Hitachi DH 22PH Manual

PRODUCT NAME
Hitachi Rotary Hammer
Model DH 22PH
[ NEW FEATURES ]
Most compact and lightweight in its
class
Hitachi’s own internal pressure
adjustment mechanism
The new Model DH 22PH is a 3-mode type of rotary hammer.
This model features ”hammering only” mode designed for chipping and groove digging, in addition to
”rotation + hammering” mode and ”rotation only” mode. The Model DH 22PH is equipped with a variable
lock mechanism available in ”hammering only” mode. The variable lock mechanism enables the tip angle
of a cold chisel or other tool to be selected from among 36 levels.
The main features of the Model DH 22PH are as follows:
(1) Although the Model DH 22PH is a 3-mode type rotary hammer, it is more compact and lightweight than the
2-mode type competitors in the same class (318 mm in overall length and 2.1 kg in weight).
(2) The internal pressure adjustment mechanism prevents grease from leaking.
LIST No. F407
Jun. 2009
(1) Rotation and hammering function
xDrilling anchor holes
xDrilling holes into concrete, tile, brick and similar materials
(2) Rotation only function
xDrilling holes in steel and wood (with chuck adapter)
xTightening and loosening machine screws and wood screws (with chuck adapter)
(3) Hammering only function
xLight-duty chiseling of concrete
xGroove digging and edging
MARKETING OBJECTIVE
APPLICATIONS
SELLING POINTS
International Sales Division
D
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) and model name(s) of our competitor(s). The symbol(s) utilized here is(are) as follows:
Competitors
Symbols utilized Company name Model name
B BOSCH GBH2-23RE
C MAKITA HR2230

CONTENTS
Page
SELLING POINTS ------------------------------------------------------------------------------------------------------------- 1
SPECIFICATIONS ------------------------------------------------------------------------------------------------------------- 2
1. Specifications----------------------------------------------------------------------------------------------------- 2
2. Optional Accessories------------------------------------------------------------------------------------------- 3
COMPARISON WITH SIMILAR PRODUCTS--------------------------------------------------------------------------- 8
1. Comparison of Specifications------------------------------------------------------------------------------------------------------- 8
2. Comparison of Drilling Speed -------------------------------------------------------------------------------- 9
3. Comparison of Chiseling Performance -------------------------------------------------------------------- 9
PRECAUTIONS ON SALES PROMOTION ----------------------------------------------------------------------------10
1. Safety Instructions ---------------------------------------------------------------------------------------------10
REFERENCE MATERIALS-------------------------------------------------------------------------------------------------11
1. Lubrication ------------------------------------------------------------------------------------------------------- 11
2. Tool Structure --------------------------------------------------------------------------------------------------- 11
3. "3-Mode" Changeover Mechanism ------------------------------------------------------------------------14
4. Drill Bits-----------------------------------------------------------------------------------------------------------16
5. Tool Retainer Section------------------------------------------------------------------------------------------17
6. Dust Collector (B) ----------------------------------------------------------------------------------------------17
REPAIR GUIDE----------------------------------------------------------------------------------------------------------------19
1. Precautions on Disassembly and Reassembly ---------------------------------------------------------19
STANDARD REPAIR TIME (UNIT) SCHEDULES--------------------------------------------------------------------30
Assembly Diagram for DH 22PH

-1-
318 mm
A
ir passage
(Outside the
gear cover)
Felt packing (B)
Valve
Felt packing (A)
(Inside the Gear cover)
Inner cover
A - A AA
Most compact and lightweight in its class*
Although the Model DH 22PH is a 3-mode type rotary hammer, it is more compact and lightweight than the
2-mode type competitors in the same class.
HITACHI
Maker
Model DH 22PH BC
Overall length 318 mm 342 mm 357 mm
Weight 2.1 kg 2.3 kg 2.5 kg
Hitachi’s own internal pressure adjustment mechanism
An air passage is provided as shown below to let out air inside the gear cover and let outside air in the gear
cover. This passage is sandwiched between felt packings to allow only air to pass. As a result, fluctuations
in internal pressure are minimized for stable hammering operation and preventing grease leakage.
SELLING POINTS
* Based on our own research

-2-
1. Specifications
Model DH 22PH
mm 22
Capacity: Concrete
Inch 7/8
mm 13/24
Capacity: Steel/Wood Inch 1/2” /1”
Input power W620
Impact energy J1.7
No-load rpm (Forward) min-1 0 to 1,400
No-load rpm (Reverse) min-1 0 to 910
Full-Load bpm min-1 0 to 5,600
Mode –3
Variable speed –YES
Reverse switch type –Push button
Handle No
Soft grip
Gear cover No
mm 318
Overall length
Inch 12 to 1/2”
No load vibration level
(Tri-axial, measured) m/s212.1
Full load vibration level
(Tri-axial, measured) m/s213.2
No load noise level
(measured) dB 95.2
Full load noise level
(measured) dB 89.4
kg 2.1
Weight lbs 4.6
SPECIFICATIONS

