................................................................... 18
Table ............................................................................................................. Hardened & Precision-Ground Cast Iron
Headstock ...................................................................................................................................... Meehanite Cast Iron
Column & Base ............................................................................................................................. Meehanite Cast Iron
Knee & Saddle............................................................................................................................... Meehanite Cast Iron
Machine No-Load Sound Level @ 5000 RPM ................................................................................................................ 54 dB
Country of Origin ......................................................................................................................................................... Taiwan
Warranty .........................................................................................................................................................................1 Year
Serial Number Location .......................................................................................Machine ID Label On Column Right Side
Customer Setup & Cleaning Time ......................................................................................................................... 1–2 Hours
Features
High-Quality, Low-Vibration AEVF Spindle Motor
P4 (ABEC-7) High-Quality Angular Contact Spindle Bearings
Powered Recycling Coolant System
X & Y Leadscrew Nuts Double-Bronzed for Ultra-Smooth Movement w/Minimal Backlash
Lever-Action, One-Shot Pump Lubrication System
Auto-Downfeed Stop with Micro-Adjustable Stop
Variable Speed Longitudinal Power Feed
Hardened and Precision-Ground Table Surface
Chromed Steel Quill
Heavy-Duty Spindle Brake
INTRODUCTION
For Machines Mfg. Since 8 /09
-8-
Page 11
For Machines Mfg. Since 8 /09Model SB1027
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 defined 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.
1. 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.
2. 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, longterm 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.
3. 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.
4. 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.
SAFETY
Understanding Risks of Machinery
Basic Machine Safety
-9-
Page 12
Model SB1027
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.
10. 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.
11. 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.
12. Work Area:
Clutter and dark shadows
increase the risks of accidental injury.
Only operate this item in a clean, nonglaring, and well-lighted work area.
13. 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.
14. 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.
15. Cancer or Respiratory Hazards: Certain
cutting fluids and lubricants, or dust/
smoke created when cutting, may
contain chemicals known 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.
16. 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.
SAFETY
For Machines Mfg. Since 8 /09
-10-
Page 13
For Machines Mfg. Since 8 /09Model SB1027
SAFETY
Additional Milling Machine Safety
1. Understanding Controls:
complex machine that presents severe
cutting or amputation hazards if used
incorrectly. Make sure you understand the
use and operation of all controls before you
begin milling.
2. Safety Accessories:
from the cutting operation can cause eye
injury or blindness.
in addition to your safety glasses or use a
face shield when milling.
3. Work Holding:
not properly clamped to the table could cause
the workpiece to fly into the operator with
deadly force! Before starting the machine,
be certain the workpiece has been properly
clamped to the table. NEVER hold the
workpiece by hand during operation.
4. Spindle Speed:
breakage that could send flying debris at
the operator and bystanders, use the correct
spindle speed for the operation. Allow the
mill to gain full speed before beginning the
cut.
5. Spindle Direction Change:
rotation direction while it is spinning could
lead to impact injury from broken tool or
workpiece debris, and workpiece or machine
damage. ALWAYS make sure the spindle is
at a complete stop before changing spindle
direction.
Milling a workpiece that is
To avoid tool or workpiece
The mill is a
Flying chips or debris
Always use a chip guard
Changing spindle
6. Stopping Spindle:To reduce the risk of hand
injuries or entanglement hazards, DO NOT
attempt to stop the spindle with your hand
or a tool. Allow the spindle to stop on its own
or use the spindle brake.
7. Chip Cleanup:
sharp and hot and can cause burns or cuts.
Using compressed air to clear chips could
cause them to fly into your eyes, and may
drive them deep into the working parts of
the machine. Use a brush or vacuum to clear
away chips and debris from the machine or
workpiece and NEVER clear chips while the
spindle is turning.
8. Machine Care & Maintenance:
the mill with excessively worn or damaged
machine parts increases the risk of machine
or workpiece breakage, which could eject
hazardous debris at the operator. Operating
a mill in poor condition will also reduce
the quality of the results. To reduce this
risk, maintain the mill in proper working
condition by ALWAYS promptly performing
routine inspections and maintenance.
9. Cutting Tool Usage:
sharp leading edges—handle them with care!
Using cutting tools that are in good condition
helps to ensure quality milling results and
reduces the risk of personal injury from
broken tool debris. Inspect cutting tools for
sharpness, chips, or cracks before each use,
and ALWAYS make sure the cutting tools
are firmly held in place before starting the
machine.
Chips from the operation are
Operating
Cutting tools have very
-11-
Page 14
Model SB1027
PREPARATION
For Machines Mfg. Since 8 /09
Preparation OverviewThings You'll Need
The purpose of the preparation section is to help
you prepare your machine for operation.
The typical preparation process is as follows:
1. Unpack the machine and inventory the
contents of the box/crate.
2. Clean the machine and its components.
3. Identify an acceptable location for the
machine and move it to that location.
4. Level the machine and either bolt it to the
floor or place it on mounts.
5. Assemble the loose components and make
any necessary adjustments or inspections to
ensure the machine is ready for operation.
6. Connect the machine to the power source.
7. Test run the machine to make sure it
functions properly and is ready for operation.
During the setup process, operation, and
maintenance of your machine, you'll need the
following items:
For Lifting
•Aforkliftorotherpowerliftingdevicerated
for the weight of the machine
•Two sifting straps rated for at least 3000 lbs.
each (refer to Page 16 for details)
For Power Connection
•Aqualifiedelectriciantoensureasafeand
code-compliant connection to the power
source (refer to Page 20 for details)
For Assembly
•Cotton rags
•Mineral spirits
•Safetyglasses
•Oil can with any general machine oil
•Grease gun with any API GL 2 grease
•Stiff grease brush
•Phillips dcrewdriver #2
•Floormounting hardware as needed
•Hex wrench 5mm
•Hex wrench 6mm
•Combo wrench
1
⁄2" or ratchet and 1⁄2" socket
-12-
Page 15
For Machines Mfg. Since 8 /09Model SB1027
This item was carefully packaged to prevent
damage during transport. If you discover any
damage, please immediately call Customer
Service at (360) 734-1540 for advice. You may
need to file a freight claim, so save the containers
and all packing materials for possible inspection
by the carrier or its agent.
PREPARATION
Unpacking
Inventory
After all of the parts, other than the mill, have
been removed from the shipping crate, you
should have the following inventory.
Description (Figure 3) Qty
A. Front Way Cover ............................................1
B. Rear Way Cover .............................................1
C. Fine Downfeed Handwheel............................1
D. Drawbar
E. Ball Handles (Left Y-Axis, X-Axis) ...............2
F. Ball Handle (Power Feed) .............................. 1
G. Ball Handle Handles ...................................... 3
H. Oil Bottle ........................................................ 1
I. Tool Box .......................................................... 1
J. Combo Closed-End Wrench 19/21mm ........... 1
K. Combo Open-End Wrench 12/14mm ............. 1
L. Coarse Downfeed Lever ................................. 1
M. Z-Axis Crank ..................................................1
N. Hex Wrench 10 Pc. Set 1.5–10mm ................ 1
O. Screwdrivers Slotted #2, Phillips #2 ....1 Each
P. Splash Pan ...................................................... 1
R. Coolant Return Hoses w/Clamps ..................2
7
⁄16"-20 x 18 1⁄2" .................................. 1
A
D
E
N
C
G
F
H
M
K
O
P
R
Figure 3. Shipping inventory.
B
I
L
J
Q
-13 -
Page 16
Model SB1027
The unpainted surfaces are coated at the factory
with a heavy-duty rust preventative that
prevents corrosion during shipment and storage.
The benefit of this rust preventative is that it
works very well. The downside is that it can be
time-consuming to thoroughly remove.
Be patient and do a careful job when cleaning
and removing the rust preventative. The time
you spend doing this will reward you with
smooth-sliding parts and a better appreciation
for the proper care of the unpainted surfaces.
Although there are many ways to successfully
remove the rust preventative, we have cleaned
thousands of machines and found the following
process to be the best balance between efficiency
and minimized exposure to toxic fumes or
chemicals.
Before cleaning, gather the following:
•Disposablerags
•Cleaner/degreaser (certain citrus-based
degreasers work extremely well and they
have non-toxic fumes)
•Safetyglasses&disposablegloves
Note: Automotive degreasers, mineral spirits, or
WD•40canbeusedtoremoverustpreventative.
Before using these products, though, test them
on an inconspicuous area of a painted area to
make sure they will not damage it.
with a liberal amount of your cleaner or
degreaser and let them soak for a few
minutes.
3. Wipe off the surfaces. If your cleaner or
degreaser is effective, the rust preventative
will wipe off easily.
Note: To clean off thick coats of rust preventative
on flat surfaces, such as beds or tables, use
aPLASTICpaintscrapertoscrapeoffthe
majority of the coating before wiping it off
withyourrag.(Donotuseametalscraperor
it may scratch the surface.)
4. Repeat Steps 2–3 as necessary until clean,
then coat all unpainted surfaces with a
quality metal protectant or light oil to
prevent rust.
GAS
Gasoline and petroleum
products have low flash
points and can explode
or cause fire if used for
cleaning. Avoid using these
products to remove rust
preventative.
Many cleaning solvents are
toxic if inhaled. Minimize
your risk by only using
these products in a well
ventilated area.
Avoid chlorine-based solvents, such as
acetone or brake parts cleaner that may
damage painted surfaces. Always follow the
manufacturer’s instructions when using any
type of cleaning product.
PREPARATION
Cleaning & Protecting
For Machines Mfg. Since 8 /09
-14-
Page 17
For Machines Mfg. Since 8 /09Model SB1027
= Power connection
63"
36"
24"
38"
831⁄2"
23"
30"
Wall
Wall
30"
Weight Load
Refer to the Machine Specifications for the
weight of your machine. Make sure that the
surface upon which the machine is placed will
bear the weight of the machine, additional
equipment that may be installed on the machine,
and the heaviest workpiece that will be used.
Additionally, consider the weight of the operator
and any dynamic loading that may occur when
operating the machine.
