Baileigh Industrial BBG-8 Service manual

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OPERATING INSTRUCTIONS AND
PARTS MANUAL
8-INCH BENCH GRINDER
MODEL: BBG-8
© 2022 Baileigh Industrial
REPRODUCTION OF THIS MANUAL IN ANY FORM WITHOUT WRITTEN APPROVAL OF BAILEIGH INDUSTRIAL IS
PROHIBITED. Baileigh Industrial does not assume and hereby disclaims any liability for any damage or loss caused
by an omission or error in this Operator’s Manual, resulting from accident, negligence, or other occurrence.
Edition 1 07/2022
Baileigh Industrial
P.O. Box 531
Manitowoc, WI 54221-0531
Phone: [phone]
Fax: [phone]
[email protected]

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Table of Contents
THANK YOUI & WARRANTY .............................................................................................................. 3
GENERAL NOTES ............................................................................................................................... 5
WARNINGS .......................................................................................................................................... 6
1.0 Introduction ................................................................................................................................... 8
2.0 Description .................................................................................................................................... 8
3.0 Specifications ............................................................................................................................... 9
4.0 Setup and Assembly .................................................................................................................. 11
4.1 Shipping Contents ................................................................................................................. 11
4.2 Unpacking and Clean Up ....................................................................................................... 11
4.3 Tools Required for Assembly ................................................................................................ 11
4.4 Mounting the Grinder ............................................................................................................. 12
4.5 Exhaust Ports ........................................................................................................................ 12
4.6 Assembling Eye Shield Brackets to Spark Guards ................................................................ 12
4.7 Installing Spark Guards/Brackets .......................................................................................... 12
4.8 Installing Eye Shields ............................................................................................................ 12
4.9 Installing Tool Rests .............................................................................................................. 13
4.10 Grinding Wheel Selection .................................................................................................... 13
4.11 Ring Text ............................................................................................................................. 13
4.12 Grinding Wheel Installation .................................................................................................. 14
4.13 Wheel Balancing ................................................................................................................. 14
4.13.1 Adjusting Concentricity ............................................................................................ 14
4.13.2 Correcting Side-to-Side Wobble .............................................................................. 14
5.0 Electrical Connections ............................................................................................................... 15
5.1 Grounding Instructions .......................................................................................................... 15
5.2 Extension Cords .................................................................................................................... 16
6.0 Adjustments ................................................................................................................................ 16
6.1 Eye Shield Tilt Adjustment ..................................................................................................... 16
6.2 Spark Guards ........................................................................................................................ 16
6.3 Tool Reset Adjustment .......................................................................................................... 16
7.0 Operation ..................................................................................................................................... 17
7.1 Switch .................................................................................................................................... 17
7.2 Precautions ............................................................................................................................ 17
8.0 Maintenance ................................................................................................................................ 17
8.1 Care of Grinding Wheels ....................................................................................................... 17
8.2 Changing Wheels .................................................................................................................. 17
8.3 Cleaning ................................................................................................................................ 18
8.4 Lubrication ............................................................................................................................. 18
9.0 Optional Accessory .................................................................................................................... 18
10.0 Troubleshooting the BBG-8 ..................................................................................................... 19
11.0 Replacement Parts ................................................................................................................... 20
11.1.1 BBG-8 Bench Grinder-Exploded Views ................................................................... 21
11.1.2 BBG-8 Bench Grinder-Parts List ............................................................................. 22
12.0 Electrical Connections ............................................................................................................. 24

