Hitachi CL 10D2 Handbuch

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

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. APPLICATIONS

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

--- 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

(sec.)

2.6 (M10)

2.4 (M10)

30 to 60

20 30

Stud size

W 3/8"

M10

Number of cuts per charge

EB 1230H

EB 12B (Piece)

1270

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

Ceiling

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 ( 2V 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

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