Space Allocation
Consider the largest size of workpiece that will
be processed through this machine and provide
enough space around the machine for adequate
operator material handling or the installation
of auxiliary equipment. With permanent
installations, leave enough space around
the machine to open or remove doors/covers
as required by the maintenance and service
described in this manual.
Physical Environment
The physical environment where your machine
is operated is important for safe operation and
longevity of parts. For best results, operate this
machine in a dry environment that is free from
excessive moisture, hazardous or flammable
chemicals, airborne abrasives, or extreme
conditions. Extreme conditions for this type
of machinery are generally those where the
ambient temperature is outside the range of 41°–
104°F; the relative humidity is outside the range
of 20–95% (non-condensing); or the environment
is subject to vibration, shocks, or bumps.
Electrical Installation
Place this machine near an existing power
source. Make sure all power cords are protected
from traffic, material handling, moisture,
chemicals, or other hazards. Make sure to leave
access to a means of disconnecting the power
source or engaging a lockout/tagout device.
Lighting
Lighting around the machine must be adequate
enough that operations can be performed
safely. Shadows, glare, or strobe effects that
may distract or impede the operator must be
eliminated.
Children or untrained
people may be seriously
injured by this machine.
Only install in an access
restricted location.
PREPARATION
Location
Figure 4. Clearances.
-15 -
Page 18
Model SB1027
Lifting & Moving
PREPARATION
2. Place the lifting web straps under the ram
and connect them to the safety hook, as
illustrated in Figure 5.
For Machines Mfg. Since 8 /09
This machine and its
parts are heavy! Serious
personal injury may occur
if safe moving methods are
not used. To reduce the
risk of a lifting or dropping
injury, ask others for help
and use power equipment.
The method of lifting and moving the mill
described below requires at least two other
people for assistance, and a forklift with two
lifting web straps rated for at least 3000 lbs.
each.
Important: Before lifting the mill, make sure the
four turret lock bolts (two on either side of the
ram) are torqued to 47 ft/lbs.
To lift and move the mill:
1. Swing the ram around 180° from the position
that it was shipped in, then rotate the
head upright, as illustrated in Figure 5
(refer to Ram Movement on Page 33 and
Headstock Movement on Page 29 for
detailed instructions).
Note: After re-positioning the ram and
headstock, make sure they are locked in
place to prevent unexpected movement
during lifting and moving.
Note: Place padding between the straps and the
mill to protect the ram and ways, and to
keep from cutting the lifting straps.
Lifting
Web Straps
Turret
Lock Bolts
Figure 5. Lifting the mill using web straps.
3. Unbolt the mill from the shipping pallet.
4. With your assistants steadying the load to
keep it from swaying, lift the mill a couple of
inches.
— If the mill tips to one side, lower it to the
ground and adjust the ram or table to
balance the load. Make sure to re-tighten
the lock levers and bolts before lifting the
mill again.
— If the mill lifts evenly, continue to move it
to its permanent location.
-16 -
Page 19
For Machines Mfg. Since 8 /09Model SB1027
Leveling machinery helps precision components,
such as bed ways, remain straight and flat
during the lifespan of the machine. Components
on an unleveled machine may slowly twist due to
the dynamic loads placed on the machine during
operation.
To level a machine, place metal shims under
the contact points where the machine rests on
the floor. For best results, use a precision level
that is at least 12" long and sensitive enough to
show a distinct movement when a 0.003" shim
(approximately the thickness of one sheet of
standard newspaper) is placed under one end of
the level. See the figure below for an example of a
high precision level.
We strongly recommend securing your
machine to the floor if it is hardwired to the
power source. Consult with your electrician to
ensure compliance with local codes.
Although not required, we recommend that
you level your machine and mount it to the
floor. Because this is an optional step and floor
materials may vary, mounting hardware is not
included. Generally, you can either bolt your
machine to the floor or mount it on machine
mounts.
PREPARATION
Leveling & Mounting
Leveling
Bolting to Concrete Floors
Anchor
Bolt
Lag Bolt
and Anchor
Figure 7. Common types of fasteners for bolting
machinery to concrete floors.
Figure 6. Example of a precision level.
-17-
Page 20
Model SB1027
Assembly
PREPARATION
5. Remove the hex nut from the Y-axis
leadscrew.
For Machines Mfg. Since 8 /09
Ball Handles
The ball handles for the X-axis leadscrew have
spring-loaded, keyed center bushings, as shown
in Figure 8. This allows them to disengage
from the leadscrew when using the power feed,
avoiding an entanglement hazard.
Ball Handle
Handle
Spring-Loaded
Bushing
Y-Axis
Ball Handle
Figure 8. Ball handle assemblies.
6. Align the keyway of the ball handle with
leadscrew key, slide the Y-axis ball handle
(see Figure 8) onto the leadscrew, then
secure it in place with the removed hex nut.
7. Thread the handles into the small end of
the ball handles and tighten them with a
wrench.
Z-Axis Crank
Slide the knee crank onto the shaft so that the
teeth of the crank and shaft engage, as shown in
Figure 9.
To install the ball handles:
1. Remove the hex nuts from each end of the
X-axis leadscrew.
2. Identify the two ball handles with the
spring-loaded center bushings (see
Figure 8).
3. For each ball handle, position it so that the
protruding part of the center bushing is
facing toward the table, align the keyway
with the leadscrew key, then slide it onto the
X-axis leadscrew.
4. Secure the ball handles with the hex nuts
removed in Step 1.
Note: Tighten the hex nuts just until they are
snug. Overtightening could increase the
wear of the moving parts.
Z-Axis Crank
Teeth Engaged
Figure 9. Z-axis crank installed.
-18 -
Page 21
For Machines Mfg. Since 8 /09Model SB1027
PREPARATION
Way Covers
1. Remove the five button-head cap screws
shown in Figure 10 from the front of the
saddle and knee, position the pleated way
cover in place, then secure it with the
removed cap screws.
Cap Screws
Figure 10. Front way cover installed.
2. Remove the four button-head cap screws
shown in Figure 11 from the column and
the rear of the table, position the rear
way cover in place, then secure it with the
removed cap screws.
Splash Pan & Coolant Return
Hoses
1. Remove the three cap screws shown in
Figure 12 from the base rim, slide the
splash pan into position, then secure it with
the removed cap screws.
Coolant
Return Hoses
Cap
Screw
Screw
Cap
Screw
Figure 12. Splash pan and coolant return hoses
installed.
2. Use Teflon tape or pipe sealant on the
threads of the pipe elbows, then install them
into the coolant drain holes located on both
ends of the table, as shown in Figure 13.
Splash Pan
Cap
Cap
Screws
Figure 11. Rear way cover installed.
Pipe
Elbows
Coolant
Return Screen
Figure 13. Coolant return hose connections.
3. Loosen the hose clamps on the end of the
coolant return hoses, push the hoses onto the
pipe elbows, then re-tighten the clamps.
4. Tug the hoses to make sure they are firmly
attached to the pipe elbow. If they are loose,
repeat Step 3.
-19 -
Page 22
Model SB1027
5. Loosen the hose clamp screws above the
coolant return screens in the base (see
Figure 13 on the previous page), insert the
hoses so that they will drain into the screens,
then re-tighten the clamp screws to secure
them in place.
6. Install the coarse downfeed lever and the
fine downfeed handwheel, as shown in
Figure 14.
Note: Make sure the pins on the back of
these devices are fully seated in the hubs
before use.
PREPARATION
For Machines Mfg. Since 8 /09
Power Connection
Electrocution or fire
may occur if machine is
ungrounded, incorrectly
connected to power, or
connected to an undersized
circuit. Use a qualified
electrician to ensure a safe
power connection.
Once the machine is set up and assembled as
previously described in this manual, it is ready to
be connected to the power source.
Fine
Downfeed
Handwheel
Coarse
Downfeed
Lever
Figure 14. Coarse downfeed lever and fine downfeed
handwheel installed.
Initial Lubrication
The machine was lubricated at the factory, but
we strongly recommend that you inspect all
lubrication points yourself and provide additional
lubrication if necessary. Refer to Lubrication on
Page 43 for specific details.
Note About Required Power Source: The milling
machine is equipped with a Yaskawa phase
inverter that changes single-phase power into
3-phase which is used by the spindle motor.
Note About Extension Cords: Using an
incorrectly sized extension cord may decrease the
life of electrical components on the machine.
Required Power Source ...........220V, Single-Phase
Full Load Amp Draw ............................ 8.95 Amps
Required Voltage Range ................................ 220V
Frequency ...................................................... 60 Hz
Maximum Extension Cord Length ................ 50 ft.
To connect the mill to power:
1. Make sure the incoming power source and
the power cord meet the requirements above.
-20-
2. Use the correct size strain relief when you
feed the power cord through the bottom of
the electrical cabinet.
3. Connect the power cord to the terminals as
illustrated in the Electrical Box Wiring Diagram on Page 58.
Page 23
For Machines Mfg. Since 8 /09Model SB1027
PREPARATION
Test Run
Operating the coolant pump of this mill
without the correct amount of coolant in
Pulling the power plug
from the receptacle while
the mill is running could
damage the inverter
inside the electrical box
or other electrical parts.
Always use the emergency
STOP button or the circuit
breaker to turn the mill
OFF before pulling the
plug.
the reservoir could damage it and void the
warranty. ALWAYS make sure there is the
correct amount of coolant in the reservoir
before using the pump.
2. Clean out the coolant reservoir in the base of
the mill, then fill it with coolant (refer to the
Coolant System section on Pages 48–49
for specific details).
3. Clear away all tools and objects used during
assembly and preparation.
After all preparation steps have been completed,
the machine and its safety features must be
tested to ensure correct operation.
If you discover a problem with the operation
of the machine or its safety components, do
not operate it further until you have resolved
the problem. Refer to the Troubleshooting
section on Page 54 for solutions to common
problems that may occur with all mills. If you
need additional help, contact our Tech Support at
(360) 734-1540.
