Stanley Black Decker Grinder HGE12 User Manual

HGE12  
CORDLESS INLINE  
ROTARY GRINDER  
USER MANUAL  
Safety, Operation and Maintenance  
© 2014 Stanley Black & Decker, Inc.  
New Britain, CT 06053  
U.S.A.  
73414 9/2014 Ver 3  
 
TABLE OF CONTENTS  
SAFETY SYMBOLS ..................................................................................................................................................4  
SAFETY ...............................................................................................................................................................5 - 7  
BATTERY AND CHARGER SAFETY........................................................................................................................8  
CHARGER SAFETY...........................................................................................................................................9 - 10  
OPERATION............................................................................................................................................................ 11  
MAINTENANCE ......................................................................................................................................................12  
SPECIFICATIONS...................................................................................................................................................13  
IMPORTANT  
To fill out a Product Warranty Validation form, and for information on your warranty,  
visit Stanleyhydraulics.com and select the Company tab, Warranty.  
(NOTE: The warranty Validation record must be submitted to validate the warranty).  
SERVICING: This manual contains safety, operation, and routine maintenance instructions. Stanley Hydraulic Tools  
recommends that servicing cordless battery tools, other than routine maintenance, must be performed by an autho-  
rized and certified dealer. Please read the following warning.  
WARNING  
SERIOUS INJURY OR DEATH COULD RESULT FROM THE IMPROPER REPAIR OR  
SERVICE OF THIS TOOL.  
REPAIRS AND / OR SERVICE TO THIS TOOL MUST ONLY BE DONE BY AN  
AUTHORIZED AND CERTIFIED DEALER.  
For the nearest authorized and certified dealer, call Stanley Hydraulic Tools at the number listed on the back of this  
manual and ask for a Customer Service Representative.  
HGE12 User Manual ◄ 3  
 
SAFETY SYMBOLS  
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair ac-  
tions which, if not strictly followed, could result in a life-threatening situation, bodily injury or damage to equipment.  
This is the safety alert symbol. It is used to alert you to potential personal injury  
hazards. Obey all safety messages that follow this symbol to avoid possible  
injury or death.  
This safety alert and signal word indicate an imminently hazardous situation  
which, if not avoided, will result in death or serious injury.  
DANGER  
WARNING  
CAUTION  
This safety alert and signal word indicate a potentially hazardous situation  
which, if not avoided, could result in death or serious injury.  
This safety alert and signal word indicate a potentially hazardous situation  
which, if not avoided, could result in death or serious injury.  
This signal word indicates a potentially hazardous situation which, if not avoid-  
ed, may result in property damage.  
CAUTION  
NOTICE  
This signal word indicates a situation which, if not avoided, will result in damage  
to the equipment.  
This signal word indicates a situation which, if not avoided, may result in dam-  
age to the equipment.  
IMPORTANT  
Always observe safety symbols. They are included for your safety and for the protection of the tool.  
LOCAL SAFETY REGULATIONS  
Enter any local safety regulations here. Keep these instructions in an area accessible to the operator and mainte-  
nance personnel.  
4 ► HGE12 User Manual  
 
SAFETY PRECAUTIONS  
Product Safety Information: HGE12 Cord-  
less Inline Rotary Grinder  
3) PERSONAL SAFETY  
a) Stay alert, watch what you are doing and use  
common sense when operating a power tool. Do  
not use a power tool while you are tired or under  
the influence of drugs, alcohol or medication. A  
moment of inattention while operating power tools may  
result in serious personal injury.  
Product Description  
This Cordless Inline Rotary Grinder is a battery pow-  
ered, hand-held, tool that is fitted with an inserted tool  
whose shank is clamped in a collet chuck. The inserted  
tool is typically a carbide burr, or stone permanently  
mounted on a shank or mandrel. The intent of this tool  
is for railroad signal communication, surface prepara-  
tion essential for pin brazing applications on rail. Do  
not use this tool for applications other than what it is  
intended for.  
b) Use personal protective equipment. Always wear  
eye protection. Protective equipment such as dust  
mask, non-skid safety shoes, hard hat, or hearing  
protection used for appropriate conditions will reduce  
personal injuries.  
c) Prevent unintentional starting. Ensure the switch  
is in the off position before connecting to battery  
pack, picking up or carrying the tool. Carrying power  
tools with your finger on the switch or energizing power  
tools that have the switch on invites accidents.  
d) Remove any adjusting key or wrench before  
turning the power tool on. A wrench or a key left at-  
tached to a rotating part of the power tool may result in  
personal injury.  
