DeWalt DW248 User manual

PRODUCT DOSSIER
DeWALT
ROTARY DRILL
DW248
July 1998
Martin Cook
dw248dos.sam

Contents
Attached to this dossier:
Copy of service parts lists
Copy of service parts drawings
Copy of service wiring diagram
Copy of repair information
Introduction
Catalogue number(s) DW248
Type number 1
Description Rotary drill
Manufacturing plant Easton, USA
Service parts warehouse Perth avenue, UK
Euro Tech engineer Martin Cook
Product overview
Introducing a new drill similar to the existing ELU unit BM18E. This unit is similar but
incorporates an "Anti-lock" control system. (see next page).
This unit features a spindle lock and a new single sleeve keyless chuck, that provides a
more efficient chuck locking system with superior bit gripping strength.
This unit has a new square motor providing high power and a greater overload protection
plus a more efficient brush system. These together provides longer life to the tool.
Launch planner
Launch markets Europe
Launch date July 1998
Page 1

Explanantion of the "Anti-lock" control system
This drill has an electronic feature called "Anti-lock control". It is designed to help control
the drill during a stall / lock up situation and prevent the tool from pulling out of your hands.
This stall condition usually occurs when the drill bit binds in the hole of the material and
may be encountered when using large bits in steel or wood.
The way the system works is that when the electronic circuit senses a stall condition, it
signals the motor to cycle on and off for a set period of time. This takes up some of the
reaction of the stall and will help you keep the drill under control.
Since some reaction will occur, always use the side handle and be prepared for a
potential stall. The electronic circuit then checks to see if a stall condition still exists and
if it does, it will shut off the tool in approximately one half of a second. Releasing and
reactivating the switch will start the tool up again. If it does not see a stall, the drill will
continue to function as normal.
The unit has an indicator light and label located in the top of the tool. There are three
signals the light gives off:
1) Check: One flash each time the trigger is depressed means the electronic circuit is
functioning correctly. If there is no flash, then the tool is not working correctly and
should be repaired.
2) Engaged: Should a stall condition exist, the electronic circuit will shut down power
to the tool and the light will be steady on. When the unit is running in normal mode,
there will be no light indication.
3) Problem: A series of continual flashes as the trigger is depressed indicates that the
electronic circuit is no longer functioning. The tool may still be able to function without the
benefit of the Anti-lock control but should be serviced as soon as possible.
Page 2

TYP.
DW248 1
02-07-98E12558
800
8
16
15
17
14 7
1
9
19
20
21
6
22 13
5
3
3
51
21
2
10
28 46 50
56
57
55
30
31 27
54
66
54
32
67
34
56
50
24
58
29
26 25
58
48
45
33
65
43
53
52
39
37
38
69
40

DW248-----A TY 1 03-07-98
-------------------------------------------------------------
ITEM DESCRIPTION PART NO. QTY VARIANT
1 ARMATURE 230V 176852-03 1 M-AT-BE-DE-ES-FR-GR-IT
1 ARMATURE 230V 176852-03 1 M-CH
1 ARMATURE 230V 176852-03 1 M-DK-FI-NO-SE-NL-PT-LU
1 ARMATURE 115V 176852-00 1 M-GB 115V
1 ARMATURE 230V 176852-03 1 M-GB 240V
2 FIELD 230V 176848-01 1 M-AT-BE-DE-ES-FR-GR-IT
2 FIELD 230V 176848-01 1 M-CH
2 FIELD 230V 176848-01 1 M-DK-FI-NO-SE-NL-PT-LU
2 FIELD 115V 176848-00 1 M-GB 115V
2 FIELD 230V 176848-01 1 M-GB 240V
3 BRUSH 176949-00 2 M-AT-BE-DE-ES-FR-GR-IT
3 BRUSH 176949-00 2 M-CH
3 BRUSH 176949-00 2 M-DK-FI-NO-SE-NL-PT-LU
3 BRUSH 176949-01 2 M-GB 115V
3 BRUSH 176949-00 2 M-GB 240V
5 BRUSH HOLDER 176801-03 1
6 BRUSH HOLDER 176800-03 1
7 SWITCH 386623-01 1
8 CORDSET 330080-39 1 M-AT-BE-DE-ES-FR-GR-IT
8 CORDSET 330080-40 1 M-CH
8 CORDSET 330080-39 1 M-DK-FI-NO-SE-NL-PT-LU
8 CORDSET 330061-14 1 M-GB 115V
8 CORDSET 330060-07 1 M-GB 240V
9 * BEARING 176950-00 1
10 * BEARING 176950-00 1
13 FIELDCASE 386751-01 1
14 HANDLE COVER 176900-01 1
15 CORD CLAMP 176832-00 1
16 CORD PROTECTOR 330005-01 1
17 SCREW 330019-13 3
18 SCREW 176951-00 2
19 * SLEEVE 949721-03 1
20 BAFFLE 176811-00 1
21 DAMPER 949638-02 3
22 BRAND LABEL 149474-00 1
24 GEARCASE 176678-00 1
25 SPINDLE 176705-00 1
26 * BEARING 330003-09 1
27 SPACER 176691-00 1
28 GEARCASE COVER 176716-00 1
29 WASHER 23813-00 1
30 GEAR 176704-00 1
31 PIN 99227-05 1
32 SCREW 148204-00 1
33 SPINDLE LOCK 176641-00 1
34 CHUCK 386699-00 1
37 LENS 176947-00 1
38 LABEL 386503-00 1
39 HANDLE SIDE SA 939794-00 1
40 LEAD & SOCKET SA 386597-00 1