-3-
+
Effective length
Overall length
2. Optional Accessories
(1) Drilling anchor holes (rotation and hammering)
Drill bit (SDS-plus shank)
Outer dia.
(mm)
Overall
length
(mm)
Effective
length
(mm)
Code No. Outer dia.
(mm)
Overall
length
(mm)
Effective
length
(mm)
Code No.
4.0 303571 12.5 166 100 303592
4.3 303572 12.5 260 200 303607
4.5 303573 12.7 166 100 303593
4.8 303574 12.7 260 200 303608
5.0
110 50
303575 13.0 303594
5.0 160 100 303578 14.0 303595
5.5 303576 14.3
166 100
303596
6.0 110 50 303577 14.3 260 200 303609
6.0 303579 14.5 166 100 303597
6.4 303580 14.5 260 200 303610
6.5 303581 15.0 303598
7.0 303582 16.0 166 100 303599
7.5 303583 16.0 260 200 303611
8.0 303584 16.5 303600
8.5 303585 17.0 166 100 303601
9.0 303586 17.0 260 200 308485
9.5 303587 17.5 166 100 303602
10.0
160 100
303588 17.5 260 200 303612
10.0 260 200 303604 18.0 166 100 303603
10.5 160 100 303589 19.0 260 200 303613
10.5 260 200 303605 20.0 303614
11.0 160 100 303590 22.0 250 200 303615
12.0 166 100 303591
12.0 260 200 303606

-4-
++
(1) Drill bit (slender shaft) (2) Adapter for slender shaft
(SDS-plus shank)
(1) Drill bit (taper shank) (2) Taper shaft adapter
(SDS-plus shank)
(3) Cotter
++
++
Straight-shank bit for
impact drills
Rubber cap
13-mm hammer drill chuck
(SDS-plus shank)
Chuck wrench
Slender bit and adapter for slender shaft (SDS-plus shank)
(1) Drill bit (slender shaft) (2) Adapter for slender shaft
Outer dia.
(mm)
Overall length
(mm)
Effective length
(mm) Code No. Code No.
3.4 306369
3.5 90 45 306368 306370
Drill bit (taper shank)
(1) Drill bit (taper shank) (2) Taper shank adapter (3) Cotter
Outer dia. (mm) Code No. Type Code No. Code No.
1100
12.3
12.7
14.3
14.5
17.5
944460
944461
993038
944462
944500
944463
Morse taper No. 1 303617 944477
13-mm hammer drill chuck
Part name Code No.
13-mm hammer drill chuck (including chuck wrench and rubber cap) 303332
Chuck wrench 303334
Rubber cap 303335

-5-
+
Anchor setting adapter
(SDS-plus shank)
++
(2) Anchor setting (hammering only)
Anchor setting bar
Part name Overall
length (mm) Code No. Part name Overall length (mm) Code No.
W-1/4 Anchor setting adapter-A 260 302976 W-1/4 Anchor setting adapter-B 260 302979
W-5/16 Anchor setting adapter-A 260 302975 W-5/16 Anchor setting adapter-B 260 302978
W-3/8 Anchor setting adapter-A 160 303621 W-3/8 Anchor setting adapter-B 160 303622
W-3/8 Anchor setting adapter-A 260 302974 W-3/8 Anchor setting adapter-B 260 302977
Internal cone type External cone type
(3) Bolt placing operations with chemical anchor (rotation + hammering)
(Standard sockets available on the market) 12.7-mm (1/2”) Chemical anchor adapter (SDS-plus shank)
19-mm (3/4”) Chemical anchor adapter (SDS-plus shank)
Part name Code No.
12.7-mm (1/2”) Chemical anchor adapter 303044
19-mm (3/4”) Chemical anchor adapter 303045
(4) Crushing operation (hammering only)
Square bull point
(SDS-plus shank)
Code No. 316656
Bull point (round type)
(SDS-plus shank)
+
Code No. 303046
+

-6-
Cold chisel
(SDS-plus shank)
Code No. 316657
Cutter
(SDS-plus shank)
Code No. 316658
Grooving chisel
(SDS-plus shank)
Code No. 316659
+
+
+
Special screw Chuck adapter (G)
(SDS-plus shank)
Chuck wrench
13-mm drill chuck
(13VLRB-D)
++
NOTE:
To use the tool for tightening or loosening screws,
open the three jaws of the drill chuck and securely
fix the drill chuck to chuck adapter (G) with the
special screw (a left-hand threaded M6 screw) when
mounting the drill chuck onto chuck adapter (G).
+
Stamped bit No. Tip thickness
(5) Drilling holes and driving screws (rotation only)
Part name Code No.
Chuck adapter (G) 303623
13-mm drill chuck (with chuck wrench) 321814
Special screw (M6 left-hand threaded) 981122
(1) Cross-recessed head (Phillips) bit (2) Slotted-head (minus) bit
[Overall length: 65 mm] [Overall length: 70 mm]
(For use with cross-recessed head (Phillips) screw)) (For use with slotted-head (minus) screw))
Bit No. Code No. Applicable screw dia. (mm) Bit tip thickness Code No. Applicable screw
dia. (mm)
No. 2 983006 3 to 5 0.8 955659 4
No. 3 983011 6 to 8 *1 955674 5 to 6
* Temporary tightening

-7-
(6) Grease for hammer and hammer drill
(7) Dust cup and dust collector (B)
xContaining 500 g xContaining 30 g xContaining 70 g
Code No. 980927 Code No. 981840 Code No. 308471
Code No. 971787 Code No. 306885
xDust cup xDust collector (B)