IF YOU HAVE ANY QUESTIONS OR COMMENTS  
ABOUT THIS OR ANY DEWALT TOOL, CALL US  
TOLL FREE AT: 1-800-4-DEWALT (1-800-433-9258)  
WARNING: To reduce the risk of injury, read the  
instruction manual.  
e) Do not overreach. Keep proper footing and bal-  
ance at all times. This enables better control of the  
power tool in unexpected situations.  
f) Dress properly. Do not wear loose clothing or  
jewelry. Keep your hair, clothing and gloves away  
from moving parts. Loose clothes, jewelry or long  
hair can be caught in moving parts.  
General Power Tool Safety Warnings  
WARNING! Read all safety warnings and  
instructions Failure to follow the warnings  
and instructions may result in electric shock, fire and/or  
serious injury.  
The term “power tool” in the warnings and safety  
refers to the battery-operated HGE12 (cordless) rotary  
grinder.  
g) If devices are provided for the connection of  
dust extraction and collection facilities, ensure  
these are connected and properly used. Use of dust  
collection can reduce dust-related hazards.  
4) POWER TOOL USE AND CARE  
a) Do not force the power tool. Use the correct  
power tool for your application. The correct power  
tool will do the job better and safer at the rate for which  
it was designed.  
b) Do not use the power tool if the switch does  
not turn it on and off. Any power tool that cannot be  
controlled with the switch is dangerous and must be  
repaired.  
1) WORK AREA SAFETY  
a) Keep work area clean and well lit. Cluttered or  
dark areas invite accidents.  
b) Do not operate power tools in explosive atmo-  
spheres, such as in the presence of flammable liq-  
uids, gases or dust. Power tools create sparks which  
may ignite the dust or fumes.  
c) Keep children and bystanders away while oper-  
ating a power tool. Distractions can cause you to lose  
control.  
c) Disconnect the battery pack from the power tool  
before making any adjustments, changing accesso-  
ries, or storing power tools. Such preventive safety  
measures reduce the risk of starting the power tool  
accidentally.  
d) Store idle power tools out of the reach of chil-  
dren and do not allow persons unfamiliar with the  
power tool or these instructions to operate the  
power tool. Power tools are dangerous in the hands of  
untrained users.  
2) ELECTRICAL SAFETY  
a) Do not expose power tools to rain or wet condi-  
tions. Water entering a power tool will increase the risk  
of electric shock.  
HGE12 User Manual ◄ 5  
 
SAFETY PRECAUTIONS  
e) Maintain power tools. Check for misalignment  
Additional Specific Safety Rules for Cordless  
Rotary Grinder Tools  
• Hold power tools by insulated gripping surfaces  
or binding of moving parts, breakage of parts and  
any other condition that may affect the power  
tool’s operation. If damaged, have the power tool  
repaired before use. Many accidents are caused by  
poorly maintained power tools.  
f) Keep cutting tools sharp and clean. Properly  
maintained cutting tools with sharp cutting edges are  
less likely to bind and are easier to control.  
g) Use the power tool, accessories and tool bits,  
etc. in accordance with these instructions, taking  
into account the working conditions and the work  
to be performed. Use of the power tool for opera-  
tions different from those intended could result in a  
hazardous situation.  
when performing an operation.  
WARNING: After changing bits or making any  
adjustments, make sure the collet nut is securely  
tightened to avoid injury.  
WARNING: Do not press spindle lock or collet  
lock buttons while motor is running. The operator  
may lose control and drop the tool. Personal injury or  
serious tool damage may result.  
CAUTION: Do not touch the bit or collet nut dur-  
ing or immediately after cutting material. The bit and  
collet nut may be hot enough to burn bare skin.  
• Do not run tool while carrying at your side. The  
spinning bit may become entangled with clothing and  
injury may occur.  
• Always wear eye protection. Dust mask and  
hearing protection must be used for appropriate  
conditions. Using personal safety devices is recom-  
mended. WORK SAFE.  
