Hitachi CL 10D2 Technical Data And Service Manual
POWER TOOLS
TECHNICAL DATA
AND
SERVICE MANUAL
CORDLESS STUD CUTTER
CL 10D2
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LIST No. F842 Jan. 2001
C
MODEL
CL 10D2
Notice for use
Specifications and parts are subject to change for improvement.
Refer to Hitachi Power Tool Technical News for further information.
Page
CONTENTS
1. PRODUCT NAME .........................................................................................................................1
2. MARKETING OBJECTIVE ...........................................................................................................1
3. APPLICATIONS............................................................................................................................1
4. SELLING POINTS ........................................................................................................................2
4-1. Selling Point Descriptions ............................................................................................................. 2
5. SPECIFICATIONS ........................................................................................................................7
5-1. Specifications................................................................................................................................ 7
5-2. Optional Accessories .................................................................................................................... 8
6. COMPARISONS WITH SIMILAR PRODUCTS ............................................................................9
6-1. Specification Comparisons ........................................................................................................... 9
7. PRECAUTIONS IN SALES PROMOTION .................................................................................10
7-1. Safety Instructions ...................................................................................................................... 10
7-2. Suggestions and Precautions for Efficient Use of Charger ......................................................... 14
8. REPAIR GUIDE ..........................................................................................................................15
8-1. Precautions in Disassembly and Reassembly ............................................................................ 15
8-2. Reassembly ................................................................................................................................ 21
8-3. Precautions in Disassembly and Reassembly of Battery Charger.............................................. 27
9. STANDARD REPAIR TIME (UNIT) SCHEDULES .....................................................................28
Assembly Diagram for CL 10D2
--- 1 ---
1. PRODUCT NAME
Hitachi 10 mm Cordless Stud Cutter, Model CL 10D2
2. MARKETING OBJECTIVE
One of the primary uses of studs is for hanging of electric cable racks, air-conditioning ducts, and plumbing pipes
and drains. Studs are usually sold in standard lengths of 1 to 3 meters, and must be cut to desired lengths in
accordance with installation needs. They are currently being cut by cut-off machines, disc grinders, or manual
hack saws, frequently require the use of files and grinders for deburring and finishing before they can be used.
The Model CL 10D2 is the upgraded version of the Model CL 10D and is easier to operate and less expensive
with the same features such as clean cutting without sparks, dust and noise, minimal damage to studs and easy
processing after cutting. Thanks to the weight reduction of the motor, decelerating and cutting mechanisms, the
Model CL 10D2 weighs only 3.2 kg even though it uses the 12 V battery while the Model CL 10D using the 9.6 V
battery weighs 3.4 kg. The Model CL 10D2 becomes low price thanks to renewing the manufacturing processes
and sharing components with other models. In addition, the Model CL 10D2 is capable of cutting up to 550 studs
per single charge (when cutting M10 soft steel studs using the 12 V NiMH battery with nominal capacity 3.0 Ah).
This is about 4 times the capacity of the Model CL 10D. The Model CL 10D2 can correspond to various
applications with the wide selection of cutters (M10, M8, M6 and W3/8) and
can be used anywhere since it is cordless.
3. APPLICA TIONS
Cutting of mild-steel studs
[Typical threaded stud applications]
Electric installation
•••••••••••••••••••
Suspension of luminaiers, cable racks, conduit pipes, etc.
Air-conditioning
•••••••••••••••••••••••
Suspension of air-conditioning ducts, exhaust ducts, etc.
Plumbing installation
••••••••••••••••
Suspension of feed and drain pipes
Fig. 1
1 to 3 m
M6 to M10
Fig. 2
(2) Suspension of air-conditioning ducts
(3) Suspension of feed and drain pipes in plumbing work
(1) Suspension of cable racks in electrical installation
Stud
Stud
Stud
Stud
--- 2 ---
4-1. Selling Point Descriptions
(1) Clean cutting without sparks, chips and noise
A safer and better working environment without fear of fire or scattering of chips and dust is ensured because the
Model CL 10D2 does not produce the chips, dust, and sparks unlike cut-off machines and disc grinders.
4. SELLING POINTS
Fig. 5 Clean shearing with Model CL 10D2
Fig. 3
Fig. 4 Cutting by cut-off machine
Excellent working efficiency
Clean cutting without sparks, chips and noise
24 mm minumum cutting length
Special steel made long service life cutter
Service life of cutters increased through
use of four cutting edges
Convenient stud mounting hole facilitates
cutting studs to specified lengths
Convenient hook facilitates
operation in high places
Cordless
Cam-operated auto-return mechanism
Lightweight 3.2 kg (7.05 lbs.)
(CL 10D: 3.4 kg (7.5 lbs.))