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THANK YOU & WARRANTY
Many thanks for the confidence you have shown in us with the purchase of your new Baileigh Industrial
machine. This manual has been prepared for the owner and operators of a Baieigh Industrial BBG-8
Bench Grinder to promote safety during installation, operation, and maintenance procedures. Please read
and understand the information contained in these operating instructions and the accompanying
documents. To obtain maximum life and efficiency from your machine, and to use the machine safely, read
this manual thoroughly and follow instructions carefully.
Inspection & Acceptance. Buyer shall inspect all Goods within ten (10) days after receipt thereof. Buyer’s
payment shall constitute final acceptance of the Goods and shall act as a waiver of the Buyer’s rights to
inspect or reject the goods unless otherwise agreed. If Buyer rejects any merchandise, Buyer must first
obtain a Returned Goods Authorization (“RGA”) number before returning any goods to Seller. Goods
returned without an RGA will be refused. Seller will not be responsible for any freight costs, damages to
goods, or any other costs or liabilities pertaining to goods returned without an RGA. Seller shall have the
right to substitute a conforming tender. Buyer will be responsible for all freight costs to and from Buyer and
repackaging costs, if any, if Buyer refuses to accept shipment. If Goods are returned in unsalable condition,
Buyer shall be responsible for full value of the Goods. Buyer may not return any special-order Goods. Any
Goods returned hereunder shall be subject to a restocking fee equal to 30% of the invoice price.
Specifications. Seller may, at its option, make changes in the designs, specifications, or components of
the Goods to improve the safety of such Goods, or if in Seller’s judgment, such changes will be beneficial
to their operation or use. Buyer may not make any changes in the specifications for the Goods unless Seller
approves of such changes in writing, in which event Seller may impose additional charges to implement
such changes.
Limited Warranty. Seller warrants to the original end-user that the Goods manufactured or provided by
Seller under this Agreement shall be free of defects in material or workmanship for a period of twelve (12)
months from the date of purchase, provided that the Goods are installed, used, and maintained in
accordance with any instruction manual or technical guidelines provided by the Seller or supplied with the
Goods, if applicable. The original end-user must give written notice to Seller of any suspected defect in the
Goods prior to the expiration of the warranty period. The original end-user must also obtain a RGA from
Seller prior to returning any Goods to Seller for warranty service under this paragraph. Seller will not accept
any responsibility for Goods returned without a RGA. The original end-user shall be responsible for all costs
and expenses associated with returning the Goods to Seller for warranty service. In the event of a defect,
Seller, at its sole option, shall repair or replace the defective Goods or refund to the original end-user the
purchase price for such defective Goods. Goods are not eligible for replacement or return after a period of
10 days from date of receipt. The foregoing warranty is Seller’s sole obligation, and the original end-user’s
exclusive remedy, with regard to any defective Goods. This limited warranty does not apply to: (a) die sets,
tooling, and saw blades; (b) periodic or routine maintenance and setup, (c) repair or replacement of the
Goods due to normal wear and tear, (d) defects or damage to the Goods resulting from misuse, abuse,
neglect, or accidents, (f) defects or damage to the Goods resulting from improper or unauthorized
alterations, modifications, or changes; and (f) any Goods that has not been installed and/or maintained in
accordance with the instruction manual or technical guidelines provided by Seller.
EXCLUSION OF OTHER WARRANTIES. THE FOREGOING LIMITED WARRANTY IS IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED. ANY AND ALL OTHER EXPRESS, STATUTORY, OR
IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE ARE EXPRESSLY DISCLAIMED.
NO WARRANTY IS MADE WHICH EXTENDS BEYOND THAT WHICH IS EXPRESSLY CONTAINED
HEREIN.
Limitation of Liability. IN NO EVENT SHALL SELLER BE LIABLE TO BUYER OR ANY OTHER PARTY FOR
ANY INCIDENTIAL, CONSEQUENTIAL OR SPECIAL DAMAGES (INCLUDING, WITHOUT LIMITATION, LOST
PROFITS OR DOWN TIME) ARISING FROM OR IN MANNER CONNECTED WITH THE GOODS, ANY
BREACH BY SELLER OR ITS AGENTS OF THIS AGREEMENT, OR ANY OTHER CAUSE WHATSOEVER,
WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY OF LIABILITY. BUYER’S REMEDY
WITH RESPECT TO ANY CLAIM ARISING UNDER THIS AGREEMENT IS STRICTLY LIMITED TO NO MORE
THAN THE AMOUNT PAID BY THE BUYER FOR THE GOODS.

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Force Majeure. Seller shall not be responsible for any delay in the delivery of, or failure to deliver, Goods
due to causes beyond Seller’s reasonable control including, without limitation, acts of God, acts of war or
terrorism, enemy actions, hostilities, strikes, labor difficulties, embargoes, non-delivery or late delivery of
materials, parts and equipment or transportation delays not caused by the fault of Seller, delays caused by
civil authorities, governmental regulations or orders, fire, lightening, natural disasters or any other cause
beyond Seller’s reasonable control. In the event of any such delay, performance will be postponed by such
length of time as may be reasonably necessary to compensate for the delay.
Installation. If Buyer purchases any Goods that require installation, Buyer shall, at its expense, make all
arrangements and connections necessary to install and operate the Goods. Buyer shall install the Goods
in accordance with any Seller instructions and shall indemnify Seller against any, and all damages,
demands, suits, causes of action, claims and expenses (including actual attorneys’ fees and costs) arising
directly or indirectly out of Buyer’s failure to properly install the Goods.
Work By Others; Safety Devices. Unless agreed to in writing by Seller, Seller has no responsibility for
labor or work performed by Buyer or others, of any nature, relating to design, manufacture, fabrication, use,
installation, or provision of Goods. Buyer is solely responsible for furnishing and requiring its employees
and customers to use all safety devices, guards and safe operating procedures required by law and/or as
set forth in manuals and instruction sheets furnished by Seller. Buyer is responsible for consulting all
operator manuals, ANSI or comparable safety standards, OSHA regulations and other sources of safety
standards and regulations applicable to the use and operation of the Goods.
Remedies. Each of the rights and remedies of Seller under this Agreement is cumulative and in addition to
any other or further remedies provided under this Agreement or at law or equity.
Attorney’s Fees. In the event legal action is necessary to recover monies due from Buyer or to enforce
any provision of this Agreement, Buyer shall be liable to Seller for all costs and expenses associated
therewith, including Seller’s actual attorney fees and costs.
Governing Law/Venue. This Agreement shall be construed and governed under the laws of the State of
Wisconsin, without application of conflict of law principles. Each party agrees that all actions or proceedings
arising out of or in connection with this Agreement shall be commenced, tried, and litigated only in the state
courts sitting in Manitowoc County, Wisconsin or the U.S. Federal Court for the Eastern District of
Wisconsin. Each party waives any right it may have to assert the doctrine of “forum non conveniens” or to
object to venue to the extent that any proceeding is brought in accordance with this section. Each party
consents to and waives any objection to the exercise of personal jurisdiction over it by courts described in
this section. Each party waives to the fullest extent permitted by applicable law the right to a trial by jury.
Summary of Return Policy.
• 10 Day acceptance period from date of delivery. Damage claims and order discrepancies will not be
accepted after this time.
• You must obtain a Baileigh Industrial issued RGA number PRIOR to returning any materials.
• Returned materials must be received at Baileigh Industrial in new condition and in original packaging.
• Altered items are not eligible for return.
• Buyer is responsible for all shipping charges.
• A 30% re-stocking fee applies to all returns.
Baileigh Industrial makes every effort to ensure that our posted specifications, images, pricing, and product
availability are as correct and timely as possible. We apologize for any discrepancies that may occur.
Baileigh Industrial reserves the right to make any, and all changes deemed necessary in the course of
business including but not limited to pricing, product specifications, quantities, and product availability.
For Customer Service & Technical Support:
Please contact one of our knowledgeable Sales and Service team members at:
[phone] or e-mail us at [e-mail]