5) BATTERY TOOL USE AND CARE  
a) Recharge only with the charger specified by  
the manufacturer. A charger that is suitable for one  
type of battery pack may create a risk of fire when  
used with another battery pack.  
• Do not use this tool with drill or screwdriver  
bits. This tool is not intended to be used as a drill or  
screwdriver.  
b) Use power tools only with specifically desig-  
nated battery packs. Use of any other battery packs  
may create a risk of injury and fire.  
• Be sure your cutting bits are sharp and in good  
condition. Damaged bits can cause the tool to jump,  
injuring the operator.  
• Never touch the bit immediately after use. It may  
be extremely hot.  
• Be sure that the motor has stopped completely  
before you lay the tool down. If the cutter head  
is still spinning when the tool is laid down, it could  
cause injury or damage.  
• Be sure that the bit is clear of the work piece  
before starting motor. If the bit is in contact with the  
work piece when the motor starts it could make the  
tool jump, causing damage or injury.  
c) When battery pack is not in use, keep it away  
from other metal objects like paper clips, coins,  
keys, nails, screws, or other small metal objects  
that can make a connection from one terminal to  
another. Shorting the battery terminals together may  
cause burns or a fire.  
d) Under abusive conditions, liquid may be  
ejected from the battery; avoid contact. If contact  
accidentally occurs, flush with water. If liquid  
contacts eyes, additionally seek medical help.  
Liquid ejected from the battery may cause irritation or  
burns.  
• If your tool fails to function properly, take it to  
an authorized service center. There are no user  
serviceable parts inside this tool and it should only  
be opened by trained service personnel.  
WARNING: ALWAYS use safety glasses.  
Everyday eyeglasses are NOT safety glasses. Also  
use face or dust mask if cutting operation is dusty.  
ALWAYS WEAR CERTIFIED SAFETY EQUIPMENT:  
• ANSI Z87.1 eye protection (CAN/CSA Z94.3),  
• ANSI S12.6 (S3.19) hearing protection,  
• NIOSH/OSHA/MSHA respiratory protection.  
6) SERVICE  
a) Have your power tool serviced by a qualified  
repair person using only identical replacement  
parts. This will ensure that the safety of the power  
tool is maintained.  
6 ► HGE12 User Manual  
 
SAFETY PRECAUTIONS  
WARNING: Some dust created by power sand-  
READ ALL INSTRUCTIONS  
ing, sawing, grinding, drilling, and other construction  
activities contains chemicals known to cause can-  
cer, birth defects or other reproductive harm. Some  
examples of these chemicals are:  
• Lead from lead-based paints,  
• Crystalline silica from bricks and cement and other  
masonry products, and  
• Arsenic and chromium from chemically-treated  
lumber (CCA).  
Your risk from these exposures varies, depending on  
how often you do this type of work.  
To reduce your exposure to these chemicals: work in  
a well ventilated area, and work with approved safety  
equipment, such as those dust masks that are spe-  
cially designed to filter out microscopic particles.  
• Avoid prolonged contact with dust from power sand-  
ing, sawing, grinding, drilling, and other construc-  
tion activities. Wear protective clothing and wash  
exposed areas with soap and water. Allowing dust  
to get into your mouth, eyes, or lay on the skin may  
promote absorption of harmful chemicals.  
WARNING: Use of this tool can generate and/or  
disburse dust, which may cause serious and perma-  
nent respiratory or other injury. Always use NIOSH/  
OSHA approved respiratory protection appropriate  
for the dust exposure. Direct particles away from  
face and body.  
WARNING: Always wear proper personal hear-  
ing protection that conforms to ANSI S12.6 (S3.19)  
during use. Under some conditions and duration of  
use, noise from this product may contribute to hear-  
ing loss.  
CAUTION: When not in use, place tool on its  
side on a stable surface where it will not cause a trip-  
ping or falling hazard. Some tools with large battery  
packs will stand upright on the battery pack but may  
be easily knocked over.  
• Do not charge or use battery in explosive  
atmospheres, such as in the presence of flam-  
mable liquids, gases or dust. Inserting or removing  
the battery from the charger may ignite the dust or  
fumes.  
• NEVER force battery pack into charger. DO NOT  
modify battery pack in any way to fit into a non-  
compatible charger as battery pack may rupture  
causing serious personal injury.  