DW248-----A TY 1 03-07-98
-------------------------------------------------------------
ITEM DESCRIPTION PART NO. QTY VARIANT
43 TERMINAL 136086-02 1
45 SCREW 330019-14 1
46 GASKET 176724-00 1
48 RETAINER 87692-00 1
50 BEARING NEEDLE 93128-00 3
51 MODULE 176862-03 1 M-AT-BE-DE-ES-FR-GR-IT
51 MODULE 176862-03 1 M-CH
51 MODULE 176862-03 1 M-DK-FI-NO-SE-NL-PT-LU
51 ELECTRONIC 115V 176862-02 1 M-GB 115V
51 MODULE 176862-03 1 M-GB 240V
52 LEAD WHITE 176890-00 1
53 LEAD RED 176890-01 1
54 BEARING NEEDLE 330004-01 2
55 GEAR & PINION SA 176700-00 1
56 WASHER THRUST 91817-00 3
57 BEARING 91644-00 1
58 SCREW 330019-18 2
65 PINION & GEAR SA 176703-00 1
66 BEARING THRUST 176733-00 1
67 WASHER THRUST 385075-00 1
69 LABEL 387233-00 1
800 * GREASE 286436-00 1
CAPACITY 13MM
VOLTAGE #1 VOLTS 230
AMPERE #1 AMPS 1.4
INPUT WATTS #1 WATTS 701
OUTPUT WATTS #1 WATTS 385
RPM #1 0-600
VOLTAGE #2 VOLTS 115
AMPERE #2 AMPS 2.6
INPUT WATTS #2 WATTS 701
OUTPUT WATTS #2 WATTS 385
RPM #2 0-600
* = SEE REPAIR INSTRUCTIONS

TYP.
MODULE(51)WIREHARNESS (40)
BLUE
GREY
GREY
PINK
FIELD(2)
DW248 1
BROWN
CHOKE(53)
AB
CD
FE
WHITERED
PURPLE
BLUE
CHOKE(51)
RED
BLACK
WHITE
BLACK
SWITCH (7)SWITCH
REV SWITCH MAINS
PLUG(8)
BLUE
BROWN
1
2
3
4
P3P2P1
M1M2
1
2
E12579 07-07-98
ENGLISHFRENCH ITALIAN GERMAN
BLACK NOIR NEROSCHWARZ
WHITEBLANC BIANCOWEISS
BROWN BRUN MARRONEBRAUN
BLUEBLEU BLU BLAU
RED ROUGEROSSOROT
YELLOWJAUNEGIALLO GELB
GREENVERTVERDEGRUN
ORANGEORANGEARANCIO ORANGE
GREYGRISGRIGIO GRAU
COLOUR KEY
CLEAR
..
KLAR

R11170EN.DOC
R11170
DW217 - DW221 - DW226 - DW236 - DW246 - DW248 - DRILLS
BM12E - BM14E - BM15E - BM17E - BM18E - BM18EBT - DRILLS
Item 800 grease is supplied in 1 lb (0.454 Kg) containers
DW217 + BM12E = Distribute 8gms of grease in the gearcase
All other units = Distribute 22.5gms of grease in the gearcase
Item 9 bearing - Seal to face commutator, press to tubing on the armature shaft
Item 10 bearing - Press to shoulder
Item 19 sleeve - Lightly lubricate before installing into the fieldcase
Item 26 bearing - Press bearing until seated completely in the pocket. The rubber seal to face spindle and
gear assembly.