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GENERAL NOTES
After receiving your equipment, remove the protective container. Do a complete visual inspection, and if
damage is noted, photograph it for insurance claims and contact your carrier at once, requesting
inspection. Also contact Baileigh Industrial and inform them of the unexpected occurrence. Temporarily
suspend installation.
Take necessary precautions while loading / unloading or moving the machine to avoid any injuries.
Your machine is designed and manufactured to work smoothly and efficiently. Following proper
maintenance instructions will help ensure this. Try and use original spare parts, whenever possible, and
most importantly; DO NOT overload the machine or make any modifications.
Note: This symbol refers to useful information throughout the manual.
WARNING: Drilling, sawing, sanding,
or machining wood products generates
wood dust and other substances known to
the State of California to cause cancer.
Avoid inhaling dust generated from wood
products or use a dust mask or other
safeguards for personal protection.
Wood products emit chemicals known to
the State of California to cause birth
defects or other reproductive harm. For
more information go to
http://www.p65warnings.ca.gov/wood
WARNING: This product can expose
you to chemicals including lead and
cadmium which are known to the State of
California to cause cancer and birth
defects or other reproductive harm, and
phthalates which are known to the State of
California to cause birth defects or other
reproductive harm. For more information
go to http://www.p65warnings.ca.gov

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Warni and understand the entire owner’s manual before attempting assembly or operation.
1. Read and understand the entire owner's manual before attempting assembly or operation.
2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with
all of these warnings may cause serious injury.
3. Replace warning labels if they become obscured or removed.
4. Do not use this grinder for other than its intended use. If used for other purposes, Baileigh Industrial
disclaims any real or implied warranty and holds itself harmless from any injury that may result from
that use.
5. Always use the grinder’s eye shields. In addition, wear ANSI Z87.1 approved safety glasses, or a face
shield. (Everyday eyeglasses only have impact resistant lenses; they are NOT safety glasses.)
6. Before operating grinder, remove tie, rings, watches and other jewelry, and roll sleeves up past elbows.
Do not wear loose-fitting clothing. Confine long hair.
7. Wear protective clothing such as apron or safety shoes, where the grinding activity presents a hazard
to the operator.
8. Wear ear protectors (plugs or muffs) if the particular work requires it.
9. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
10. Make certain the switch is in the OFF position before connecting the machine to the power supply.
11. Make certain the machine is properly grounded.
12. Make all machine adjustments or maintenance with the machine unplugged from the power source.
13. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting
wrenches are removed from the grinder before turning it on.
14. Keep safety guards in place at all times when the machine is in use. If removed for maintenance
purposes, use extreme caution and replace the guards immediately after completion of maintenance.
15. Check damaged parts. Before further use of the machine, a guard or other part that is damaged should
be carefully checked to determine that it will operate properly and perform its intended function. Check
for alignment of moving parts, binding of moving parts, breakage of parts, mounting and any other
conditions that may affect its operation. A guard or other part that is damaged should be properly
repaired or replaced.
16. Provide for adequate space surrounding work area and non-glare, overhead lighting.
17. Keep the floor around the machine clean and free of scrap material, oil and grease.
18. Keep visitors a safe distance from the work area. Keep children away.
19. Make your workshop child proof with padlocks, master switches or by removing starter keys.
20. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are
careless acts that can result in serious injury.
21. Maintain a balanced stance at all times so that you do not fall into the tool or other moving parts. Do
not overreach or use excessive force to perform any machine operation.
22. Disconnect grinder before servicing and when changing abrasive wheels.
23. Use recommended accessories. The use of improper accessories may cause risk of injury to persons.
24. Turn off the machine before cleaning. Use a brush or compressed air to remove chips or debris — do
not use your hands.