• Charge the battery packs only in DEWALT char-  
gers.  
• DO NOT splash or immerse in water or other liq-  
uids.  
• Do not store or use the tool and battery pack  
in locations where the temperature may reach or  
exceed 105°F (40°C) (such as outside sheds or  
metal buildings in summer).  
DANGER: Electrocution hazard. Never attempt  
to open the battery pack for any reason. If battery  
pack case is cracked or damaged, do not insert into  
charger. Do not crush, drop or damage battery pack.  
Do not use a battery pack or charger that has re-  
ceived a sharp blow, been dropped, run over or dam-  
aged in any way (i.e., pierced with a nail, hit with a  
hammer, stepped on). Electric shock or electrocu-  
tion may result. Damaged battery packs should be  
returned to service center for recycling.  
NOTE: Battery storage and carrying caps are pro-  
vided for use whenever the battery is out of the tool  
or charger. Remove cap before placing battery in  
charger or tool.  
WARNING: Fire hazard. Do not store  
or carry battery so that metal objects can  
contact exposed battery terminals. For example,  
do not place battery in aprons, pockets, tool boxes,  
product kit boxes, drawers, etc., with loose nails,  
screws, keys, etc. without battery cap. Transporting  
batteries can possibly cause fires if the battery  
terminals inadvertently come in contact with  
conductive materials such as keys, coins, hand  
tools and the like. The US Department of Trans-  
portation Hazardous Material Regulations (HMR)  
actually prohibit transporting batteries in commerce  
or on airplanes (i.e., packed in suitcases and carry-  
on luggage) UNLESS they are properly protected  
from short circuits. So when transporting individual  
batteries, make sure that the battery terminals are  
protected and well insulated from materials that could  
contact them and cause a short circuit.  
Important Safety Instructions for All Battery  
Packs  
When ordering replacement battery packs, be sure  
to include model number and voltage. The battery  
pack is not fully charged out of the carton. Before  
using the battery pack and charger, read the safety  
instructions below. Then follow charging procedures  
outlined.  
HGE12 User Manual ◄ 7  
 
BATTERY & CHARGER SAFETY  
SPECIFIC SAFETY INSTRUCTIONS FOR  
Important Safety Instructions for All Bat-  
LITHIUM ION (LI-ION)  
tery Chargers  
• Do not incinerate the battery pack even if it is  
severely damaged or is completely worn out. The  
battery pack can explode in a fire. Toxic fumes and  
materials are created when lithium ion battery packs  
are burned.  
• If battery contents come into contact with the  
skin, immediately wash area with mild soap and  
water. If battery liquid gets into the eye, rinse water  
over the open eye for 15 minutes or until irritation  
ceases. If medical attention is needed, the battery  
electrolyte is composed of a mixture of liquid organic  
carbonates and lithium salts.  
• Contents of opened battery cells may cause  
respiratory irritation. Provide fresh air. If symptoms  
persists, seek medical attention.  
WARNING: Burn hazard. Battery liquid may be  
flammable if exposed to spark or flame.  
SAVE THESE INSTRUCTIONS: This manual con-  
tains important safety and operating instructions for  
battery chargers.  
• Before using charger, read all instructions and  
cautionary markings on charger, battery pack, and  
product using battery pack.  
DANGER: Electrocution hazard. 120 volts are  
present at charging terminals. Do not probe with  
conductive objects. Electric shock or electrocution  
may result.  
WARNING: Shock hazard. Do not allow any  
liquid to get inside charger. Electric shock may result.  
CAUTION: Burn hazard. To reduce the risk of  
injury, charge only DEWALT rechargeable batteries.  
Other types of batteries may burst causing personal  
injury and damage.  
CAUTION: Under certain conditions, with the  
charger plugged in to the power supply, the exposed  
charging contacts inside the charger can be shorted  
by foreign material. Foreign materials of a conductive  
nature such as, but not limited to, steel wool, alumi-  
num foil, or any buildup of metallic particles should  
be kept away from charger cavities. Always unplug  
the charger from the power supply when there is no  
battery pack in the cavity. Unplug charger before at-  
tempting to clean.  
• DO NOT attempt to charge the battery pack with  
any chargers other than the ones in this manual.  