During the test run, you will verify the proper
operation of the following:
•Spindlemotor
•EmergencySTOPbutton
•Electricalcabinetsafetyswitch
•Spindlebrake
•Coolantpump
•X-axispowerfeed
4. Rotate the spindle speed dial on the control
panel counterclockwise to the lowest setting,
the spindle direction switch to the STOP
(middle) position, and the coolant switch to
the OFF (left) position (see Figure 15). This
will disable these functions for now when the
power initially flows to the control panel in
the next steps.
Spindle
Spindle
Speed Dial
Speed
Display
Spindle
Direction
Switch
Emergency
STOP
Button
To test run the machine:
1. Read and follow the safety instructions at
the beginning of the manual, take required
safety precautions, and make sure the
machine is set up and adjusted properly.
Coolant
Switch
Figure 15. Control panel.
ON
Button
-21-
Page 24
Model SB1027
PREPARATION
For Machines Mfg. Since 8 /09
5. Set the spindle speed to the low range (refer
to the Setting Spindle Speed Range
section beginning on Page 34 for detailed
instructions).
6. Move the downfeed selector to the manual
(forward) position so that the spindle does
not feed into the table during this test (refer
to the Downfeed Operations section on
Page 35 for detailed instructions).
7. Make sure the electrical cabinet door is
latched shut, then rotate the main power
switch to the ON position so that power
flows to the control panel (see Figure 16).
Main Power Switch
10. Listen for abnormal noises and watch for
unexpected actions from the mill. The
machine should run smoothly and without
excessive vibration or rubbing noises.
— Strange or unusual noises or actions
must be investigated immediately. Press
the emergency STOP button to turn the
machine OFF and disconnect it from
the power source before investigating or
correcting potential problems.
11. Press the emergency STOP button to turn
the machine OFF, then wait for the spindle
to stop on its own.
12. WITHOUT resetting the emergency STOP
button, press the ON button. The machine
should not start.
— If the machine does not start, the
emergency STOP button safety feature is
working correctly.
Figure 16. Location of the main power switch on the
electrical box door.
8. Push the emergency STOP button in, then
twist it clockwise until it pops out. When
the switch pops out, the mill is ready for
operation.
9. Press the ON button to enable power to flow
through the control panel to the spindle
motor, then turn the spindle direction
switch to the forward (right) position to start
spindle motor.
— If the machine does start (with the
emergency STOP button pushed in),
immediately disconnect power to the
machine. The emergency STOP button
safety feature is not working correctly.
This safety feature must work properly
before proceeding with regular operations.
Call Tech Support for help.
13. Reset the emergency STOP button, turn the
main power switch on the electrical cabinet
door to the OFF position, then press the ON
button. Again, the machine should not start.
— If the machine does not start, the main
power switch safety feature is working
correctly.
— If the machine does start (with the main
power switch turned to the OFF position),
immediately disconnect power to the
machine. The main power switch safety
feature is not working correctly. This
safety feature must work properly before
proceeding with regular operations. Call
Tech Support for help.
-22-
Page 25
For Machines Mfg. Since 8 /09Model SB1027
PREPARATION
14. Turn the spindle direction switch to the stop
(middle) position to prevent the spindle from
starting when you next use the ON button.
15. Make sure the emergency STOP button has
been reset, press the ON button, then start
spindle rotation.
16. Push the spindle brake lever—the spindle
motor should turn OFF and the spindle
should come to a stop from the pressure of
the brake.
17. Position the coolant nozzle over the table,
turn the coolant switch on the control panel
to the on (right) position to start the coolant
pump, then open the valve at the base of the
nozzle to begin the flow of coolant.
18. Check for leaks from the hose fittings and
that the coolant is properly draining back
into the reservoir through the screen on the
base.
The mill comes with a power feed unit for X-axis
table travel. Proper operation of the limit switch
attached to the front middle of the table is
critical for the safe use of this power feed unit.
If the power feed does not operate as expected
during the following steps, disconnect it
from power and contact our Tech Support at
(360) 734-1540 for assistance.
To test the X-axis power feed unit and table
limit switch:
1. Make sure all tools, cables, and other items
are well clear of table movement as you
follow these steps.
2. Refer to the Table Movement section,
beginning on Page 27, to understand how
the power feed, table locks, and limit switch
function.
3. Loosen the table locks on the front of the
table.
4. Plug the power feed power cord into a 110V
power outlet.
Note: There are available 110V outlets on the
right side of the electrical cabinet that can
be used for the power feed or other 110V
devices.
5. Make sure the power feed directional lever
is in the neutral (middle) position, turn the
speed dial counterclockwise to the lowest
setting, then flip the power switch to the on
(up) position.
6. Turn the directional lever to the left, slowly
turn the speed dial clockwise to increase the
speed, then confirm that the table is moving
to the left.
7. Watch for the table limit stop to hit the
limit switch and turn the power feed OFF,
stopping the table movement.
8. Turn the directional lever through the
neutral (middle) position and all the way to
the right. The table should begin moving to
the right.
9. Confirm that the table stops moving when
the limit stop presses against the limit
switch plunger.
10. Move the directional lever to the neutral
(middle) position and flip the power switch to
the off (down) position.
Congratulations! The Test Run of the mill is
complete. Continue onto the next page to perform
the Spindle Break-In and Inspections & Adjustments procedures.
-23-
Page 26
Model SB1027
PREPARATION
Spindle Break-In
Complete the spindle bearing break-in
procedure to avoid rapid deterioration of
spindle components when the mill is placed
into operation.
The high-quality bearings and gears used in the
mill are manufactured to very close tolerances.
However, this does not guarantee perfect
dimensional mating of the bearing components or
exact meshing of gear teeth. Before operational
stress is placed on these and other moving parts
in the mill, complete this break-in procedure to
conform these components to one another and
ensure trouble-free performance from the mill.
To perform the spindle break-in procedure:
1. Successfully perform all the steps in the
Test Run section beginning on Page 21.
2. Make sure the spindle is at a complete stop.
3. Set the spindle speed to the low range (refer
to Setting Spindle Speed beginning on
Page 34 for detailed instructions).
For Machines Mfg. Since 8 /09
Since the mill head was rotated parallel to
the table for shipping purposes, you will need
to tram the spindle with the table if your first
cut requires a 90° alignment. Refer to the
Tramming Spindle section on Page 30 for
detailed instructions.
Inspections &
Adjustments
The following list of adjustments were performed
at the factory before the machine was shipped:
Be aware that machine components can shift
during the shipping process. Pay careful
attention to these adjustments during operation
of the machine. If you find that the adjustments
are not set according to the procedures in this
manual or your personal preferences, re-adjust
them.
4. Start the spindle rotation at a medium speed
and let the mill run for 20 minutes.
5. Stop the spindle rotation and allow the
spindle to come to a complete stop by itself.
6. Set the spindle speed to the high range, then
start the spindle rotation at a medium speed
and let the mill run for another 20 minutes.
7. Stop the spindle rotation, and turn the mill
OFF.
The spindle break-in of the mill is now complete!
-24-
Page 27
For Machines Mfg. Since 8 /09Model SB1027
OPERATION
Operation Overview
The purpose of this overview is to give an
example of a typical milling operation. Read
through the steps below to better understand
the controls and functions described later in this
manual, so that you will know how they are used
to successfully operate the mill.
This overview is not intended to be a step-by-step
operational guide.
To reduce the risk of
serious injury when using
this machine, read and
understand this entire
manual before beginning
any operations.
In a typical milling operation, the operator
does the following:
1. Examines the workpiece to make sure it is
suitable for milling.
2. Firmly clamps the workpiece to the table.
Loose hair, clothing, or
jewelry could get caught
in machinery and cause
serious personal injury.
Keep these items away
from moving parts at all
times to reduce this risk.
During operation, small
metal chips may become
airborne, leading to serious
eye injury. Wear safety
glasses to reduce this risk.
5. Configures the mill for the correct spindle
speed of the operation.
6. Puts on personal protective gear and makes
sure the workpiece and table are clear of all
tools, cords, and other items.
7. Starts the spindle rotation and performs the
operation.
3. Installs the correct cutting tool for the
operation.
4. Uses the manual downfeed and table
controls to confirm the correct positioning
of the cutting tool and workpiece for the
operation. If the X-axis power feed will be
used during the operation, the operator
confirms the speed and length of table
movement required.
8. Turns the mill OFF.
-25-
Page 28
Model SB1027
OPERATION
For Machines Mfg. Since 8 /09
Control Panel
Use Figures 17–18 and the following
descriptions to understand the functions of the
mill main power switch and the control panel.
Main Power Switch:
power to flow to the control panel.
Figure 17. Location of the main power switch on the
When turned ON, enables
Main Power Switch
electrical box door.
Spindle
Speed
Display
Spindle
Spindle
Speed Dial
Figure 18. Control panel.
ON Button: When pressed, illuminates and
enables power to flow to the mill's electrical
components.
Direction
Switch
Emergency
Coolant
Switch
STOP
Button
Button
ON
Spindle Speed Display:
spindle speed in revolutions per minute (RPM).
Emergency STOP Button:
disables the flow of power to the mill's electrical
components. Before resuming operation, this
button must be reset by twisting it clockwise
until it pops out.
Shows the current
When pressed,
Coolant Switch:
OFF.
Spindle Direction Switch:
reverses spindle rotation.
Spindle Speed Dial:
Turns coolant pump ON and
Controls the spindle speed.
Starts, stops, and
-26-
Page 29
For Machines Mfg. Since 8 /09Model SB1027
X-Axis or Longitudinal Travel
(Left & Right)
Y-Axis or
Cross Travel
(In & Out)
Z-Axis or Vertical Elevation
(Up & Down)
OPERATION
Table Movement
The mill table moves in three directions, as
illustrated in Figure 19:
•X-axis (longitudinal)
•Y-axis(cross)
•Z-axis(vertical)
These movements are controlled by table ball
handles and the Z-axis crank. Additionally, the
table can be moved along the X-axis with the
power feed.
Table Locks
Refer to Figure 20 for the locations of the locks
used to secure the table in place.
X-Axis Locks
Y-Axis
Lock
Z-Axis
Locks
Figure 20. Locations of table locks.