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25. Never leave the grinder running unattended. Turn power off and do not leave machine until wheels
come to a complete stop.
26. Remove loose items and unnecessary work pieces from the area before starting the grinder.
27. Don’t use in dangerous environment. Don’t use power tools in damp or wet location or expose them to
rain. Keep work area well lighted.
28. Inspect abrasive wheels for cracks or other forms of damage. Perform a “ring test” to check wheel
integrity (see section 6.10). Do not use a faulty or damaged wheel.
29. Verify that maximum RPM of abrasive wheels is compatible with speed of grinder.
30. Allow abrasive wheels to reach full RPM before starting the grinding operation.
31. Do not crowd the work so that the wheels slow.
32. Tool rest should be adjusted less than 1/8” from wheel surface.
33. Do not grind on side of wheel; do all work on the grinding face or edge near the tool rest.
34. Do not grind aluminum or magnesium, as these may pose a fire hazard.
Familiarize yourself with the following safety notices used in this manual:
This means that if precautions are not heeded, it may result in minor injury and/or
possible machine damage.
This means that if precautions are not heeded, it may result in serious injury or possibly
even death.
- - SAVE THESE INSTRUCTIONS - -

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1.0 Introduction
This manual is provided by Baileigh Industrial covering the safe operation and maintenance procedures for
a Model BBG-8 Bench Grinder. This manual contains instructions on assembly, safety precautions, general
operating procedures, maintenance instructions and parts breakdown. This machine has been designed
and constructed to provide consistent, long-term operation if used in accordance to instructions set forth in
this manual.
If there are any questions or comments, please contact either your local supplier or Baileigh Industrial.
Baileigh Industrial can also be reached at our website: www.baileigh.com.
2.0 Description
The Baileigh Industrial BBG-8 Bench Grinder is designed primarily for woodworkers; the slow speed is
optimal for grinding and sharpening common tool steels – lathe turning chisels, gouges, knives, plane irons,
carving tools, and more. Abrasive wheels are protected by cast iron guards. The large tool rests are
adjustable, with a tilt angle scale and incised lines to help align tools square to the wheel. A steel spark
guard and plexiglass eye shield provide safety (personal eye protection is still required). Rubber foot pads
prevent sliding. Alternatively, mounting holes are provided in the base for securing the unit to a bench or
stand. Heavy-duty machined flanges keep the grinding wheel true and reduce runout.
The operator is encouraged to familiarize him/herself with ANSI B7.1 – Safety Requirements for Use, Care
and Protection of Abrasive Wheels.
Retain this manual for future reference. If the grinder transfers ownership, the manual should accompany
it.
Read and understand the entire contents of this manual before attempting
assembly or operation! Failure to comply may cause serious injury!

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3.0 Specifications
Model Number: BBG-8
Motor and Electrical
Motor Type
Induction, capacitor start, with centrifugal switch
Horsepower
1/2 HP (373W)
Phase / Voltage / Cycle
Single / 115V / 60Hz
Full Load Amps
6.5 A
Motor Speed
1725 RPM
Power Transfer
Direct drive
Power Cable Size / Length
16AWG / 6 ft. (182cm)
Recommended Circuit Size
(Subject to local/national electrical codes)
15 A
Arbor and Grinding Wheels
Arbor Diameter
5/8” (16mm)
Wheel Size (dia. X width)
8” x 1” (16 x 25.4mm)
Wheel Bore
5/8” (16mm)
Wheel Flange Diameter
2.875” (72.6mm)
Wheel Speed
1725 RPM
Arbor Nut Maximum Tightening Torque
10.12 lbf-ft (140 kgf-cm)
Distance Bench Top to Arbor Centerline
6.18” (157mm)
Grinding Wheel Grits
120 (Left), 60 (Right)
Tool Rests
Tilt Angle
45° forward
Distance to Wheel
Adjustable
Materials
Arbor
Steel
Base
Cast Iron
Body & Wheel Guards
Cast Iron and Aluminum
Wheel Flanges
Steel
Tool Rests
Cast Iron with Milled Surface
Eye Shields
Clear Acrylic
Spark Guards
Steel
Knobs
Polymide
Dimensions
Mounting Hole Centers
7.25” (184mm)
Mounting Hole Diameters
3/8” (9.5mm)
Footprint (W x D)
8-1/4” x 6-1/4” (210 x 158mm)
Overall Dimensions, Assembled (W x D x H)
20-1/4” x 12” x 12-1/2” (514 x 305 x 318mm)
Shipping Carton Dimensions (W x D x H)
22-1/4” x 14-3/8” x 14” (565 x 365 x 358mm)

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Dust/Swarf Collection
Dust Port Outside Diameter
2” (50mm)
Recommended Minimum Extraction Volume
350 CFMa
Weights
Net
56 lb. (25.26 kg)
Shipping
60 lb. (27.4 kg)
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, Baileigh Industrial reserves the right to change specifications at any time and
without prior notice, without incurring obligations.