The charger and battery pack are specifically de-  
signed to work together.  
• These chargers are not intended for any uses  
other than charging DEWALT rechargeable  
batteries. Any other uses may result in risk of fire,  
electric shock or electrocution.  
The RBRC™ Seal  
The RBRC™ (Rechargeable  
Battery Recycling Corporation)  
Seal on the lithium ion batteries (or battery packs)  
indicate that the costs to recycle these batteries (or  
battery packs) at the end of their useful life have  
already been paid by DEWALT. In some areas, it is il-  
legal to place spent nickel cadmium, nickel metal hy-  
dride or lithium ion batteries in the trash or municipal  
solid waste stream and the RBRC program provides  
an environmentally conscious alternative.  
RBRC™ in cooperation with DEWALT and other bat-  
tery users, has established programs in the United  
States and Canada to facilitate the collection of spent  
nickel cadmium, nickel metal hydride or lithium ion  
batteries. Help protect our environment and conserve  
natural resources by returning the spent nickel cad-  
mium and nickel cadmium, nickel metal hydride  
or lithium ion batteries to an authorized DEWALT  
service center or to your local retailer for recycling.  
You may also contact your local recycling center for  
information on where to drop off the spent battery.  
RBRC™ is a registered trademark of the Recharge-  
able Battery Recycling Corporation.  
• Do not expose charger to rain or snow.  
• Pull by plug rather than cord when discon-  
necting charger. This will reduce risk of damage to  
electric plug and cord.  
• Make sure that cord is located so that it will not  
be stepped on, tripped over, or otherwise sub-  
jected to damage or stress.  
• Do not use an extension cord unless it is abso-  
lutely necessary. Use of improper extension cord  
could result in risk of fire, electric shock, or electrocu-  
tion.  
8 ► HGE12 User Manual  
 
CHARGER SAFETY  
• When operating a charger outdoors, use an  
• The charger is designed to operate on standard  
120V household electrical power. Do not attempt  
to use it on any other voltage. This does not apply  
to the vehicular charger.  
extension cord suitable for outdoor use and only  
if necessary. Use of a cord suitable for outdoor use  
reduces the risk of electric shock. Do not expose the  
charger to the elements like rain or snow.  
Using Automatic Tune-Up™ Mode  
The automatic Tune-Up™ Mode equalizes or balanc-  
es the individual cells in the battery pack allowing it  
to function at peak capacity. Battery packs should be  
tuned up weekly or after 10 charge/discharge cycles  
or whenever the pack no longer delivers the same  
amount of work. To use the automatic Tune-Up™,  
place the battery pack in the charger and leave it for  
at least 8 hours. The charger will cycle through the  
following modes.  
1. The red light will blink continuously indicating that  
the 1-hour charge cycle has started.  
2. When the 1-hour charge cycle is complete, the  
light will stay on continuously and will no-longer blink.  
This indicates that the pack is fully charged and can  
be used at this time.  
• An extension cord must have adequate wire  
size (AWG or American Wire Gauge) for safety.  
The smaller the gauge number of the wire, the great-  
er the capacity of the cable, that is 16 gauge has  
more capacity than 18 gauge. An undersized cord  
will cause a drop in line voltage resulting in loss of  
power and overheating. When using more than one  
extension to make up the total length, be sure each  
individual extension contains at least the minimum  
wire size. The following table shows the correct size  
to use depending on cord length and nameplate am-  
pere rating. If in doubt, use the next heavier gauge.  
The smaller the gauge number, the heavier the cord.  
Total Length of Cord  
3. If the pack is left in the charger after the initial  
1-hour charge, the charger will begin the Automatic  
Tune-Up™ mode. This mode continues up to 8 hours  
or until the individual cells in the battery pack are  
equalized. The battery pack is ready for use and can  
be removed at any time during the Automatic Tune-  
Up™ mode.  
25 ft. 50 ft. 75 ft. 100 ft. 125 ft. 150 ft.  
7.6 m 15.2 m 22.9 m 30.5 m 38.1 m 45.7 m  
Wire Size AWG  
18  
18  
16  
16  
14  
14  
4. Once the Automatic Tune-Up™ mode is complete,  
the charger will begin a maintenance charge; the red  
indicator will remain lit.  
