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STANDARD ACCESSORIES

(1) Case ............................................................................. 1
(2) Side Handle ................................................................ 1
(3) Stopper ........................................................................ 1
(4) Hammer Grease A .................................................... 1
Standard accessories are subject to change without
notice.

OPTIONAL ACCESSORIES (sold separately)

1. Through-hole drilling (Ro Hammering)

(1) Drill bit (SDS max shank)

  Adapter for SDS-plus shank bit

3. Large dia. hole boring (Ro Striking)

(1) Drill bit

(SDS-plus shank)

(2) Adapter for SDS-plus

shank bit
(SDS max shank)

(2) Core

bit

(3) Core bit

shank

(Guide
plate)

(1) Center

pin

(3) Cotter

(1) Drill bit (taper shank)

External dia.: 11, 12.3, 12.7,

14.3, 14.5,
17.5 mm

(2) Taper shank

adapter
(SDS max shank)

SPECIFICATIONS

*Be sure to check the nameplate on product as it is subject to change by areas.

Model

DH50MRY

DH50MR

Voltage (by areas)*

(110V, 115V, 120V, 127V, 220V, 230V, 240V) 

Power input

1400 W*

Capacity

Drill bit: 50 mm

Core bit: 160 mm

No load speed

110 – 230 min

-1

Full-load impact rate

1050 – 2150 min

-1

Weight (without cord, side handle)

10.5 kg

10.0 kg

Outer diameter (mm)

Overall length (mm)

16

340,

540

19

22

320,

520

25

28

32

370,

570

38

40

Taper shank

Application drill bit

adapter

Morse taper

Drill bit (taper shank)

(No. 1)

11, 12.3, 12.7, 14.3, 14.5, 17.5 mm

ROTARY HAMMER SAFETY WARNINGS

1.

Wear ear protectors.

Exposure to noise can cause hearing loss.

2.

Use auciliary handle(s), if supplied with the tool.

Loss of control can cause personal injury.

3. 

Hold power tool by insulated gripping surfaces,

when performing an operation where the cutting
accessory may contact hidden wiring or its own
cord.

Cutting accessory contacting a "live" wire may make
exposed metal parts of the power tool "live" and
could give the operator an electric shock.

4.

Do not touch the bit during or immediately after
operation. The bit becomes very hot during
operation and could cause serious burns.

5.

Before starting to break, chip or drill into a wall,
floor or ceiling, thoroughly confirm that such items
as electric cables or conduits are not buried inside.

6.

Always hold the body handle and side handle of
the power tool firmly. Otherwise the counterforce
produced may result in inaccurate and even
dangerous operation.

7.

Wear a dust mask
Do not inhale the harmful dusts generated in
drilling or chiseling operation. The dust can
endanger the health of yourself and bystanders.

2. Anchor hole drilling (Ro Hammering)

  Drill bit (Taper shank)

 01Eng_DH50MRY_ENG

7/18/13, 8:54 AM

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Summary of Contents for DH 50MR

Page 1: ...using this Electric Power Tool carefully read through these HANDLING INSTRUCTIONS to ensure efficient safe operation It is recommended that these INSTRUCTIONS be kept readily available as an important reference when using this power tool 001Cover_DH50MRY_ENG 07 8 8 19 08 1 ...

Page 2: ... picking up or carrying the tool Carrying power tools with your finger on the switch or energising 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 attached to a rotating part of the power tool may result in personal injury e Do not overreach Keep proper footing and balance at all times This enables b...

Page 3: ...rill bit taper shank No 1 11 12 3 12 7 14 3 14 5 17 5 mm ROTARY HAMMER SAFETY WARNINGS 1 Wear ear protectors Exposure to noise can cause hearing loss 2 Use auciliary handle s if supplied with the tool Loss of control can cause personal injury 3 Hold power tool by insulated gripping surfaces when performing an operation where the cutting accessory may contact hidden wiring or its own cord Cutting a...

Page 4: ...accessories PRIOR TO OPERATION 1 Power source Ensure that the power source to be utilized conforms to the power requirements specified on the product nameplate 2 Power switch Ensure that the power switch is in the OFF position If the plug is connected to a power receptacle while the power switch is in the ON position the power tool will start operating immediately which could cause a serious accid...

