Hitachi WH10DL Gebrauchsanweisung

Tightening/loosening of small screws, tapping screws, wood screws, Teks screws, Hex screws, etc.

Tightening/loosening of bolts, nuts, etc.

Drilling into wood and other materials (with use of the optional accessory drill chuck adapter set)

PRODUCT NAME

Hitachi 10.8 V Cordless Impact Driver

Model WH 10DL

[ NEW FEATURES ]

Lightweight and compact body (139 mm in

length and 0.9 kg in weight)

Thin handle (comfortably fits in the palm of the

operator's hand)

Optimally balanced design with the center of

gravity maintained at the center of the grip

Powerful tightening torque 105 N•m

Battery level warning lamp

Multiple battery protection circuits for safety

Equipped with 10.8-V lithium-ion battery

Replaceable carbon brushes

The new cordless impact driver Model WH 10DL is equipped with the newly developed 10.8-V lithium-ion

battery. Features of the Model WH 10DL include the following.

(1) Easy to handle thanks to the most compact body in its class.

(2) Thin handle comfortably fits in the palm of the operator's hand.

(3) Optimally balanced design with the center of gravity maintained at the center of the grip (palm of the

operator's hand)

(4) Highest tightening torque in its class in spite of the compact body

(5) Battery level warning lamp

With the new Model WH 10DL, we aim to expand our market share.

LIST No. H802

Mar. 2008

MARKETING OBJECTIVE

APPLICATIONS

SELLING POINTS

International Sales Division

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

REMARK:

For more information about HANDLING INSTRUCTIONS, visit our website at:

http://www.hitachi-koki.com/manual_view_export/

Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s) is(are) used in the place of

company name(s) of our competitor(s). The symbol(s) utilized here is(are) as follows:

Competitors

Symbols Utilized

Company Name Model Name

B BOSCH GDR10.8V-LI

C Makita TD090DWX

CONTENTS

Page

SELLING POINT DESCRIPTIONS-----------------------------------------------------------------------------------------1

SPECIFICATIONS --------------------------------------------------------------------------------------------------------------4

COMPARISONS WITH SIMILAR PRODUCTS--------------------------------------------------------------------------5

1. Specification comparisons--------------------------------------------------------------------------------------5

2. Tightening torque -------------------------------------------------------------------------------------------------6

3. Tightening time----------------------------------------------------------------------------------------------------9

4. Per-charge working capacity comparison ------------------------------------------------------------------9

PRECAUTIONS IN SALES PROMOTION------------------------------------------------------------------------------10

1. Safety instructions --------------------------------------------------------------------------------------------- 10

2. Tightening torque inspection prior to operation ---------------------------------------------------------12

3. Tightening torque variation----------------------------------------------------------------------------------- 12

4. Precautions for efficient use of charger and battery ---------------------------------------------------13

5. Other precautions ----------------------------------------------------------------------------------------------13

REPAIR GUIDE----------------------------------------------------------------------------------------------------------------14

1. Precautions in disassembly and reassembly ------------------------------------------------------------ 14

2. Precautions in disassembly and reassembly of battery charger ------------------------------------23

STANDARD REPAIR TIME (UNIT) SCHEDULES--------------------------------------------------------------------24

Assembly diagram for WH 10DL

-1-

*: Based on our own research

Lightweight and compact body

The Model WH 10DL is easy to handle and convenient for operation in narrow places thanks to the most

compact body in its class*. It is pocketable and easy to carry.

Maker • Model HITACHI

WH 10DL CB

Overall length (mm) 139 155 166

Weight (kg) 0.9 0.92 1.0

Thin handle

The handle section has only one cell in order to realize a thin and

easy-to-grip handle. The handle comfortably fits in the palm of the

operator's hand. The Model WH 10DL is suitable for continuous

operation because it minimizes operator's fatigue.

Maker • Model HITACHI

WH 10DL CB

Perimeter of grip (mm) 130 155 155

Optimally balanced design with the center of gravity maintained at

the center of the grip

The Model WH 10DL provides excellent operability thanks to the optimally balanced design with the center

of gravity maintained at the center of the grip (palm of the operator's hand). It is easily operable in upward,

sideways or downward direction with minimum operator's fatigue.

SELLING POINT DESCRIPTIONS

HITACHI

WH 10DL

Perimeter of grip

Center of

gravity

Center of

gravity

Center of

gravity

-2-

Powerful tightening torque 105 N

•

The Model WH 10DL provides the highest tightening torque in its class in spite of the compact body.