• Do not place any object on top of charger or  
place the charger on a soft surface that might  
block the ventilation slots and result in exces-  
sive internal heat. Place the charger in a position  
away from any heat source. The charger is ventilated  
through slots in the top and the bottom of the hous-  
ing.  
Chargers  
Your tool uses a DEWALT 18 volt charger. Be sure to  
read all safety instructions before using your charger.  
• Do not operate charger with damaged cord or  
plug.  
Charging Procedure  
DANGER: Electrocution hazard. 120 volts pres-  
ent at charging terminals. Do not probe with conduc-  
tive objects. Danger of electric shock or electrocu-  
tion.  
• Do not operate charger if it has received a sharp  
blow, been dropped, or otherwise damaged in  
any way. Take it to an authorized service center.  
• Do not disassemble charger; take it to an au-  
thorized service center when service or repair is  
required. Incorrect reassembly may result in a risk of  
electric shock, electrocution or fire.  
• Disconnect the charger from the outlet before  
attempting any cleaning. This will reduce the risk  
of electric shock. Removing the battery pack will  
not reduce this risk.  
1. Plug the charger into an appropriate outlet before  
inserting battery pack.  
2. Insert the battery pack into the charger. The red  
(charging) light will blink continuously indicating that  
the charging process has started.  
3. The completion of charge will be indicated by the  
red light remaining ON continuously. The pack is fully  
charged and may be used at this time or left in the  
charger.  
• NEVER attempt to connect 2 chargers together.  
HGE12 User Manual ◄ 9  
 
CHARGER SAFETY  
Important Charging Notes  
1. Longest life and best performance can be obtained  
if the battery pack is charged when the air tempera-  
ture is between 65°F and 75°F (18°- 24°C). DO NOT  
charge the battery pack in an air temperature below  
+40°F (+4.5°C), or above +105°F (+40.5°C). This  
is important and will prevent serious damage to the  
battery pack.  
2. The charger and battery pack may become warm  
to touch while charging. This is a normal condition,  
and does not indicate a problem. To facilitate the  
cooling of the battery pack after use, avoid placing  
the charger or battery pack in a warm environment  
such as in a metal shed, or an uninsulated trailer.  
3. If the battery pack does not charge properly:  
a. Check current at receptacle by plugging in  
a lamp or other appliance;  
Charge Indicators  
Some chargers are designed to detect certain prob-  
lems that can arise with battery packs. Problems  
are indicated by the red light flashing at a fast rate.  
If this occurs, re-insert battery pack into the charger.  
If the problem persists, try a different battery pack  
to determine if the charger is OK. If the new pack  
charges correctly, then the original pack is defective  
and should be returned to a service center or other  
collection site for recycling. If the new battery pack  
elicits the same trouble indication as the original,  
have the charger tested at an authorized service  
center.  
b. Check to see if receptacle is connected to  
a light switch which turns power off when  
you turn out the lights;  
c. Move charger and battery pack to a loca-  
tion where the surrounding air tempera-  
ture is approximately 65°F - 75°F (18°-  
24°C);  
d. If charging problems persist, take the tool,  
battery pack and charger to your local  
HOT/COLD PACK DELAY  
Some chargers have a Hot/Cold Pack Delay fea-  
ture: when the charger detects a battery that is hot,  
it automatically starts a Hot Pack Delay, suspending  
charging until the battery has cooled. After the bat-  
tery has cooled, the charger automatically switches  
to the Pack Charging mode. This feature ensures  
maximum battery life. The red light flashes long, then  
short while in the Hot Pack Delay mode.  
service center.  
4. The battery pack should be recharged when it fails  
to produce sufficient power on jobs which were easily  
done previously. DO NOT CONTINUE to use under  
these conditions. Follow the charging procedure. You  
may also charge a partially used pack whenever you  
desire with no adverse affect on the battery pack.  
5. Under certain conditions, with the charger plugged  
into the power supply, the exposed charging contacts  
inside the charger can be shorted by foreign mate-  
rial. Foreign materials of a conductive nature such  
as, but not limited to, grinding dust, metal chips,  
steel wool, aluminum foil, or any buildup of metallic  
particles should be kept away from charger cavities.  
Always unplug the charger from the power supply  
when there is no battery pack in the cavity. Unplug  
charger before attempting to clean.  