Graduated Index Rings
The table ball handles and elevation crank have
graduated index rings attached (see Figure 21)
that are used to accurately determine table
movement in the increments listed in the table
below:
Figure 19. The directions of table movement.
Always keep the table locked in place unless
table movement is required for your operation.
Unexpected movement of the table during
operations could cause damage to the cutter
or workpiece.
AxisIndividual
Increment
X0.001"0.200"
Y0.001"0.200"
Z0.001"0.100"
Index Rings
Figure 21. Graduated table index rings.
One Full
Revolution
-27-
Page 30
Model SB1027
A
B
C
D
E
F
H
G
I
OPERATION
For Machines Mfg. Since 8 /09
X-Axis Power Feed
The mill is equipped with a power feed unit for
X-axis table movement. Refer to the illustration
in Figure 22 and the descriptions below
to understand the functions of the various
components of the power feed system.
Figure 22. Power feed system components.
A. Limit Switch: Stops table movement when
either of the switch side plungers are pressed
by the limit stops.
H. X-Axis Ball Handle: Manually moves the
table.
I. Graduated Index Ring: Display the distance
of table travel in 0.001" increments, with one
full revolution equal to 0.200" of table travel.
To confirm the power feed settings that you will
be using during operation, we recommend that
you use the power feed to move the table through
the intended cutting path before starting the
spindle rotation and taking the cut.
2. Position the limit stops along the front table
slot to limit the distance of table travel that
is correct for your operation.
Note: Make sure the cap screws firmly lock the
limit stops in place when positioned.
B. Limit Stop: Restricts table movement when
positioned along the front of the table.
C. Rapid Traverse Button: Moves the table at
full speed when it is in motion.
D. Directional Lever: Selects the direction of
table movement. The middle position is
neutral.
E. Speed Dial: Controls the speed of the power
feed. Turning the dial clockwise causes the
table to move faster.
F. Circuit Breaker Reset Button: Resets
the internal circuit breaker if the unit is
overloaded and shuts down.
G. Power Switch:Turns the power feed ON and
OFF.
3. Turn the speed dial all the way
counterclockwise to the slowest setting, move
the directional lever to neutral (middle)
position, then flip the power switch up to
turn the unit ON.
4. With your hand poised over the power switch
in case you need to suddenly turn the unit
OFF, move the directional lever in the
desired direction of table travel.
5. Use the speed dial to slowly bring the speed
of movement up to the desired rate.
6. When you are finished using the power
feed, turn the unit OFF, then rotate the
speed dial all the way clockwise and move
the directional lever to the neutral (middle)
position to avoid unexpected table movement
when you next flip the power switch up.
-28-
Page 31
For Machines Mfg. Since 8 /09Model SB1027
!
OPERATION
Head Movement
The mill head tilts 45° back and forth,
and rotates 90° left and right, as shown in
Figures 23–24.
45°
Figure 23. Head tilts 45° back-and-forth.
90°
Always lock the head firmly in place after
tilting or rotating it. Unexpected movement
of the head during operations could cause
damage to the cutter or workpiece.
in the direction of the tilt, then slowly rotate
the tilt bolt. Rotating this bolt clockwise will
tilt the head back.
4. When the head is in the correct position
for your operation, re-tighten all three lock
bolts.
-29-
Page 32
Model SB1027
!
Table
Spindle
X-Axis
Y-Axis
Z-Axis
90º
90º
OPERATION
For Machines Mfg. Since 8 /09
Rotating Head
1. DISCONNECT MILL FROM POWER!
2. Loosen the four rotation lock bolts on the
face of the head shown in Figure 26.
Rotation Bolt
Lock Bolts
Figure 26. Head rotating controls.
3. Use one hand to apply pressure to the head
in the direction of rotation, then slowly turn
the rotation bolt.
Tramming Spindle
After positioning the head at an angle and when
your operation requires that the spindle axis be
precisely perpendicular to the table, you must
tram or align the spindle with the table to ensure
the spindle is exactly 90° to the table.
This procedure involves mounting a dial test
indicator to the quill or spindle, rotating it
around the table, and adjusting the spindle
axis (Z-axis) 90° to the table X- and Y-axes, as
illustrated in Figure 27.
4. Re-tighten the lock bolts when you have the
head in the desired position.
Figure 27. Spindle axis perpendicular to the table X-
and Y-axes.
We encourage you to research the many
variations of spindle tramming to find the one
that works best for you. If you do not already
have a preference for performing this operation,
use the following widely-used procedure for
accurately tramming the spindle to the table.
Keep in mind that all workpiece top surfaces are
not exactly parallel with the table top. You may
choose to tram the spindle to the top surface of
the workpiece after it is mounted instead of that
of the table.
-30-
Page 33
For Machines Mfg. Since 8 /09Model SB1027
Table
Spindle
Dial Test Indicator
Indicator Holder
Parallel Block
Parallel Block
Indicator
Spindle
Table (Top View)
OPERATION
Tools Needed Qty
Dial Test Indicator
(with at least 0.0005" resolution) .................. 1
Indicator Holder
(mounted on the quill/spindle) ......................1
Precision Parallel Block
(at least 9" in length) ..................................... 1
Note: A precision-ground plate can be
substituted for the parallel blocks. Keep in mind
that the farther the indicator point can be placed
from the spindle axis, the more accurate the
alignment measurements will be.
To tram the spindle to the table:
1. DISCONNECT MILL FROM POWER!
2. Prepare the mill by performing the following
tasks:
• Stonethetabletoremoveallnicksand
burrs, then clean off all debris. Verify the
table is clean by running your hand over
the top of it.
• Positionthetableforthemilling
operation you intend to perform after the
tramming—preferably centered to the
saddle.
• Tightenanytable,knee,quill,orram
locks that should be tight during the
intended milling operation.
4. Install the indicator holder into the spindle
or onto the quill, then mount the indicator
onto it so that the point is as parallel to
the block as possible (see the illustration in
Figure 28 for an example).
Figure 28. Dial test indicator mounted.
5. To measure spindle alignment along the
X-axis, place the parallel block directly under
the spindle and indicator across the length of
the table, as illustrated in Figure 29.
Note: If you must re-position the quill or the
knee to accommodate the above step, then
review the tasks in Step 2 to make sure the
mill is properly prepared for the tramming
operation.
3. Place the parallel block underneath the
spindle.
Figure 29. Parallel block positioned for the X-axis
measurement (top view).
-31-
Page 34
Model SB1027
Parallel Block
Indicator
Spindle
Table (Top View)
OPERATION
For Machines Mfg. Since 8 /09
Note: Generally, the goal in the next steps is to
get the difference of the indicator readings
between the end of the parallel bar down to
0.0005". However, the acceptable variance
will depend on the requirements for your
operation.
6. Rotate the spindle by hand so that the
indicator point rests on one end of the
parallel block, as illustrated in Figure 29,
then zero the dial.
7. Rotate the spindle so that the indicator point
rests in the same manner on the other end of
the block, then read the dial.
— If the indicator dial still reads zero or is
within the acceptable variance, continue
on with Step 8.
— If the indicator dial has moved from zero
beyond the acceptable variance, you will
need to compensate for that amount by
rotating the head left or right. Repeat
Steps 5–6 until you are satisfied with the
spindle axis alignment along the table
X-axis.
9. Place the parallel block directly under the
spindle and across the width of the table, as
illustrated in Figure 30.
Figure 30. Parallel block positioned for the Y-axis
measurement (top view).
10. Rotate the spindle so that the indicator point
rests on the parallel bar, as illustrated in
Figure 30, then zero the dial.
11. Rotate the spindle so that the indicator point
rests on the other end of the bar in the same
manner, then read the dial.
8. Re-tighten the rotation lock bolts.
Note: It is a good idea to repeat Steps 5-6 again
Note: Keep one of the rotation lock bolts
snug so that the head does not move
loosely while you adjust it small amounts.
in case the head moved slightly during the
process of re-tightening the lock bolts.
— If the indicator dial still reads zero or
is within the acceptable variance, the
spindle is precisely perpendicular to the
table in both the X- and Y-axes and the
tramming procedure is complete.
— If the indicator dial has moved from zero
beyond the acceptable variance, you will
need to compensate for that amount by
tilting the head forward or back. Repeat
Steps 9–10 until you are satisfied with
the spindle axis alignment along the table
Y-axis.
Note: Keep one of the tilt lock bolts snug so
that the head does not move loosely while
you adjust it small amounts.
12. Re-tighten the tilt lock bolts.
Note: It is a good idea to repeat Steps 9-10 again
in case the head moved slightly during the
process of re-tightening the lock bolts.
-32-
Page 35
For Machines Mfg. Since 8 /09Model SB1027
!
!
OPERATION
Ram Movement
The ram travels back and forth 13" and rotates
360° in either direction around the turret.
Always lock the head firmly in place after
tilting or rotating it. Unexpected movement
of the head during operations could cause
damage to the cutter or workpiece.
Rotating Ram
1. DISCONNECT MILL FROM POWER!
2. Loosen the four lock bolts on top of the turret
(see Figure 32).
Note: There are two lock bolts on either side of
the ram.
Lock Bolts
(2 of 4)
Rotation
Scale
Adjustment
Bolt
Figure 31. Ram back-and-forth movement controls.
3. Make sure there are no obstructions to
ram travel, especially with the spindle tool
around the workpiece, then slowly rotate the
adjustment bolt to move the ram. Rotating
the bolt clockwise will move the ram
backward.
4. Re-tighten the lock levers after you have re-
positioned the ram.
Figure 32. Ram rotating controls.
Note: In the next step, take care not to entangle
or stretch the electrical cabling as you move
the ram around the turret.
3. Push on the head to manually rotate it. Use
the rotation scale to determine the correct
position for your operation, then re-tighten
the four lock bolts to secure the ram in place.
-33-
Page 36
Model SB1027
Cutting Speed (FPM) x 12
*Recommended
Tool Dia. (in inches) x 3.14
= SpindleSpeed (RPM)
*Double if using carbide cutting tool
OPERATION
Setting Spindle Speed
For Machines Mfg. Since 8 /09
Using the correct spindle speed is important
for safe and satisfactory results, as well as
maximizing tool life.