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4.0 Setup and Assembly
4.1 Shipping Contents
Carton Contents (see Figure 1)
Qty. Item
1 Bench grinder (not shown)
1 Spark guard – Left (A)
2 Lock knob (B)
1 Spark guard – Right (C)
1 Eye shield bracket – Left (D)
2 Cross head screw 1/4" x 1/2" (E)
1 Eye shield bracket – Right (F)
2 Eye shield plate (G)
4 Socket head cap screw 5/16” x 3/4” (H)
6 Flat washer 5/16" (J)
4 Pan head screw 3/16” x 3/8” (K)
4 Hex head screw 1/4” x 3/8” (L)
6 Flat washer 1/4” (M)
2 Lock washer 1/4" (N)
1 Tool rest – Left (O)
1 Tool rest – Right (P)
1 Tool rest bracket – Left (Q)
1 Tool rest bracket – Right (R)
2 Lock knob (S)
2 Eye shield (T)
4.2 Unpacking and Clean Up
Remove all contents from shipping carton. Check
for shipping damage. If any is found report it to
your distributor.
Do not discard carton or packing material until
grinder is assembled and running satisfactorily.
Compare contents of shipping carton with the
contents list above. Report any shortages to your
distributor. (Check grinder first to verify if any
parts have been pre-assembled.)
4.3 Tools Required for Assembly
1/4" hex key
10mm wrench
1” wrench (or adjustable wrench)
Cross-point screwdriver #1 or #2
Your bench grinder requires only the assembly of
the eye shields, tool rests, and grinding wheels.
Additional tools may be needed for fastening the
grinder to a workbench or stand. For your safety,
do not plug the grinder into a power source until
all assembly and adjustments are complete.
Figure 1

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4.4 Mounting the Grinder
The grinder is provided with rubber pads to help
prevent movement on a bench. For best results,
however, it is recommended the grinder be bolted
to the work surface or a grinder stand (fasteners
not included).
1. Align mounting holes on grinder with
predrilled holes in a bench or grinder stand.
Refer to Figure 2 for hole spacing.
2. Insert bolts through the holes and tighten
using washers and nuts.
Figure 2: Mounting Holes
4.5 Exhaust Ports
A collection system designed for metal dust and
swarf can be connected to the two exhaust ports
at rear of grinder.
Do not connect a dust
collector designed for wood dust and
shavings to the bench grinder, as this can
pose a fire hazard. Use only a dust capture
system designed for metal dust and swarf.
4.6 Assembling Eye Shield Brackets
to Spark Guards
Refer to Figure 3.
Note: Spark guards (A) and Brackets (D) are
marked L for left side assembly and R for right
side assembly.
1. Assemble the left spark guard (A) and eye
shield bracket (D) using Figure 3 as a guide.
Make sure spark guard and bracket are
marked L.
2. Install the right assembly in the same
manner.
Figure 3: Brackets to Spark Guards
4.7 Installing Spark Guards/Brackets
Refer to Figure 4.
1. Install the left spark guard and bracket to the
left wheel housing with two 1/4 x 3/8 hex cap
screws (L) and two 1/4 flat washers (M).
2. The spark guard should be adjusted to within
1/16" of the grinding wheel surface or other
accessory being used.
3. Install the right spark guard and bracket in the
same manner.
Note: As the wheel wears down, the spark
guards should be readjusted to maintain the 1/16"
distance from wheel.
4.8 Installing Eye Shields
Refer to Figure 4.
The eye shields (T) are identical and will fit on
either side of the grinder.
1. Insert two 3/16 x 3/8 pan head screws (K)
through the eye shield bracket, eye
shield (T), and eye shield plate (G) which
contains threaded holes.
2. Tighten the screws (K).

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4.9 Installing Tool Rests
Refer to Figure 4.
Note: There is a left and a right tool rest. Refer to
Figure 4 to ensure that you install them correctly.
(The beveled edge of tool rest faces the wheel.)
1. Install the left tool rest bracket (Q) by
threading two 5/16 x 3/4 hex cap screws (H)
through two 5/16 flat washers (J) and the tool
rest bracket (Q) into the wheel housing.
2. Place the tool rest (O) over the bracket (Q) so
that the scale is seen through the cutout.
Secure with knob (S).
3. Install the right tool rest in the same manner.
The tool rests must not contact the grinding wheel
but should ideally be adjusted to within 1/16” of
the wheel, depending upon the type of tool being
ground. As a wheel wears down, the tool rest
should be readjusted to maintain this clearance.
Figure 4: Completion of Assembly
4.10 Grinding Wheel Selection
Abrasive wheels are generally designed around
five characteristics: material, wheel grade, grain
size, grain spacing, and type of bond. These
codes will usually be listed on a wheel’s label.
General-use silicon-carbide (carborundum)
wheels can overheat and ruin the temper of high-
quality tool steel. For sharpening woodworking
tools, an aluminum oxide wheel is recommended.
Always inspect an abrasive wheel before
mounting. (See section 4.11, Ring test.) A wheel
that is cracked or damaged in any way must not
be used. Maximum operating speed – listed on
the abrasive wheel label – must meet or exceed
1725 RPM (grinder spindle speed).
4.11 Ring Test
An internal defect, such as a crack or void, may
not be apparent by visual inspection alone.
Before installing a grinding wheel, check its
internal integrity by performing a simple “ring
test”.
1. Suspend wheel from the hole by a small pin
or finger.
2. Gently tap the flat side of the wheel with a
non-metallic object, such as a wood dowel or
the handle of a screwdriver. Tap about 45° to
each side of vertical center line, and about 1”
to 2” from the periphery. Then rotate wheel
45° and repeat.
3. A good wheel will "ring"; a defective wheel will
"thud", indicating cracks or other internal
compromise. Discard any wheel that does
not "ring".
A cracked or otherwise
damaged grinding wheel can break apart and,
if unguarded, exit grinder at high velocity
causing injury. Regularly inspect wheels for
damage, and make sure all guards are in
position.