PROBLEM POWER LINE  
Some chargers have a Problem Power Line indicator.  
When the charger is used with some portable power  
sources such as generators or sources that convert  
DC to AC, the charger may temporarily suspend  
operation, flashing the red light with two fast blinks  
followed by a pause. This indicates the power source  
is out of limits.  
LEAVING THE BATTERY PACK IN THE CHARGER  
The charger and battery pack can be left connected  
with the red light glowing indefinitely. The charger will  
keep the battery pack fresh and fully charged.  
NOTE: A battery pack will slowly lose its charge  
when kept out of the charger. If the battery pack has  
not been kept on maintenance charge, it may need  
to be recharged before use. A battery pack may also  
slowly lose its charge if left in a charger that is not  
plugged into an appropriate AC source.  
6. Do not freeze or immerse charger in water or any  
other liquid.  
WARNING: Shock hazard. Don’t allow any liq-  
uid to get inside charger. Electric shock may result.  
CAUTION: Never attempt to open the battery  
pack for any reason. If the plastic housing of the bat-  
tery pack breaks or cracks, return to a service center  
for recycling.  
WEAK BATTERY PACKS: Chargers can also detect  
a weak battery pack. Such batteries are still usable  
but should not be expected to perform as much work.  
The charger will indicate to replace battery pack.  
10 ► HGE12 User Manual  
 
OPERATION  
To install the battery pack into the tool handle,  
Storage Recommendations  
align the base of the tool with the notch inside the  
tool’s handle (Fig. 1) and slide the battery pack firmly  
into the handle until you hear the lock snap into place  
(Fig. 1).  
To remove the battery pack from the tool, press  
the release buttons (A) and firmly pull the battery  
pack out of the tool handle. Insert it into the charger  
as described in the charger manual.  
1. The best storage place is one that is cool and dry  
away from direct sunlight and excess heat or cold.  
2. Long storage will not harm the battery pack or  
charger. Under proper conditions, they can be stored  
for 5 years or more.  
SAVE THESE INSTRUCTIONS FOR FU-  
TURE USE OPERATION  
To Maintain Safe Tool Control  
• Never operate the tool with one hand. Grind with  
both hands.  
• Disconnect battery from tool before making ad-  
justments, changing bits, or cleaning tool.  
• Do not start the tool with bit engaged in the  
material. The bit may grab the material.  
WARNING: To reduce the risk of serious per-  
sonal injury, turn tool off and disconnect tool from  
power source before making any adjustments or  
removing/installing attachments or accessories.  
Installing and Removing the Battery Pack  
NOTE: Make sure your battery pack is fully charged.  
Switch (Fig. 2)  
To start the motor, slide the switch (B) to “I” or “On”  
position.  
To stop the motor, slide the switch to (C) “O” or “Off”  
position.  
Installing and Removing the Bit  
This tool has a tool-free bit change system. To  
change bits, FIRST turn off the tool and disconnect  
the battery from the tool.  
1. To replace bit, depress both spindle lock (D) and  
collet lock (E) and turn collet grip counterclockwise.  
2. Insert or remove bit.  
A
Figure 1  
WARNING: The bits are sharp and should be  
handled with great care.  
CAUTION: When replacing bits, do not insert  
cutting flutes into the collet. This may result in  
broken bits.  
3. While depressing both spindle and collet locks,  
turn the collet grip clockwise to firmly tighten the  
collet. For some heavy duty applications, it may be  
necessary to use a wrench to further tighten the nut  
(F) while depressing the spindle lock (D).  
B
C
Figure 2  
F
SPINDLE  
LOCK  
CAUTION: Never tighten the collet without a  
bit installed. This tool comes with a 1/4” collet. To  
change collets, remove the collet nut and insert the  
desired collet.  
E
D
COLLET  
LOCK  
Figure 3  
WARNING: Make sure the switch is in the off  
position before removing or installing battery.  
HGE12 User Manual ◄ 11  
 
MAINTENANCE  
MAINTENANCE  
TROUBLESHOOTING  
WARNING: To reduce the risk of serious per-  
sonal injury, turn tool off and disconnect battery pack  
before making any adjustments or removing/install-  
ing attachments or accessories.  
Tool will not run:  
• Battery pack not charged.  