To set the spindle speed for your operation, you
will need to: (1) Determine the best spindle speed
for the cutting task, and (2) configure the mill
controls to produce the required spindle speed.
Determining Spindle Speed
Many variables affect the optimum spindle speed
to use for any given operation, but the two most
important are the recommended cutting speed
for the workpiece material and the diameter of
the cutting tool, as noted in Figure 33:
To avoid damage to the spindle, gears, or
cutting tools:
• SpindlerotationmustbeturnedOFFand
the spindle must be at a complete stop
BEFORE you change the spindle speed
range.
• ThemillisdesignedtoONLYoperatewith
the spindle speed range selector in either
the high or low position. To avoid damaging
the moving parts inside the headstock,
never start spindle rotation without the
range selector detent pin firmly seated in
either the high or low position.
• Whenchangingthespindlespeedrange
and the direction of spindle rotation
reverses, you will need to either change
the cutting tool for the direction of spindle
rotation or use the spindle direction switch
to compensate for the change.
Figure 33. Spindle speed formula for milling.
Cutting speed, typically defined in feet per
minute (FPM), is the speed at which the edge of a
tool moves across the material surface.
A recommended cutting speed is an ideal speed
for cutting a type of material in order to produce
the desired finish and optimize tool life.
The books Machinery’s Handbook or Machine Shop Practice, and some internet sites, provide
excellent recommendations for which cutting
speeds to use when calculating the spindle speed.
These sources also provide a wealth of additional
information about the variables that affect
cutting speed and they are a good educational
resource.
Also, there are a large number of easy-to-use
spindle speed calculators that can be found on
the internet. These sources will help you take
into account all applicable variables to determine
the best spindle speed for the operation.
Setting Spindle Speed Range
Setting the spindle speed range involves using a
lever to engage/disengage the spindle spline with
the bull gear.
To set the spindle speed range:
1. DISCONNECT MILL FROM POWER!
2. Use the chart below to find the spindle speed
range that includes the required spindle
speed for your operation.
Spindle Speed Ranges
Low Range60–575 RPM
High Range575–5000 RPM
When the spindle speed range is changed,
the direction of spindle rotation will reverse.
ALWAYS know which way the spindle
is rotating before beginning the cutting
operation.
-34-
Page 37
For Machines Mfg. Since 8 /09Model SB1027
3. Press the spindle speed range lever shown
in Figure 34 toward the head to release
the detent pin from the detent plate, move
selector so that the pin is over the other
detent, then release the selector.
— When the lever is pointing to the rear and
the front detent is engaged, the low speed
range is selected. Conversely, when the
lever is pointing toward the front and the
rear detent is engaged, the high speed
range is selected.
OPERATION
Downfeed Controls
Spindle downfeed movement on the mill
is controlled by three mechanisms: 1) The
coarse downfeed handle, 2) the fine downfeed
handwheel, and 3) the auto-downfeed system.
Using the Coarse Downfeed
Handle
1. DISCONNECT MILL FROM POWER!
Note: It may be necessary to turn the spindle by
hand as you move the range lever to enable
the gears to mesh.
HighLow
Detent
Spindle
Speed
Range
Lever
Figure 34. Spindle speed range selector.
Plate
Setting Spindle Speed
Use the spindle speed dial and display (see
Figure 35) to set the required spindle speed
within the speed range selected.
2. To set the downfeed for manual control,
pull the downfeed selector knob out, then
rotate it clockwise until the selector pin
under the knob seats in the forward manual
(disengaged) position, as shown in Figure 36 and illustrated in Figure 37 on the next
page.
Note: It may be necessary to turn the spindle by
hand as you move the selector to enable the
gears to mesh.
Downfeed
Selector
The top values of the spindle speed display are
for the high spindle speed range, and the bottom
values are for the low range.
Speed
Display
Spindle
Speed
Dial
Figure 35. Spindle speed dial and display.
Figure 36. Downfeed selector in the manual
(disengaged) position.
3. Make sure the selector pin is firmly seated
in the detent by attempting to move the
selector without pulling the knob out.
-35-
Page 38
Model SB1027
Manual (Disengaged) Position
Auto-Downfeed (Engaged) Position
OPERATION
4. Make sure the pin of the coarse downfeed
handle hub is engaged with one of the
detents on the downfeed sleeve (see
Figure 38).
Figure 38. Coarse downfeed handle hub, detents, and
For Machines Mfg. Since 8 /09
Handle
Hub
Detents
& Pin
pin.
Figure 37. Downfeed selector positions.
5. Make sure the quill lock lever is loose so that
the quill can easily move.
6. Rotate the coarse downfeed handle around
the hub to control the depth of the spindle.
-36-
Page 39
For Machines Mfg. Since 8 /09Model SB1027
OPERATION
Fine Downfeed Controls
There are a number of devices on the head that
are used with the fine downfeed handwheel or
the auto-downfeed system. Refer to Figure 39
and the descriptions below to become familiar
with these controls.
I
A
B
C
D
E
Figure 39. Fine downfeed controls.
A. Auto-Downfeed Rate Selector: Selects one of
the three auto-downfeed rates.
B. Fine Downfeed Handwheel: Manually
controls fine spindle downfeed.
H
G
F
G. Downfeed Stop & Locking Wheel: Sets
the depth of spindle downfeed. The stop
is threaded into position, then the locking
wheel is used to secure it in place.
H. Quill Dog: Moves with the quill and spindle
and disengages the downfeed clutch lever
when it meets either the top or downfeed
stop.
I. Downfeed Selector: Sets the mill for manual
downfeed or auto-downfeed control.
Using the Fine Downfeed
Handwheel
1. Make sure that the spindle rotation is turned
OFF and the spindle is at a complete stop.
2. To set the downfeed for manual control, pull
the downfeed selector knob out, then rotate
the selector clockwise until the selector pin
seats in the forward manual (disengaged)
position.
3. Set the auto-downfeed direction pin in the
neutral (middle) position to disengage the
fine downfeed handwheel from the autodownfeed gears.
When the spindle rotation is reversed,
either by changing the spindle speed range
or by using the spindle direction switch,
the direction of spindle auto-downfeed will
reverse.
C. Auto-Downfeed Direction Pin: Starts, stops,
and reverses the auto-downfeed direction.
D. Fine Downfeed Clutch Lever: Engages the
fine/auto-downfeed gears.
E. Downfeed Scale: Used with the quill dog,
shows the depth of spindle downfeed in
inches.
F. Quill Lock Lever: Secures the quill in place
for increased stability during operations.
4. Position the downfeed stop for the spindle
depth that is correct for your operation, then
secure it in place with the locking wheel.
5. Use the coarse downfeed lever to slightly
lower the spindle until you can pull the
clutch lever out to the left and it locks in
place. This will engage the fine handwheel
with the quill and spindle.
6. To lower the spindle, rotate the fine
downfeed handwheel. When the quill dog
meets the downfeed stop, the clutch lever
will disengage and the spindle will return to
the top.
-37-
Page 40
Model SB1027
Manual (Disengaged) Position
Auto-Downfeed (Engaged) Position
OPERATION
For Machines Mfg. Since 8 /09
Using the Auto-Downfeed System
When using the auto-downfeed system, the
spindle will move in the direction you choose
with the auto-downfeed direction pin. When the
quill dog reaches the top or meets the downfeed
stop, the downfeed clutch lever releases. Then, if
the spindle was traveling upward, the movement
simply stops. If the spindle was traveling
downward, then the spindle moves back to the
top at a rate controlled by the return spring on
the left side of the head.
To use the auto-downfeed system:
1. Make sure that the spindle rotation is turned
OFF and the spindle is at a complete stop.
2. To set the mill for auto-downfeed, pull the
downfeed selector knob out, then rotate the
selector clockwise and seat the pin in the
rear auto-downfeed (engaged) position, as
illustrated in Figure 40.
4. Position the auto-downfeed direction pin for
the spindle travel that is correct for your
operation. It may be necessary to rock the
fine downfeed handwheel back-and-forth to
move the pin all the way in or out.
Note:The direction pin has three positions: 1)
In for one downfeed direction, 2) middle for
neutral or no movement, and 3) out for the
reverse direction. The direction of spindle
travel for the in and out positions is relative
to the direction of spindle rotation. Keep in
mind that spindle rotation and downfeed
direction will reverse when the spindle speed
range is changed.
5. Make sure the clutch lever is all the way to
the right in the disengaged position so that
the spindle will not travel when rotation is
started.
Note: We recommend that you complete the
remaining steps without a cutting tool
installed, without a workpiece in place, and
the table lower than the maximum spindle
downfeed travel. This will enable you to test
and confirm the settings before beginning
the actual cutting operation.
Figure 40. Downfeed selector in the auto-downfeed
(engaged) position.
3. Position the downfeed stop for the spindle
depth that is correct for your operation, then
secure it in place with the locking wheel.
To avoid damage to the system gearing, never
use the auto-downfeed system with spindle
speeds over 3000 RPM.
6. Set the mill for the correct spindle speed,
then begin spindle rotation.
-38-
Page 41
For Machines Mfg. Since 8 /09Model SB1027
M
L
H
H = 0.006 in./rev.
L = 0.0015 in./rev.
M = 0.003 in./rev.
(Rates given in inches of travel
per revolution of the spindle)
OPERATION
Spindle Brake
To avoid the risk of gear damage, always
start spindle rotation before using the autodownfeed rate selector.
7. Select one of the three downfeed rates by
pulling the auto-downfeed rate selector
knob out, position the selector over the
appropriate detent, then release the knob.
Make sure the pin is firmly seated by
attempting to move the selector without
pulling the knob out.
Note: Refer to the illustration in Figure 41 when
selecting the downfeed rate.
When pressed backward, the spindle brake lever
(see Figure 42) activates a switch that turns the
spindle motor OFF and engages drum-type brake
pads to stop spindle rotation.
Spindle
Brake Lever
Figure 42. Location of the spindle brake lever.