Brand: DeWALT
Category : Rotary Drills
Cat # : DW 248
SPECIFICATIONS
Power Input (Watts) 701
Power Output (Watts) 385
No Load Speed (RPM) 0-600
Load Speed (RPM) 0-350
Max. Cap. Metal (mm) 13
Max. Cap. Wood (mm) 35
Max. Torque (Nm) 57.3
Weight 1.6
BAR CODE COST PACKAGING SPECIFICATIONS
DW 248 Individual Carton Pallet
-QS 5011402284825 Shipping Weight (Kg) 2.4 Pallet Quantity 195
- CH 5011402285297 Carton Length (mm) 305 Pallet Weight (Kg) 468
- GB 5011402285303 Carton Width (mm) 260 Pallet Length (m) 1.22
- XW 5011402285310 Carton Height (mm) 76 Pallet Width (m) 1.02
Pallet Height (m) 1.18
FEATURES
• High Reliability for Heavy Duty Application
• Outstanding Drilling Speed
• Extremly Long Brush Life
• Spindle lock system for easy and quick bit change
• Anti Stalling Control for user safety
• Superior Ergonomic design for the best comfort
•
STANDARD EQUIPMENT
• Side Handle
•
•
•
MARKET AVAILABILITY JULY 1998
SOURCE Easton - USA
WHAT IS NEW ?
TOOL X
ATTACHM.
ACCESS.

Brand: DeWALT
Category : Rotary Drills
Cat # : DW 248
USER REQUIREMENTS FEATURE / BENEFITS
• Dramatically reduce the incidence of switch failure • New developed switch is more dust resistant, has new contacts
design and simply lasts longer
• Lower brush replacement frequency to reduce servicing • Brush durability is increased by 40% and lasts 20-40% more than
competition
• Product last longer at any working temperatures and for all applications • New global motor with greater overload capacity even at high
working temperatures
• Prevent the gear wearing in any working conditions • Rugged helical gears, big-sized teeth guarantee a robust design
with a reduction in wear-down under all conditions
• Avoid damage to components during product handling • Dual cord clamp system prevents the cord from being damaged
and also avoids any stress to the internal components when
carried by the cord itself
• High motor power and high torque to drive all screw types in all materials • The motor delilvers more power as a consequence of the new
square shape of the field lamination which makes the magnetic
field produced more effective. The unit produces the highest torque
in its category
• Light weight and robust design • The most compact and robust gearcase available to guarantee
high resistance and very low weight at the same time (best power
to weight ratio).
• Drill bits easy to replace; no bit slippage • The new spindle lock & new “one sleeve” keyless chuck gurantees
terrific gripping strength and an easy bit change
• High safety level at any working conditions • New innovative and patented electronic system (Anti Stalling
Control) to protect the user in case of bit stall and at the same time
allow to override the stall.
• Maximum comfort while using over extended period of time • Ergonomic soft pistol grip with a finger groove allows the user to
hold the tool just the way he wants and enhancing the best work-
effective working position while reducing muscle stress.
• The trigger size has been enlarged to easily allow a “real two
finger” operation. The location of the trigger gets the shortest
distance to the finger groove and the motor housing for easiest
operation.
• The low product weight and the superior compactness are
unmatched by competition.

Brand: DeWALT
Category : Rotary Drills
Cat # : DW 248
COMPETITIVE MATRIX
DeWALT
DW 248
Power Input (Watts) 701
Power Output (Watts) 385
No Load Speed (RPM) 0 - 600
Load Speed (RPM) 0 - 350
Max. Cap. Metal (mm) 13
Max. Cap. Wood (mm) 35
Max. Torque (Nm) 57.3
Weight (Kg) 1.6
Cat # Description Applicational Needs Barcodes Mft. Cost
ATTACHMENTS (for DW 248)
POSITIONING STATEMENT
The new patented Anti Stalling Control make the product unique. In addition to guarantee the maximum safety to the user in case of bit stall (the torque involved is extremely high),
this innovative electronic feature provide extra functional advantages to the product for particular applications (ie. It may act as a depth sensitive device or torque control).