Shearing force: 2500 kg
Clean
cutting
Sparks
Chips
Noise
Minimal damage to studs permits easy processing
--- 3 ---
(2) Minimal damage to studs permits easy processing
Because of the special cutters employed, few burrs are caused during cutting, and nuts can be attached to the
studs smoothly and easily. Deburring can be done easily and quickly by means of the provided trimmer.
(3) Cordless
The length of a stud is basically determined by the various needs of the work site. If the ceiling is slanted, for
example, it is hard to determine appropriate lengths. In such a case, it is common to hang studs which are longer
than the required length, and mark and cut them off later. When mounting ducts, up to 20 studs can be cut at a
time at floor level (with a cut-off machine, for example). When mounting luminaiers, however, often only two studs
are cut in one spot. This means that the cut-off machine must be moved from one spot to another over a wide
area.
The Model CL 10D2 is compact, lightweight, and cordless, so it is easily transportable and particularly convenient
for cutting off hanged studs. In addition, it is capable of cutting up to 550 studs per single charge, so it has
sufficient operability to cut many studs at floor level as well.
(1) 20 to 30 % of studs are cut after being hanged.
Fig. 8 Illustration of stud cutting work
Fig. 6 Comparison of stud condition after cutting
Fig. 7 Deburring of stud with trimmer
2 to 3 mm
0.2 to 0.3 mm
Necessary torque: 5 kg-cm or below
Trimmer
Disc grinder
Cut-off machine
(2) 70 to 80 % of studs are cut at floor level.
[Stud cut with cut-off machine]
[Stud cut with Model CL 10D2]
Burr
--- 4 ---
Cutter (1)
4th
3rd2nd
1st
(4) Long service life through use of stud cutting edges
Because of the uniquely shaped cutters specially developed by HITACHI, each cutter has four (front, back, upper,
and lower) which can be used in turn for cutting studs. Each cutter is made of high wear-resistant, special steel,
and is capable of cutting up to 500 studs with each of its cutting edges. Accordingly, up to 2,000 studs can be cut
with appropriate use of the four cutting edges.
(5) Excellent working efficiency
In conventional cutting with a cut-off machine or disc grinder, considerable time is required for deburring after the
studs have been cut. In actual tests, the Model CL 10D2 is approximately three times more efficient than cut-off
machines or disc grinders.
Table 1. Cutting time comparison
Table 2. Number of studs that can be cut per battery charge
Fig. 9
Four cutting edges
Reverse cutters
by turning each,
top to bottom.
Cutter (2)
Reverse cutters
by turning each,
side to side.
Reverse cutter (1)
and cutter (2)
mounting positions.
Reverse cutters
by turning each,
top to bottom.
Type of cutting tool
Cordless stud cutter CL 10D2
Cordless stud cutter CL 10D
High-speed cut-off machine
Grinder
Hand saw
Cutting time
10
(sec.)
2.6 (M10)
2.4 (M10)
30 to 60
8
20
30
Stud size
M6
M8
W 3/8"
M10
Number of cuts per charge
EB 1230H
EB 12B
(Piece)
1270
850
850
570
550
370
620
410
--- 5 ---
(6) Minimum cutting length
As illustrated in Fig. 10, it is sometimes necessary to cut studs 30 mm or less from the ceiling surface when
installing fluorescent lamps in electrical installation work. The Model CL 10D2 permits cutting protruding studs to
a minimum length of 24 mm from the ceiling surface.
In addition, when installing ducts in air-conditioning equipment installation work, it may be necessary to enclose
the ducts with insulation (lagging) after installation to prevent the formation of dew. In such a case, studs must be
cut as short as possible so that they do not protrude from L-shaped angles, in order to prevent damage of the
lagging. As illustrated, the Model CL 10D2 permits cutting of studs within an L-shaped angle measuring 25 mm x
25 mm x 3 mm (t).
Fig. 10 Minimum cutting length
(7) Convenient hook facilitates operation in high places
When performing equipment installation work in high places, cutting of
hanging studs is often only one of several jobs that must be performed.
Accordingly, it is sometimes necessary to put the stud cutter aside and use
both hands for some other job. In such cases, the hook is very useful for
hanging the stud cutter from a nearby conduit, steel grounding material,
cable rack, or similar support when not in use.
30 mm or less
Fluorescent lamp fixture
L-shaped angle
25
Ceiling
Stud
Stud
Fig. 11 Convenient hook facilitates
operation in high places
Hook
Latch
--- 6 ---
(8) Convenient stud mounting hole facilitates cutting studs to specified lengths
The stud mounting hole is very convenient when cutting many studs to the same length at floor level. The
adjustable stud mounting hole permits mounting of M6 to M10 studs, and can be used as an accurate cutting
length guide for the full range of applicable studs. It can be used not only to align cutting lengths to the rear of the
main body, as shown in Fig. 12-(1), but also to align cutting lengths to the front of the main body, as shown in
Fig. 12-(2). The stud mounting hole is particularly convenient when it is necessary to cut several studs at the
same length from, for example, the surface of a ceiling.