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4.12 Grinding Wheel Installation
Refer to Figure 5:
1. Unplug grinder from power source.
2. Move tool rest and eye shield out of the way.
3. Remove wheel guard.
4. Remove arbor nut (1” wrench) and outer
flange. (NOTE: The left arbor nut has left-
hand threads; rotate clockwise to loosen.)
5. Make sure that inner flange is seated
properly against shoulder of arbor.
6. Install wheel, outer flange and nut. Make
snug the nut using the 1” wrench – do not
overtighten, as this may cause deflection of
the flanges.
7. Repeat for opposite side.
8. Inspect wheel for proper balance, as
described in section 6.13. An out-of-balance
wheel will result in excessive vibration and
poor surface finish of tools.
Figure 5: Wheel Mounting
4.13 Wheel Balancing
With the grinder unplugged from the power
source, and arbor nuts snugged down, rotate
wheels by hand and observe their motion.
A grinding wheel has proper balance when:
1. The outside face of the wheel spins true and
round; that is, its circumference rotates
concentric to the arbor.
2. There is no side-to-side wobble.
The operator who takes time to patiently perform
needed adjustments will be rewarded by wheels
running true, and accurate grinding of work
pieces.
4.13.1 Adjusting Concentricity
If the outside face is not rotating concentric to
arbor, try shifting the wheel closer to arbor
centerline before tightening the nut.
See A, Figure 6.
Another method of achieving concentricity is the
use of a wheel dresser (not provided). “Dressing”
is the removal of the current layer of abrasive to
expose a fresh surface. A wheel dresser is also
used to “true” a wheel; that is, to make the
grinding surface parallel to the tool rest, so the
entire wheel presents an even surface to the work
piece. Proper use of a wheel dresser will
eliminate high spots and result in concentric
rotation about the arbor, as well as minimize
vibration. (Always follow the wheel dresser
manufacturer’s instructions.)
Figure 6: Wheel Balancing
4.13.2 Correcting Side-to-Side Wobble
1. Loosen nut and rotate the outer flange a little.
Snug the nut and spin the wheel by hand to
check.
2. If wobble still exists, continue repeating step
1, rotating outer flange incrementally in the
same direction. See B, Figure 6. Make sure
to keep the wheel in the same position each
time.
3. If complete rotation of outer flange has
proved ineffective, remove nut, outer flange,
and wheel (keep wheel in same orientation
by placing a pencil mark on it somewhere for
reference). Then rotate inner flange about
90° and repeat the above steps for the outer
flange.
4. Continue this combination of flange
movements until the wobble is eliminated.

15
If required, a shim made of thick paper or card
stock may be placed between flange and wheel
side.
NOTE: Very slight wobble may still exist at spin-
up and spin-down, but will not affect normal
speed operation.
If excessive wobble still exists after performing
the above remedies, consult section 12.0 for
further possibilities. When troubleshooting, keep
in mind these possible sources of imbalance:
1. Wheel not concentric.
2. Wheel wobbles side-to-side.
3. Wheel arbor bushing has play in it.
4. Wheel is poor quality.
5. Flanges are warped.
5.0 Electrical Connections
The BBG-8 Bench Grinder is rated at 115-volt
power. The grinder is supplied with a plug
designed for use on a circuit with a 110-120V
grounded outlet that looks like the one pictured in
A, Figure 7.
Before connecting to power source, be sure
switch is in off position.
It is recommended the grinder be connected to a
15-amp circuit with a 15 amp circuit breaker or
time-delay fuse marked “D”. Local codes take
precedence over recommendations.
Figure 7: Plug and Receptacle
5.1 Grounding Instructions
1. All Grounded, Cord-connected Tools:
In the event of a malfunction or breakdown,
grounding provides a path of least resistance for
electric current to reduce the risk of electric
shock. This tool is equipped with an electric cord
having an equipment-grounding conductor and a
grounding plug. The plug must be plugged into a
matching outlet that is properly installed and
grounded in accordance with all local codes and
ordinances.
Do not modify the plug provided – if it will not fit
the outlet, have the proper outlet installed by a
qualified electrician.
Improper connection of the equipment-grounding
conductor can result in a risk of electric shock.
The conductor with insulation having an outer
surface that is green with or without yellow stripes
is the equipment-grounding conductor. If repair or
replacement of the electric cord or plug is
necessary, do not connect the equipment-
grounding conductor to a live terminal.
Check with a qualified
electrician or service personnel if the
grounding instructions are not completely
understood, or if in doubt as to whether the
tool is properly grounded. Failure to comply
may cause serious or fatal injury.
Use only 3-wire extension cords that have 3-
prong grounding plugs and 3-pole receptacles
that accept the tool's plug.
Repair or replace damaged or worn cord
immediately.
2. Grounded, cord-connected tools intended for
use on a supply circuit having a nominal rating
less than 150 volts:
This tool is intended for use on a circuit that has
an outlet that looks like the one illustrated in A,
Figure 7. An adapter, shown in B, Figure 7, may
be used to connect this plug to a 2-pole
receptacle if a properly grounded outlet is not
available. The temporary adapter should be used
only until a properly grounded outlet can be
installed by a qualified electrician. This adapter is
not permitted in Canada. The green-colored rigid
ear, lug, and the like, extending from the adapter
must be connected to a permanent ground such
as a properly grounded outlet box.