Maker • Model HITACHI

WH 10DL CB

Tightening torque (N•m) 105 (114) 90 (104) 100 (98)

* The values in parentheses mean the actually measured values when tightening M12 high-strength bolts

with a hexagon socket for 3 seconds. Please note that the above data are intended for reference

purposes only because the actual values may vary slightly depending on hardness of workpieces,

diameter of thread, ambient temperature, characteristics of the battery, etc.

Battery level warning lamp

The battery level can be checked by pulling the

trigger switch while the power tool is in a no-load

state. The battery level warning lamp lights when the

battery power is very low. If this happens, charge the

battery immediately.

Multiple battery protection circuits for safety

The Model WH 10DL is equipped with the multiple battery protection circuits for safe and economical

operation with the long-life battery.

Protection circuit Overcurrent

protection

Overheat

protection

Overdischarge

protection

Overcharge

protection

HITACHI Provided Provided Provided Provided

B Provided Not provided Not provided Provided

C Not provided Not provided Not provided Provided

* While B's protection circuits monitor all the cells at once, the Model WH 10DL's circuits monitor each cell

for safer operation.

-3-

Model UC 10SFL charger

Type BCL 1015 battery

Equipped with 10.8-V lithium-ion battery (Type BCL 1015)

The newly developed Type BCL 1015 lithium-ion battery (10.8 V, 1.5 Ah) can be fully charged by the Model

UC 10SFL charger in about 40 minutes.

The Type BCL 1015 battery is equipped with the overdischarge protection circuit, overload protection circuit,

battery overheat protection circuit and voltage monitoring circuit for each cell to prevent reduction of the

battery life due to overdischarge (overuse) or overcharge (excessive charging). This battery is safe thanks

to these protection circuits.

Precautions for use of the Type BCL 1015 lithium-ion battery

The Type BCL 1015 lithium-ion battery is equipped with a protective function that automatically stops

output to extend the battery life. The motor may stop automatically in any of the following cases (1), (2) and

(3) even if the switch is depressed continuously during operation. This is because the protective function is

activated and the battery is not faulty.

Protective

function Cause of trouble Countermeasure

(1) Overdischarge

protection circuit Battery voltage is decreased to about 6 V. Charge the battery immediately.

(2) Overload

protection circuit Heavy-duty work Release the switch and eliminate

the cause of the overload problem.

(3) Battery overheat

protection circuit Continuous operation or heavy-duty work Remove the battery from the tool

and cool it down.

Replaceable carbon brushes

The carbon brushes are externally mounted and replaceable. Thus the Model WH 10DL is economical

because the motor has a long life. The carbon brushes of B and C are not replaceable because they are

internally mounted.

-4-

1. Specifications

Model WH 10DL

Capacity

Small screw M4 to M8 (5/32” to 5/16”) *1

Ordinary bolt M5 to M12 (3/16” to 15/32”)

High-strength bolt M5 to M10 (3/16” to 3/8”)

Tightening torque 105 N•m (1,070 kgf•cm, 930 in-lbs.) *2

Tip condition 6.35 mm (1/4”) bit holder

Type of motor Fan cooled rare-earth magnet motor

Main body

Glassfiber reinforced polycarbonate resin and themoplastic elastomer

------------------------- Housing

Aluminum alloy die casting------------------------------------------ Hammer case

Battery Polycarbonate resin (black)

Enclosure

Charger ABS resin (black)

Type of switch Trigger switch with forward/reverse changeover pushing button (with brake)

Handle configuration T-type

No-load rotation speed 0 to 2,300 min-1

Impact rate 0 to 3,000 min-1

Weight 0.9 kg (2.0 lbs.) (Including battery) *3

Overall length x height 139 mm (5-15/32”) x 204 mm (8-1/32”)

Center height 26.5 mm (1-1/16”)

Battery

(Type: BCL 1015)

Sealed cylindrical lithium-ion battery

Nominal voltage: DC 10.8 V

Nominal life: Charging/discharging approximately 1,000 cycles

(in the case of the Model UC 10SFL charger)

Nominal capacity: 1.5 Ah

Charger

(Model UC 10SFL)

•Overcharge prevention system:

(1) Stop current detection

(2) Battery surface temperature detection (thermostat or thermistor)

•Input capacity: 35 W

•The maximum allowable temperature of the Type BCL 1015 battery is 50°C

(122°F).