Page 5: ...ry Fig 5 Tool shank Grease Tool Part of SDS max shank Front cap Grip Dial Fig 1 2 To attach the tool SDS max shank insert it into the hole until it contacts the innermost end of the hole as illustrated in Fig 2 If you continue to turn the tool with slight pressure you can feel a spot where there is a hitch At that spot pull the grip to the direction of an arrow mark and insert the tool all the way...

Page 6: ...ammering 1 Switching to hammering a Push the button release lock and turn the selector lever counterclockwise b Align of the selector lever and of the lever holder as illustrated in Fig 7 c Release the button to lock the selector lever Fig 7 Fig 8 c Turn the grip as illustrated in Fig 9 and fix the tool to the desired working direction Fig 9 d Switch the selector lever to hammering according to th...

Page 7: ...s such as drill chuck and chuck adapter are attached Use it with the selector lever positioned at rotation hammering CAUTION During operation be sure to grip the handle and the side handle firmly to prevent your body from swaying 1 Switching to rotation hammering For switching to rotation hammering follow the same procedures mentioned in 3 When drilling at rotation hammering 2 Attaching chuck adap...

Page 8: ...t tip When the position of the concave is shifted by turning the guide plate right or left the guide plate never slips off even when the drill is used in a downward direction Fig 17 Fig 17 2 Drilling holes 1 Insert the plug into a receptacle 2 A spring is built in the center pin By straightly and gently pressing it to the wall or floor surface the entire surface of the core bit tip attains contact...

Page 9: ...s abrasion is noted 2 Inspecting the mounting screws Regularly inspect all mounting screws and ensure that they are properly tightened Should any of the screws be loose retighten them immediately Failure to do so could result in serious hazard 3 Maintenance of the motor The motor unit winding is the very heart of the power tool Exercise due care to ensure the winding does not become damaged and or...

Page 10: ...10 DH50MRY 02Back_DH50MRY_ENG 07 8 8 19 06 10 ...

Page 11: ...NAL 1 72 TERMINAL 1 73 CORD ARMOR 1 ITEM NO PART NAME Q TY 74 TAPPING SCREW W FLANGE D4 16 4 75 CORD CLIP 1 76 CORD 1 77 CYLINDER O RING I D 69 3 1 78 RETAINING RING FOR D12 SHAFT 1 79 CRANK SHAFT 1 80 FEATHER KEY 3 3 25 1 81 RETAINING RING FOR D47 HOLE 1 82 BALL BEARING 6204DDCMPS2L 1 83 O RING B 1 84 OIL SEAL 1 85 HEX SOCKET HD BOLT W FLANGE M5 16 4 86 CRANK COVER 1 87 CYLINDER O RING B 2 88 WEI...

Page 12: ...12 DH50MR 02Back_DH50MRY_ENG 07 8 8 19 06 12 ...

Page 13: ...SOCKET HD BOLT M5 16 6 68 DISTANCE PIECE B 4 69 TAPPING SCREW W FLANGE D4 25 3 70 SWITCH B 1 71 PILLAR TERMINAL 1 72 TERMINAL 1 73 CORD ARMOR 1 ITEM NO PART NAME Q TY 74 TAPPING SCREW W FLANGE D4 16 4 75 CORD CLIP 1 76 CORD 1 77 CYLINDER O RING I D 69 3 1 78 RETAINING RING FOR D12 SHAFT 1 79 CRANK SHAFT 1 80 FEATHER KEY 3 3 25 1 81 RETAINING RING FOR D47 HOLE 1 82 BALL BEARING 6204DDCMPS2L 1 83 O ...

Page 14: ...14 02Back_DH50MRY_ENG 07 8 8 19 06 14 ...

Page 15: ...15 02Back_DH50MRY_ENG 07 8 8 19 06 15 ...

Page 16: ...308 Code No C99166612 N Printed in Japan Hitachi Koki Co Ltd Shinagawa Intercity Tower A 15 1 Konan 2 chome Minato ku Tokyo Japan 02Back_DH50MRY_ENG 7 19 13 4 06 PM 16 ...

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