Fig. 12-(1) Length alignment to rear of
main body
Fig. 12-(2) Length alignment to front
of main body
Fig. 12 Stud mounting hole facilitates cutting to specified lengths
(9) Cam-operated auto-return mechanism
After cutting, the cutter is forcibly returned (opened) by means of a plate cam commonly called a "return plate".
This mechanism prevents such malfunctions as the cutter becoming jammed and not returning.
Stud mounting hole
Specified-length guide stud
Specified-length
guide stud
--- 7 ---
Battery (Type EB 12B)
Capacity
Number of cuttings per battery charge (M10)
Cutting time
Type of motor
Enclosure
Type of switch
No-load stroke
Main body
Battery
5. SPECIFICATIONS
5-1. Specifications
Mild steel studs: M10, M8, M6 or W3/8"
550 cuts powered by Battery EB 1230H
2.3 (sec.)
DC magnet motor
Main body : Glass fiber reinforced polyamide resin
Battery: ABS resin
Charger: ABS resin
Trigger switch with forward/reverse changeover (with brake)
30/min.
3.2 kg (7.05 lbs.) (includes battery)
EB 1230H: 0.66 kg (14.6 lbs.), EB 12B: 0.67 kg (14.8 lbs.)
Corrugated cardboard box < W/Plastic case: 6.2 kg (13.7 lbs.)>
Standard accessories
W/Charger
Plastic case............................................................................ 1 pc.
Battery (EB 1230H or EB 12B) .............................................. 1 pc.
Charger (UC 14YF2).............................................................. 1 pc.
Hex. bar wrench..................................................................... 1 pc.
M8 cutter ass'y ....................................................................... 1 pc.
M8 trimmer ............................................................................. 1 pc.
Sealed cylindrical nickel-cadmium batteries
Nominal voltage: DC 12V
Nominal life: Charging/discharging approximately 1,000 cycles
(in case of Model UC 14YF2)
Nominal capacity: 2.0 Ah
Sealed cylindrical nickel-metal hydride batteries
Nominal voltage: DC 12V
Nominal life: Charging/discharging approximately 500 cycles
(in case of Model UC 14YF2)
Nominal capacity: 3.0 Ah
Battery (Type EB 1230H)
Sealed power source: Single-phase AC 50/60 Hz
Voltage: Depending on the order specification
Power input: 44 W
Charging system: Constant current charge with full wave phase control
Overcharge protection system: (1) Battery voltage detection (
2
V system)
(2) Battery surface temperature detection
(thermostat or thermistor)
(3) 120-minute timer
Output voltage: 7.2 V --- 14.4 V
Output current: 1.9 A
Charging time: Approx. 60 minutes (for B-type storage battery at 20˚C (68˚F))
Approx. 90 minutes (for H-type storage battery at 20˚C (68˚F))
Product weight: 1.3 kg
Operable ambient temperature range: 0˚C --- 40˚C (32˚F --- 104˚F)
The maximum allowable temperature of the EB 12B type battery is 60˚C
(140˚F) and the EB 1230H type battery is 45˚C (113˚F).
Charger (Type UC 14YF2)
Weight
Packaging and
packaged weight
--- 8 ---
Read pilot lamp
remains lit or flashes.
Green pilot lamp is lit.
Prior to charging
During charging
Charging completed
Charging not possible
High battery
temperature
Blinks
Lit
Blinks
Flickers
Lit
0.5 sec ON, 0.5 sec OFF
0.5 sec ON, 0.5 sec OFF
Stays ON constantly
Stays ON constantly
0.1 sec ON, 0.1 sec OFF
Storage battery or
charger is faulty.
Charging not possible
because storage battery
temperature is too high.
Pilot lamp indications (UC 14YF2)
5-2. Optional Accessories
Cutter ass'y
Stud size
Code No.
Combining cutters and spacers
M10 x 1.5
M10 Cutter 2
M10 Spacer 2
308565
*
W3/8" x 1.5875
M6 x 1
M8 x 1.25
308563
308564
M8 Cutter 2
M8 Spacer 2
M6 Cutter 2
M6 Spacer 2
W3/8" Cutter 2
998479
+
Trimmer
Stud size
Code No.
M10 x 1.5
308570
* W3/8" x 1.5875
M6 x 1
M8 x 1.25
308568
308569
308567
* The W3/8" is used without spacers.
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