Figure 41. Positions of the auto-downfeed rate
8. Use the coarse downfeed lever to lower the
spindle slightly until you can pull the clutch
lever out to the left and it locks in place,
which will start the auto-downfeed spindle
travel.
selector.
-39-
Page 42
Model SB1027
OPERATION
Loading/Unloading
Tooling
For Machines Mfg. Since 8 /09
5. With one hand holding the tool in place,
insert the drawbar into the spindle from the
top of the head, then thread it into the tool
(see Figure 44).
The mill is equipped with an R8 spindle taper
and a
Figure 43.
inside the spindle taper and the mating
surface of the tooling.
Note: Debris or oil substances can prevent the
tooling and spindle from properly mating.
This condition can cause excessive vibration,
poor cutting results, or tool/workpiece
damage.
3. Place the mill in the low spindle speed range
to keep the spindle from turning in the next
steps.
4. Align the keyway of the tool with the
protruding pin inside the spindle taper, then
firmly push the tool into the spindle to seat
it.
1. DISCONNECT MILL FROM POWER!
2. Place the mill in the low spindle speed range
to keep the spindle from turning in the next
step.
Note: Make sure that the drawbar has at least
three threads engaged with the tooling in the
next step to avoid damaging the threads of
the drawbar or tool.
3. Loosen the drawbar a couple of turns, then
tap the top of it with brass hammer to knock
the tool loose at the bottom of the spindle.
4. Support the tool with one hand, then
completely unthread the drawbar.
-40-
Page 43
For Machines Mfg. Since 8 /09Model SB1027
!
MAINTENANCE
Maintenance Schedule
Always disconnect
machine from power before
performing maintenance or
serious personal injury may
result.
Each operator of this machine is responsible
for ensuring proper care of the equipment. We
strongly recommend that all operators make
a habit of following the daily maintenance
procedures.
For optimum performance from this machine,
this maintenance schedule must be strictly
followed. Use the Monthly Maintenance Chart
on Page 42 to ensure this is done.
Ongoing
To maintain a low risk of injury and proper
machine operation, if you ever observe any of the
items below shut the machine down immediately,
disconnect it from power, and fix the problem
before continuing operations.
•Loosemountingboltsorfasteners.
•Worn,frayed,cracked,ordamagedwires.
•EmergencySTOPbuttonnotworking
correctly.
•Missingbeltguards.
•Reductioninbrakingspeedorefficiency.
•Coolantnotflowingcorrectly.
•Anyotherunsafecondition.
Machine Storage
Before Beginning Operations
•Makesuretheelectricboxdoorisclosedand
properly latched.
•Turnthespindledirectionswitchtothe
STOP (middle) position and the speed dial
all the way counterclockwise to prevent highspeed spindle startup when connected to
power (see Page 26).
•Movethedownfeedselectortothemanual
(forward) position to prevent the spindle
from unexpectedly downfeeding when
rotation is started (see Page 35).
•MakesuretheX-axispowerfeedisturned
OFF to prevent unintentional table
movement when connected to power (see
Page 28).
•Checkthecoolantreservoirinthebase.Fill
or clean out if necessary (see Page 48).
•Performthelubricationtasksasdirectedin
the Lubrication section on Page 43.
•Checktablemovementinallthreeaxesfor
loose/tight gibs. Adjust the gibs if necessary
(see Page 50).
Daily, After Operations
•PushtheemergencySTOPbutton,turnthe
main power switch to the OFF position, and
disconnect the machine from power.
South Bend Lathe Co.® Monthly Maintenance Chart for Model SB1027 Milling Machine
Inspection
-42-
Coolant
System
Gib
Adjustment
End of Day
Disconnected
From Power
Cleaned &
Protected
Lubrication
Quill
Table, Saddle,
Knee Ways
Speed Range
Bearing
Sleeve
Headstock
Gearing
Ram Ways
Table
Elevation
Leadscrew
Use this chart to keep track of the maintenance performed on the mill. Cross out
or initial the “Day” box for each item on the list. If the box is blacked out, mainte-
Power Feed
Gears
nance is not required for that item on that day.
Make copies of this page to use each month. Keep each charts as a maintenance
record for the mill.
Month/Year:
www.southbendlathe.com
(360)734-1540•FAX:(360)676-1075
Page 45
For Machines Mfg. Since 8 /09Model SB1027
MAINTENANCE
Cleaning
Regular cleaning is one of the most important
steps in taking good care of this machine. Each
operator is responsible for cleaning the machine
immediately after using it or at the end of the
day. We recommend that the cleaning routine
be planned into the workflow schedule, so that
adequate time is set aside to do the job right.
Typically, the easiest way to clean swarf from the
ways and table is to use a wet/dry shop vacuum
that is dedicated for this purpose only. The small
chips leftover after vacuuming can be wiped up
with a slightly oiled rag. Avoid using compressed
air to blow off chips, as it may drive them deeper
into moving surfaces and could cause sharp chips
to fly into your face or hands.
All visible swarf should be removed from the mill
during cleaning. Remember, personal neatness
gives you personality!
Unpainted & Machined Surfaces
Besides the ways and elevation leadscrew, all
other unpainted and machined surfaces should
be wiped down daily to keep them rust-free
and in top condition. This includes surface you
can find that could be vulnerable to rust if left
unprotected (this especially includes any parts
that may be exposed to water soluble cutting
fluids). Typically with these parts, a thin film of
oil is all that is necessary for protection.
Lubrication
The mill has numerous moving metal-tometal contacts that require regular and proper
lubrication to ensure efficient and long-lasting
operation, and to protect your investment.
Other than the lubrication points covered in
this section, all other bearings are internally
lubricated and sealed at the factory. Simply leave
them alone unless they need to be replaced.
Before performing any lubrication task,
DISCONNECT THE MILL FROM POWER!
Important: Before adding lubricant, clean the
debris and grime from the oil cup or grease
fitting and the immediate area to prevent
contamination of the oil cups, grease fittings, or
new lubricant.
Use the schedule and information in Figure 45
as a daily guide for lubrication tasks.
The following recommended lubrication
schedule is based on light to medium mill
usage. Keeping in mind that lubrication helps
to protect the value and operation of the mill,
you may need to perform the lubrication tasks
more frequently depending on your usage.
Frequency
Lubrication Task
Quill3–4 hrs.44
Table Ways (One-Shot
Oiler)
Speed Range Bearing
Sleeve
(Hours of
Operation)
4–8 hrs.44
40 hrs.45
Page
Ref.
Headstock Gearing40 hrs.45
Ram Ways40 hrs.45
Table Elevation
Leadscrew (Z-Axis)
Power Feed Gears160 hrs.46
Figure 45. Recommended lubrication tasks,
schedules, and instruction page references.
40 hrs.46
-43-
Page 46
Model SB1027
Failure to follow reasonable lubrication
practices as instructed in this manual for the
mill could lead to premature failure of the mill
and will void the warranty.
MAINTENANCE
Quill
Oil Type ...... Mobil Vactra 2 or ISO 68 Equivalent
Oil Amount .......................................... Fill Oil Cup
Check/Add Frequency ..............4 hrs. of Operation
For Machines Mfg. Since 8 /09
Table Ways (One-Shot Oiler)
Oil Type ...... Mobil Vactra 2 or ISO 68 Equivalent
Oil Amount ................... One Pull of Pump Handle
Check/Add Frequency ..........4–8 hrs. of Operation
The one-shot oiler is connected to a series of
aluminum tubes that carry the lubricant to wear
points along the table horizontal and vertical
ways. After using the oiler pump handle shown
in Figure 47, move the table through all paths of
movement to evenly distribute the lubricant.
Lift the oil cup cap shown in Figure 46 to fill the
oil cup with lubricant.
Quill Oil Cup
Figure 46. Quill oil cup location.
Use the sight glass on the side of the oiler to
know when to re-fill the reservoir.
Reservoir Cap
Pump
Handle
Sight
Glass
Figure 47. One-shot oiler controls.
-44-
Page 47
For Machines Mfg. Since 8 /09Model SB1027
MAINTENANCE
Speed Range Bearing Sleeve
Oil Type ...... Mobil Vactra 2 or ISO 68 Equivalent
Oil Amount .......................................... Fill Oil Cup
Check/Add Frequency ............40 hrs. of Operation
Lift the oil cup cap shown in Figure 48 to fill the
oil cup with lubricant.
Bearing Sleeve
Oil Cup
Figure 48. Speed range bearing sleeve.
Ram Ways
Oil Type ...... Mobil Vactra 2 or ISO 68 Equivalent
Check/Add Frequency ............40 hrs. of Operation
Move the ram back and forth as necessary
to access the full length of the ways (see
Figure 50), then use a clean shop rag to apply a
thin coat of lubricant.
Ram Ways
Headstock Gearing
Grease Type .........................NLGI 2 or Equivalent
Grease Amount ...........Two Pumps of Grease Gun
Check/Add Frequency ............40 hrs. of Operation
Add two pumps from a grease gun to the grease
fitting for the mill that is shown in Figure 49.
Headstock Gearing
Grease Fitting
Figure 49. Headstock gearing grease fitting.
Figure 50. Exposing the ram ways for lubrication.
Head & Ram Rack & Pinion Gear
The interaction between the cast iron surfaces
of these devices (see Figure 51) produces a dry
powder that provides an adequate lubrication.
Do not apply any other lubricant which could
produce a stiff compound that may interfere with
smooth movement.
Head Rack
& Pinion Gear
Ram Rack
Ram Pinion
Gear
Figure 51. Locations of head and ram rack and pinion
gears.
-45-
Page 48
Model SB1027
MAINTENANCE
For Machines Mfg. Since 8 /09
Table Elevation Leadscrew
Grease Type .........................NLGI 2 or Equivalent
Check/Add Frequency ............40 hrs. of Operation
Elevate the table all the way up, then use
mineral spirits to clean any debris and built-up
grime from the elevation leadscrew threads. Add
one pump from a grease gun to the leadscrew
grease fitting shown in Figure 52, then run
the knee up and down to distribute the grease.
Repeat this process until the entire leadscrew is
covered with a thin coat of lubricant.