• Charge battery pack  
• Battery pack not inserted properly.  
• Make sure battery pack is fully  
inserted & clicks firmly into place.  
Cleaning  
WARNING: Blow dirt and dust out of all air  
vents with clean, dry air at least once a week. To  
minimize the risk of eye injury, always wear ANSI  
Z87.1 approved eye protection when performing this.  
WARNING: Never use solvents or other harsh  
chemicals for cleaning the non-metallic parts of  
the tool. These chemicals may weaken the plastic  
materials used in these parts. Use a cloth dampened  
only with water and mild soap. Never let any liquid  
get inside the tool; never immerse any part of the tool  
into a liquid.  
Grinder operates too slow:  
• Low battery charge  
• Charge battery per instructions.  
• Too much down pressure.  
• Do not use excessive down pressure  
while grinding.  
Short battery life:  
• New batteries or batteries that have been  
stored for some time, may not initially  
accept a full charge.  
CHARGER CLEANING INSTRUCTIONS  
WARNING: Shock hazard. Disconnect the char-  
ger from the AC outlet before cleaning.  
Dirt and grease may be removed from the exterior of  
the charger using a cloth or soft non-metallic brush.  
Do not use water or any cleaning solutions.  
• This is normal, it will charge fully  
after several charge and discharge  
cycles. Also see charging procedure  
in this manual.  
Accessories  
WARNING: Since accessories, other than  
those offered by DEWALT, have not been tested with  
this product, use of such accessories with this tool  
could be hazardous. To reduce the risk of injury, only  
Stanley Hydraulic Tools, recommended accessories  
should be used with this product.  
If you need any assistance in locating any accessory,  
please contact Stanley Hydraulic Tools at 3810 SE  
Naef Rd, Milwaukie, OR 97267, (503-659-5660) and  
ask for a customer service representative also visit  
Repairs  
The charger is not serviceable. There are no ser-  
viceable parts inside the charger. To assure product  
SAFETY and RELIABILITY, repairs, maintenance  
and adjustments (including brush inspection and  
replacement) should be performed by a DEWALT  
factory service center, a DEWALT authorized service  
center or other qualified service personnel. Always  
use identical replacement parts.  
12 ► HGE12 User Manual  
 
SPECIFICATIONS  
SPECIFICATIONS  
Volts...................................................................................................................................................................18 DC  
RPM Max...................................................................................................................................................26,000/min  
Battery Charger (Fast Charge) NiCd / NiMH / Li-Ion (Input 120 V AC) ...................................................... 7.2V / 18V  
Battery Pack (Type 1).................................................................................................................XRP Lithium Ion 18V  
Weight Tool Only (No Battery)............................................................................................................. 2.0 lb / 0.90 kg  
Weight Tool & Battery.......................................................................................................................... 3.4 lb / 1.54 kg  
Weight (Battery Only) .......................................................................................................................... 1.4 lb / 0.63 kg  
Overall Length with Battery ................................................................................................................ 12 in. / 30.5 cm  
Overall Width with Battery................................................................................................................... 3.5 in. / 8.9 cm  
Overall Height with Battery.............................................................................................................4.625 in. / 11.7 cm  
Collet Size ..................................................................................................................................... 1/4 inch / 6.35 mm  
Collet Nut (Wrench Size)............................................................................................................. 5/8 inch / 15.89 mm  
HGE12 MODELS  
HGE12141 (Grinder Only) NO battery or Charger  
HGE12151 (Includes: Grinder with Battery and Charger)  
HGE12161 (Includes: Grinder with Battery, Charger and Bullnose Stone)  
HGE12161B (Includes: Grinder with Battery, Charger, Bullnose Stone and BNSF Stone)  
Battery 18V and Charger 120V (P/N-73399)  
Battery 18V (P/N-73400)  
REPLACEMENT BITS  
Carbide Burr (1/4 inch Shank)..........................................................................................73358  
Bull Nose Stone 2 inch (1/4 inch Shank)..........................................................................73052  
Bull Nose Stone (BNSF) 2 inch (1/4 inch Shank).............................................................66976  
HGE12 User Manual ◄ 13  
 
Stanley Hydraulic Tools  
3810 SE Naef Road  
Milwaukie, Oregon 97267  
503-659-5660 / Fax 503-652-1780  
 

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