16
5.2 Extension Cords
USE PROPER EXTENSION CORD. Use only
three-wire extension cords that have three-prong
grounding type plugs and three-prong
receptacles that accept the tool's plug.
Make sure your extension cord is in good
condition. When using an extension cord, be sure
to use one heavy enough to carry the current your
product will draw. An undersized cord will cause
a drop in line voltage resulting in loss of power
and overheating. Table 1 shows correct size to
use depending on cord length and nameplate
ampere rating. If in doubt, use the next heavier
gauge. The smaller the gauge number, the
heavier the cord.
Amp
Rating
Volts
Total length of cord in feet
120
240
25
50
50
100
100
200
150
300
AWG
0 - 6
18
16
16
14
6 - 10
18
16
14
12
10 - 12
16
16
14
12
12 - 16
14
12
Not
Recommended
Table 1: Extension Cord Recommendations
6.0 Adjustments
Disconnect saw from power
source before making adjustments.
6.1 Eye Shield Tilt Adjustment
1. Loosen lock knob (B, Figure 8).
2. Adjust eye shield (T) to desired tilt angle.
3. Tighten lock knob (B).
6.2 Spark Guards
As the wheel wears down, the spark guards must
be readjusted to maintain 1/16" distance from the
wheel.
To adjust:
1. Loosen two hex cap screws (L, Figure 8) with
a 10mm wrench.
2. Slide the spark guard to 1/16" distance from
grinding wheel surface.
3. Tighten screws (L).
Figure 8: Eye Shield and Tool Rest Adjustment
6.3 Tool Rest Adjustment
As the wheel wears down, the tool rest must be
re-adjusted to maintain a 1/16" to 1/8” distance.
1. Loosen two hex cap screws (H, Figure 8) with
a 12mm wrench.
2. Slide tool rest bracket (Q) as needed.
3. Tighten screws (H).

17
7.0 Operation
A bench grinder is designed for hand-grinding
operations such as sharpening chisels,
screwdrivers, drill bits, removing excess metal,
and smoothing metal surfaces.
A Medium Grain Abrasive Grinding Wheel is
suitable for rough grinding where a considerable
amount of metal must be removed or when
obtaining a smooth finish is not important.
A Fine Grain Abrasive Grinding Wheel should be
used for sharpening tools to close size tolerances
because it removes metal more gradually for
precision grinding and gives work a smooth finish.
Do not operate this grinder
without all guards and shields in place and in
working order. Always use approved safety
glasses or face shields. Failure to comply may
cause serious injury.
7.1 Switch
The toggle switch guard will accept a padlock, as
shown in Figure 9. To safeguard the grinder from
unauthorized operation and accidental starting by
young children, use of a padlock (not provided) is
highly recommended. Place the key in a location
inaccessible to children and others not qualified
to use the tool.
Figure 9 – Switch Lockout (Padlock not
Provided)
7.2 Precautions
Before starting the grinder, turn the wheels by
hand to verify they are clear of obstructions and
will turn freely. Tool rests and spark guards
should not touch the wheel.
Adjust spark arrestor, eye shield, and tool rest
into proper positions. Stand to one side of the
wheel paths, and turn on the grinder. Allow it to
reach full running speed before beginning
operation.
Keep a steady, moderate pressure on the
workpiece and keep it moving at an even pace for
smooth grinding. Pressing too hard overheats the
motor and prematurely wears down the grinding
wheels. Note the original bevel angle on the item
to be sharpened and try to maintain the same
shape. The tilt scale on the tool rest will aid in
establishing this angle. The grinding wheel
should rotate into the object being sharpened.
Keep a tray filled with water and dip your work
into it regularly to prevent overheating.
Overheating can weaken metals.
Do not use the side of the grinding wheel; this
puts dangerous stress on the wheel.
When the wheel becomes loaded or dull, use an
approved grinding wheel dresser and dress the
wheel face.
Keep tool rest and spark guard to within 1/16" of
the grinding wheel. See Adjustment section to
adjust.
8.0 Maintenance
Always disconnect power to
the machine before performing maintenance.
Failure to do this may result in personal
injury.
For safety, turn the switch to OFF and remove
plug from the power source outlet before
adjusting or servicing the bench grinder. If the
power cord is worn, cut or damaged in any way,
have it replaced immediately.
8.1 Care of Grinding Wheels
In normal use, grinding wheels may become
cracked, grooved, rounded at the edges, chipped,
out of true or loaded with foreign material.
Cracked wheels should be replaced
immediately. While any of the other conditions
can be remedied with a dressing tool (available at
most hardware stores), new wheels sometimes
require dressing to make them round.
8.2 Changing Wheels
If you must replace a wheel be sure to obtain one
with a safe rated speed at least as high as the NO
LOAD RPM marked on the grinder's nameplate.
Table 2 shows correct dimensions for the
replacement wheel.