Leadscrew
Grease
Fitting
Power Feed Gears
Grease Type .......Medium-Weight Lithium Grease
Grease Amount ...........Two Pumps of Grease Gun
Check/Add Frequency ............40 hrs. of Operation
power unit end of the longitudinal leadscrew
(see Figure 53).
Graduated Dial Ring
Leadscrew
Figure 52. Table elevation leadscrew and grease
fitting.
Retaining Ring
Figure 53. Power feed ball handle removed.
3. Unthread and remove the knurled retaining
ring and graduated dial ring from the end of
the leadscrew.
-46-
Page 49
For Machines Mfg. Since 8 /09Model SB1027
MAINTENANCE
4. Remove the brass bevel gear from the
leadscrew, then remove the leadscrew
alignment key (see Figure 54).
Alignment Key
Brass Bevel Gear
Figure 54. Power feed brass gear and leadscrew
alignment key.
5. Brush a light coat of lubricant on the teeth
of the bevel gear and the smaller drive gear
(see Figure 55).
6. Replace the leadscrew alignment key, then
align the bevel gear keyway with the key as
you slide the gear onto the leadscrew and
mesh its teeth with the drive gear.
7. Replace the graduated dial ring into position
and secure it with the knurled retaining
ring—do not overtighten.
8. Slide the ball handle onto the leadscrew,
align the keyway with the leadscrew
alignment key, then secure it with the hex
nut removed in Step 2.
9. Move the table with the power feed ball
handle to check the gear movement and to
distribute the grease on the gears. If the
movement is not smooth, repeat Steps 2–8
until it is.
Drive Gear
Bevel Gear
Figure 55. Power feed brass gear and drive gear.
-47-
Page 50
Model SB1027
MAINTENANCE
For Machines Mfg. Since 8 /09
Coolant Reservoir
BIOLOGICAL & POISON
HAZARD!
Use the correct personal
protection equipment
when handling cutting
fluid. Follow federal, state,
and fluid manufacturer
requirements for proper
disposal.
A small amount of coolant is lost during normal
operation. Check the coolant reservoir regularly
and fill it if necessary. We recommend changing
the coolant every three months or sooner if it
develops an unpleasant odor.
The coolant reservoir holds approximately five
gallons (19 liters) of fluid.
To check the coolant level:
1. DISCONNECT MILL FROM POWER!
2. Clean away debris and grime from the
coolant drain screens on the base of the mill
(see Figure 56), then insert a clean and dry
piece of wire through one of the screens to
check the level of the coolant.
Drain
Screens
Figure 56. Locations of the coolant drain screens.
Piece of Wire .......................................................... 1
Running the coolant pump without adequate
coolant in the reservoir may permanently
damage the coolant pump. This action is
considered abusive and is not covered by the
warranty.
3. If the level of coolant in the reservoir is less
than 2", add more fluid through the screen to
fill the tank.
-48-
Page 51
For Machines Mfg. Since 8 /09Model SB1027
The coolant reservoir on this mill is only
designed to store coolant. During storage
some fluids grow dangerous microbes, which
will produce an unpleasant odor. As well,
due to the collection of toxic metal chips in
the fluid, the fluid can become a potent and
extremely poisonous solution to humans and
animals. Use the correct personal protection
equipment and immediately change the
coolant if either of these conditions occur.
Follow Federal, State, and the coolant
manufacturer's requirement to safely dispose
of the used coolant.
MAINTENANCE
5. Remove the two pump mounting cap screws
and move the pump out of the way (see
Figure 57).
Figure 57. Location of coolant pump.
6. Use rags, scrapers, and cleaning solvent
to thoroughly clean out the bottom of the
reservoir and the base of the pump. Make
sure that the interior is completely dry
before adding new coolant.
Note: Use a cleaning solvent that is compatible
with the type of coolant. For instance, if you
are using a water-base coolant, then use a
water-base cleaning solvent.
dry, replace the pump, access panel, and the
drain plug.
8. Clean away debris and grime from the
coolant drain screens on the base of the mill
(see Figure 56 on the previous page), then
pour the coolant through one of the screens
to fill the reservoir.
2. Place a the catch pan on the table, position
the coolant nozzle over the pan, then use the
coolant pump to drain the reservoir.
Note: When the catch pan is full, empty it into
the 5 gallon bucket, then repeat the process.
3. DISCONNECT MILL FROM POWER!
4. Remove the coolant reservoir access panel
from the rear of the column.
-49-
Page 52
Model SB1027
MAINTENANCE
For Machines Mfg. Since 8 /09
Machine Storage
To avoid rust problems or corrosion damage,
use the following information to protect your
investment when storing the mill for any length
of time.
•DISCONNECTMILLFROMPOWER!
•Lubricatethemillasdirectedinthe
Lubrication section beginning on Page 43.
•Cleanoutthecoolantreservoirinthebase
of the mill as directed in the Changing
Coolant section on Page 49.
•Thoroughlycleanallunpainted,baremetal
surfaces, then coat them with a light weight
grease or rust preventative. Take care to
ensure these surfaces are completely covered
but that the grease or rust preventative is
kept off painted surfaces.
Note: If the machine will be out of service for
only a short period of time, use way oil or a
good grade of medium-weight machine oil
(not auto engine oil) in place of the grease or
rust preventative.
•Loosenthebeltstopreventthemfrom
stretching during storage. Post a reminder
on the mill that the belts need to be reinstalled or tensioned before resuming
operations.
•Placeafewmoistureabsorbingdesiccant
packs inside the electrical and control panel
boxes.
•Coverandplacethemachineinadryarea
that is out of direct sunlight and away from
hazardous fumes, paint, solvents, or gas.
Fumes and sunlight can bleach or discolor
paint and plastic parts.
Adjusting Gibs
Gibs are tapered lengths of metal between two
dovetail sliding surfaces. Gibs control the gap
between these surfaces and how they slide past
one another. Correctly adjusting the gibs is
critical to producing good milling results.
Tight gibs make table movement more
accurate but stiff. Loose gibs make moving the
table sloppy but easier to do. The goal of gib
adjustment is to remove unnecessary sloppiness
without causing the ways to bind.
Gibs are adjusted with a screw on each end of
the gib, that move the tapered gib back-andforth to increase or decrease the friction pressure
between the sliding surfaces. The process of
properly adjusting the gibs requires trial-anderror and patience.
DISCONNECT MILL FROM POWER BEFORE
ADJUSTING THE GIBS!
Make sure all table and knee locks are loose.
Then, loosen one gib adjustment screw and
tighten the other the same amount to move the
gib. Use the handwheel/crank to move table/
knee until you feel a slight drag in that path of
movement.
Refer to Figures 58–60 on the next page to
identify the locations of the table, saddle, and
knee gibs, and one of the two adjustment screws
for each.
Note: It will be necessary to remove small parts,
such as way wipers and covers, to access the gib
adjustment screws.
•Atleastonceamonth,startthemilland
run all gear-driven components for a few
minutes. This will keep the bearings,
bushings, gears, and shafts well lubricated
and protected from corrosion, especially
during the winter months.
-50-
Page 53
For Machines Mfg. Since 8 /09Model SB1027
SERVICE
Adjusting Leadscrew
Backlash
Leadscrew backlash is the amount the leadscrew
rotates before the attached device begins to
move.
Table Gib &
Adjustment Screw
Figure 58. Table gib and adjustment screw
underneath the left side of the table.
Saddle Gib &
Adjustment Screw
Figure 59. Saddle gib and adjustment screw.
Although the mill is equipped with doublebronzed longitudinal and cross leadscrew nuts to
minimize backlash, leadscrews will always have
a certain amount of backlash that will increase
with normal wear.
Generally, 0.005"–0.010" leadscrew backlash
is acceptable to ensure smooth movement and
reduce the risk of premature thread wear.
However, if you find it necessary to adjust
leadscrew backlash, perform the procedures
listed below.
hammer or rubber mallet on the housing to
knock it loose.
Bearing
Housing
Figure 63. Removing the bearing housing from the
cross leadscrew.
-52-
Page 55
For Machines Mfg. Since 8 /09Model SB1027
5. Loosen the two cap screws on the face of the
leadscrew nut shown in Figure 64.
SERVICE
Belt Tensioning
Power is transferred from the motor to the
spindle with heavy-duty ribbed belts. With
normal use, these belts will gradually stretch
over time. When they do, perform the follow
procedure to re-tension them.
Eliminate workpiece binding; use vise or clamps as
required for proper workpiece alignment control.
3.
Inspect replace stripped or damaged bolts/nuts and
re-tighten with thread locking fluid.
4.
Re-align/replace shaft, pulley, set screw, and key as
required.
5.
Re-tighten/replace mounting bolts in floor; relocate/
shim machine.
6.
Replace dented fan cover or fan.
7.
Replace loose pulley/shaft.
8.
Test by rotating shaft; rotation grinding/loose shaft
requires bearing replacement.
9.
Rebuild gearbox for bad gear(s)/bearing(s).
Page 57
For Machines Mfg. Since 8 /09Model SB1027
!
TROUBLESHOOTING
SymptomPossible CausePossible Solution
Tool slips in collect.
Tool breakage.
Workpiece chatters
or vibrates during
operation.
Table hard to
move.
1.
Collet is not fully drawn into
spindle taper.
2.
Wrong size collet.
3.
Debris on mating surfaces of collet
and spindle.
4.
Excessive depth of cut.
1.
Spindle speed too slow/feed rate too
fast.
2.
Tool getting too hot.
3.
Excessive depth of cut.
1.
Table/saddle/knee locks not tight.
2.
Workpiece not securely clamped to
table or mill vise.
3.
Tool not secure or is damaged.
4.
Spindle speed too fast/feed rate too
slow.
5.
Gibs are too loose.
1.
Table/saddle/knee locks are
tightened down.
2.
Chips have loaded up on the ways.
3.
Ways are dry and in need of
lubrication.
4.
Gibs are too tight.
1.
Snug up the drawbar to fully seat the collet.
2.
Use correct collect for tool shank diameter.
3.