•Indication method: Pilot lamp indicates the charging state.

•Pilot lamp: On ----- During charging

Off----- Charging completed

*1: M3 (1/8”) tapping screws and wood screws are the smallest screws that can be tightened.

*2: This torque is based on tightening an M12 (9/16”) bolt (strength grade: 12.9) for 3 seconds with a

hexagon socket.

*3: Main body does not include accessory tools (hexagonal bit etc.).

SPECIFICATIONS

-5-

(Superior specifications: )

1. Specification comparisons

Maker HITACHI

Model WH 10DL

B C

Small screw mm M4 to M8

(5/32” to 5/16”)

M4 to M8

(5/32” to 5/16”)

Ordinary bolt M5 to M12

(3/16” to 15/32”)

M4 to M12

(5/32” to 15/32”)

M5 to M12

(3/16” to 15/32”)

Capacity

High-strength bolt M5 to M10

(3/16” to 3/8”)

M4 to M10

(5/32” to 3/8”)

M5 to M10

(3/16” to 3/8”)

Max. tightening torque N•m

105

(1,070 kgf•cm,

930 in-lbs.)

100

(1,020 kgf•cm,

885 in-lbs.)

(920 kgf•cm,

795 in-lbs.)

No-load rotation speed min-1 0 to 2,300 0 to 1,800 0 to 2,400

Impact rate min-1 0 to 3,000 0 to 3,000 0 to 3,000

Overall length x height mm 139 x 204

(5-15/32” x 8-1/32”)

166 x 169

(6-17/32” x 6-5/8”)

155 x 178

(6-1/8” x 7”)

Main body weight kg 0.9 (2.0 lbs.) 1.0 (2.2 lbs.) 0.92 (2.0 lbs.)

Tool tip mounting system Driver chuck Driver chuck Driver chuck

Type of switch

Variable speed switch

with forward/reverse

changeover lever

Variable speed switch

with forward/reverse

changeover lever

Variable speed switch

with forward/reverse

changeover lever

Type of motor DC magnet DC magnet DC magnet

Type BCL 1015

BL 1013

Nominal capacity Ah 1.5 1.3 1.5

Nominal voltage V 10.8 10.8 10.8

Battery

Ambient temperature °C0 to 40

Model UC 10SFL AL1130V DC10WA

Power input capacity W 35

Charger

Recharging voltage V 10.8 10.8 10.8

COMPARISONS WITH SIMILAR PRODUCTS

-6-

2. Tightening torque

(1) Tightening torque characteristic comparisons

Test conditions

Bolt: M12 x 45 mm, high-strength bolt

Steel plate: SS34P

Thickness 25 mm

Accessory tool: Hexagon socket

(length: 40 mm,

width across flat: 19 mm)

WH 10DL

-7-

(2) Diameter of thread and appropriate tightening torque

Generally speaking, the appropriate tightening torque for a screw can be determined by the strength

grade of the screw or the material tightened. Following tables list data relative to the strength grade of

various screws and the appropriate tightening torque. For reference, appropriate tightening torque is

calculated with the following formula.

T = k•d•p

T: Appropriate tightening torque (kgf•cm)

d: Nominal diameter of thread (mm)

p: Recommended axial tightening force to be applied to the screw (kgf)

p = Rated axial stress (kgf/mm2) x 0.8 x Effective sectional area of thread (mm2)

k: Torque coefficient (0.17)

• Strength grade and rated axial stress of thread

Strength grade 4.8 6.8 8.8 12.9

Rated axial stress

(kgf/mm2)29.1 43.7 58.2 95

Material Mild steel Alloy steel including Ni, Mn, Cr, etc.

Heat treatment Not processed Processed: Hard material

• Diameter and effective sectional area of thread

Kind of thread

x pitch

M5 x 0.8 mm

(3/16”)

M6 x 1 mm

(1/4”)

M8 x 1.25 mm

(5/16”)

M10 x 1.5 mm

(3/18”)

M12 x 1.75 mm

(15/32”)

M14 x 2 mm

(9/16”)

M16 x 2 mm

(5/8”)

Effective

sectional area of

thread (mm2)

14.2 20.1 36.6 58.0 84.3 115 157

• Diameter of thread and appropriate tightening torque

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