18
Wheel
Diameter
Maximum
width
Center
hole
BBG-8
8”
1"
5/8”
Table 2
Test new wheels for cracks and maintain the
existing sequence of retaining hardware. Be sure
the grinder is unplugged before attempting
repairs.
To change a wheel (refer to Figure 5):
1. Disconnect grinder from power source.
2. Move spark guard and tool rest away from the
wheel.
3. Remove the guard cover using a Phillips or
flathead screwdriver.
4. Stabilize the wheel by holding the opposite
wheel firmly.
5. Unscrew the arbor nut with a 1" wrench.
Note: Turn the locking nut on the right-hand
wheel counterclockwise to loosen. Turn the
locking nut on the left-hand wheel clockwise
to loosen.
6. Remove the outer flange and wheel.
7. Clean flanges. Check the flanges to make
sure they are flat. Wheel flanges that are not
flat will cause the wheel to wobble.
8. Install the inner flange, wheel, outer flange,
and nut on the arbor. Tighten the nut. Do not
over tighten – this may cause the wheel to
crack, or the flanges to bend.
9. Replace the guard cover. Adjust spark
guards and tool rests to 1/16" clearance from
wheel.
8.3 Cleaning
Metal shavings may still be
hot from recent grinding operations. Make w
sure shavings and debris are cold before
cleaning the grinder.
Brush all shavings from the motor housing, tool
rests, and wheel guards.
Check grinding wheels for cracks and chips.
Replace if damaged.
Avoid the use of the following
cleaning chemicals or solvents: gasoline,
carbon tetrachloride, chlorinated solvents,
ammonia, and household detergents
containing ammonia.
8.4 Lubrication
All motor bearings are permanently lubricated by
the manufacturer and require no additional
lubrication.
9.0 Optional Accessory
The bench grinder can be mounted to the
Baileigh Industrial pedestal stand (optional
accessory, p/n 577172), which has an adjustable
platform with coolant cup. See Figure 10. To
order, contact your dealer or call Baileigh
Industrial customer service at the phone number
on the cover.
Figure 10: Optional Stand

19
10.0 Troubleshooting the BBG-8
Table 3
Problem
Probable Cause
Remedy
Motor will not start.
Not plugged into receptacle.
Plug must be fully inserted into receptacle.
Switch not in ON position.
Make sure switch is moved completely to
ON position.
Motor cord cut or abraded.
Replace with new cord.
Plug on cord is faulty.
Replace with new plug.
Fuse blown or circuit breaker
tripped.
Re-set. (There may be too many machines
on circuit.)
Motor faulty.
Contact Baileigh Industrial Customer
Service.
Motor will not start
and fuse blows or
circuit breaker trips.
Too many machines running on
same electrical circuit.
Turn off other machines and try again.
Incorrect fuse.
Try time delay fuse or go to circuit with
higher rated fuse or circuit breaker.
Wheels cannot rotate because of
obstruction.
Unplug and turn grinding wheel by hand;
clear any obstructions.
Undersized extension cord.
Use correct size extension cord; see Table
1.
Short circuit.
Cord, plug, or motor needs repair; contact
Baileigh Industrial Customer Service.
Motor fails to develop
full power.
Low line voltage.
Have an electrician check power line for
proper voltage.
Faulty motor or capacitor.
Contact Baileigh Industrial Customer
Service.
Motor overheats.
Overload on motor.
Reduce load on motor; do not press so
hard.
Capacitor failure.
Call Baileigh Industrial Customer Service.
Motor stalls or slows.
Motor overload.
Reduce load on motor; do not press so
hard.
Low line voltage.
Check power line for proper voltage.
Loose wire connections.
Contact Baileigh Industrial Customer
Service.
Faulty motor.
Contact Baileigh Industrial Customer
Service.
Frequent fuse or
circuit breaker failure.
Motor overload.
Reduce load on motor; do not press so
hard.
Overload of electrical circuit.
Too many electrical appliances on same
circuit.
Incorrect fuse or circuit breaker.
Have electrician upgrade service to outlet.

20
Problem
Probable Cause
Remedy
Grinding wheels
won’t spin true.
Arbor nut too tight, springing the
flanges.
Do not overtighten nut.
Flange(s) warped, or flange surface
is not flat.
Replace flange(s).
Wheel bushings have too much
play.
Install new bushings or replace wheel.
Arbor damaged.
Contact Baileigh Industrial Customer
Service.
Excessive vibration.
Incorrect size or type of wheel.
Match wheel size to grinder specifications.
Use proper wheel type for job being done.
Wheels out of balance.
Balance wheels. See section 6.13
Too much play in wheel bushing.
Install new bushings or replace wheel.
Flanges are worn, bent or have
burrs.
Inspect flanges, replace if needed.
Worn bearings in grinder.
Replace bearings. Contact JET Customer
Service.
Poor quality wheel.
Replace wheel with one of better quality.
11.0 Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call 1-800-274-
6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial Number of your
machine available when you call will allow us to serve you quickly and accurately.
Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET. Some
parts are shown for reference only and may not be available individually.