Remove oil and debris from mating surfaces, then
re-install.
4.
Decrease depth of cut and allow chips to clear.
1.
Use correct spindle speed and feed rate (Page 34).
2.
Use coolant; reduce spindle speed/feed rate
(Page 34).
3.
Decrease depth of cut and allow chips to clear.
1.
Tighten all locks on mill that are not associated
with necessary table movement for the operation.
2.
Check that clamping is tight and sufficient for the
operation; make sure mill vise is clamped tight to
table.
3.
Properly secure the tool; replace if damaged.
4.
Use correct spindle speed and feed rate (Page 34).
5.
Properly adjust gibs (Page 50).
1.
Full loosen locks needed for movement.
2.
Frequently clean away chips from the ways that
build up during operation.
3.
Use the one-shot oiler (Page 44).
4.
Properly adjust gibs (Page 50).
Bad surface finish.
Power feed chatters
or grinds during
operation.
1.
Wrong spindle speed/feed rate.
2.
Dull/damaged tool; wrong tool for
operation.
3.
Wrong spindle rotation direction for
tool.
4.
Workpiece not securely clamped to
table or mill vise.
5.
Gibs are too loose.
1.
Brass bevel gear is not meshed with
the drive gear.
2.
Power feed unit is at fault
1.
Use correct spindle speed and feed rate (Page 34).
2.
Sharpen/replace tool; use correct tool for operation.
3.
Check for proper spindle rotation direction for tool.
4.
Check that clamping is tight and sufficient for the
operation; make sure mill vise is clamped tight to
table.
5.
Properly adjust gibs (Page 50).
1.
Remove parts from the power feed side of the
longitudinal leadscrew to ensure the bevel gear is
properly meshed; make sure the ball handle nut is
tight.
2.
Replace.
-55-
Page 58
Model SB1027
1.Shock Hazard: Working on wiring that is
connected to a power source is extremely
dangerous. Touching electrified parts will
result in personal injury including but
not limited to severe burns, electrocution,
or death. Disconnect the power from
the machine before servicing electrical
components!
2.
Wire Connections: All connections must be
tight to prevent wires from loosening during
machine operation. Double-check all wires
disconnected or connected during any wiring
task to ensure tight connections.
3.
Modifications: Using aftermarket parts or
modifying the wiring beyond what is shown
in the diagram may lead to unpredictable
results, including serious injury or fire.
4.
Motor Wiring: The motor wiring shown
in these diagrams is current at the time of
printing, but it may not match your machine.
Always use the wiring diagram inside the
motor junction box.
5.
Circuit Requirements: You MUST follow
the requirements at the beginning of this
manual when connecting your machine to a
power source.
6.
Capacitors/Inverters: Some capacitors and
power inverters store an electrical charge for
up to 10 minutes after being disconnected
from the power source. To reduce the risk of
being shocked, wait at least this long before
working on capacitors.
7.
Wire/Component Damage: Damaged wires
or components increase the risk of serious
personal injury, fire, or machine damage. If
you notice that any wires or components are
damaged while performing a wiring task,
replace those wires or components before
completing the task.
8.
Experiencing Difficulties: If you are
experiencing difficulties understanding the
information included in this section, contact
our Technical Support at (360) 734-1540.
The photos and diagrams included in this section are best viewed in color. You can
see them in color at www.southbendlathe.com.
BLACK
WHITE
GREEN
RED
BLUE
BROWN
G RAY
ORANGE
YEL LOW
YEL LOW
GREEN
PURPLE
PINK
LIGHT
BLUE
BLUE
WHITE
TURQUIOSE
NOTICE:
WIRING DIAGRAM COLOR KEY
ELECTRICAL
For Machines Mfg. Since 8 /09
Electrical Safety Instructions
These pages are accurate at the time of printing. In the constant effort to improve, however, we may
make changes to the electrical systems of future machines. Study this section carefully. If you see
differences between your machine and what is shown in this section, call Technical Support at (360)
734-1540 for assistance BEFORE making any changes to the wiring on the machine.
-56-
Page 59
For Machines Mfg. Since 8 /09Model SB1027
+V
P2
P1
R+R-S+S-1G
PC
A1
A2
ACAMAC
MP
MA
MB
MC
S1S2S3S4S5S6S7
HC
SC
H1
RP
Bk
Bk
600 W
40 Ohm
Thermal
Brake
Resistor
Variable Frequency Drive
Yaskawa V1000
CIMR-VT2A0020BAA
200V 3-Ph 5.5kW/3.7kW
UV
W
6
8
13
7
+
-
12
11
10
R1
T1B1B2
T1
8
13
R1
ELECTRICAL
freq drive wiring
Upper Electrical Panel
To Control
Panel
(Page 59)
Upper Electrical Panel
See Figure 67
To Relay
(Page 58)
To Chassis Ground
To Lower Electrical
To Contactor
(Page 58)
(Page 58)
Panel (Page 58)
To Transformer
To Spindle
Motor
(Page 59)
(Page 58)
-57-
Page 60
Model SB1027
OV
220V
230V
380V
460V
415V
110V
24V
12V
0V
E
Yung-Jeng
Transformer
500VA A009-0392
5A Fuse
2A Fuse
5A Fuse
1A Fuse
Aux Contactor
AB 100F A20
1L1
A1
3L2
5L3
NO13
53NO63NO
54NO64NO
24V Contactor
Allen-Bradley C09-400
1L1
3L2
5L3
NO13
24V Contactor
Allen-Bradley C09-400
24V Relay
Omron MY4I
1
5
3
2
98
4
0 1 2 3 4 5 922 30 34 35
U2
W
2L1 L3
20A Fuse
20A Fuse
2T1
4T2
6T3
8T4
2T1
4T2
6T3
8T4
110V 5-15
Outlets
T
T
R2
R2T2
T2
R
R
R
R
T
T
T
T
2R
0
0
0
0
0
0 1 2 3 4 5 930 34 35L1 L3
30
1
20
20
33
33
5
2
13
13
8
8
3
9
34
35
4
4
0
U2
L1
L3
2122
22
2122
21
21
6-15 Plug
(As Recommended)
1
2
3
4 5
9
21
22
34 35
34
35
R1
T1
R1
T1
7
Ground
L1
L3
G
Hot
Hot
220V
34343535
1R
1R
R
R
R
R
0
A1
A2
A2
U2
W2
W2
0
2
3
Main Power Switch
22
22
21
21
ELECTRICAL
Lower Electrical Panel
For Machines Mfg. Since 8 /09
electrical panel wiring
Lower Electrical Panel
See Figure 67
To Upper Electrical
Panel (Page 57)
To Spindle
Motor
(Page 59)
To
Frequency
Drive
(Page 57)
-58-
To Pump (Page 59)
To Control Panel
(Page 59)
To Cabinet Fan
Page 61
For Machines Mfg. Since 8 /09Model SB1027
2
3
W2
U2
COM
NC
NO
3
NO
4
3
NO
4
3
NO
4
1
NC
2
Emergency
STOP Button
Motor ON Button
Coolant Switch
Spindel Direction
Switch
Spindle
Speed Dial
Spindle
Speed Display
X2
X1
3
NO
4
+–
+–
1
2
2
2
11
11
10
9
76
54
3
54
1
2
3
0
2
9
12
12
10
S. Capacitor
3M 450V
Rd
Rd
Rd
Rd
Yl
Yl
Yl
X1
Y1
Z1
U2
V2
W2
U1
V1
W1
W
W
34
35
V
U
2
2
3
3
Ground
component wiring
ELECTRICAL
control panel wiring
Control Panel Wiring
Control Panel
See Figure 66
To Electrical Panel
& Frequency Drive
(Pages 58–57)
Spindle Motor
220V 3-Phase
See Figure 68
Coolant Pump Motor
220V Single-Phase
See Figure 70
Spindle Brake
See Figure 69
-59-
Page 62
Model SB1027
ELECTRICAL
Electrical Component Pictures
Figure 66. Control panel wiring.Figure 68. Spindle motor wiring.
The safety labels provided with your machine are used to make the operator aware of the
machine hazards and ways to prevent injury. The owner of this machine MUST maintain the
original location and readability of these safety labels. If any label is removed or becomes
unreadable, REPLACE that label before using the machine again. Contact South Bend Lathe Co. at
(360) 734-1540 or www.southbendlathe.com to order new labels.
PARTS
Machine Labels A
-79-
Page 82
Model SB1027
1209
1210
1217
1218
1219
1220
1221
1222
1223
1224
REFPART #DESCRIPTIONREFPART #DESCRIPTION
1209 PSBLABEL02HL DISCONNECT WARNING LABEL1220 PSB10271220SPEED RANGE LABEL
1210PSBLABEL13HL CLOSE DOOR WARNING LABEL1221PSB10271221220V 1PH LABEL
This quality product is warranted by South Bend Lathe Company to the original buyer for one year
from the date of purchase. This warranty does not apply to consumable parts, or defects due to any
kind of misuse, abuse, negligence, accidents, repairs, alterations or lack of maintenance. We do not
reimburse for third party repairs. In no event shall we be liable for death, injuries to persons or
property, or for incidental, contingent, special or consequential damages arising from the use of our
products.
We do not warrant or represent that this machine complies with the provisions of any law, act, code,
regulation, or standard of any domestic or foreign government, industry, or authority. In no event
shall South Bend’s liability under this warranty exceed the original purchase price paid for this
machine. Any legal actions brought against South Bend Lathe Company shall be tried in the State of
Washington, County of Whatcom.
This is the sole written warranty for this machine. Any and all warranties that may be implied by
law, including any merchantability or fitness, for any purpose, are hereby limited to the duration of
this warranty. To take advantage of this warranty, contact us by mail or phone to give us the details
of the problem you are having.
Thank you for your business and continued support.
Page 84
South Bend Lathe Co.
P.O. Box 2027
Bellingham, WA 98227
PHONE: (360) 734-1540 (Administrative Offi ces)
FAX: (360) 676-1075 (International)
FAX: (360) 734-1639 (USA only)
southbendlathe.com
Printed In Taiwan#JBTS12256
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