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T ECHNICAL INFORMATION
Models No. HR1800
New Tool
Description Rotary hammer
CONCEPTION AND MAIN APPLICATIONS
Development of a compact and light weight
Rotary hammer with safe double insulation
which can be used for wood and iron by
mood changing mechanism.
Specifications
Voltage(V) Current(A) Cycle(Hz) Continuous rating input(W)
100 5.2 50-60 505
concrete(mm) 18mm
Max. drilling capability iron(mm) 10mm
wood(mm) 15mm
Blows per minute(/min) 0-3500/min
No load speed(R.P.M.) 0-1000/min
Overall Length(mm) 312mm
Net weight(kg) 3.0kg
Power supply cord(m) 5.0m
Standard equipment
Syringe 64 ----------------------------- for removing drilling dust
Dust collector ------------------------- for preventing drilling dust from scattering
Hexagon spanner(wrench) ---------- for disassembling crank housing
Cotter ---------------------------------- for replacing taper shank carbide drill
Taper shank carbide drill 6.5-90
Steel case ------------------------------ for storage of the unit
Optional accessories
Cotter -------------------for replacing taper shank carbide drill
Taper shank carbide drill ( All tapers are Morse taper No.1)
Drill Overall Drilling Note Drill Overall Drilling Note
diameter length effective diameter length effective
(mm) (mm) length(mm) (mm) (mm) length
(mm)
6.5 11 for anchor No.2
90 60
7.5 11.5
8.0 12 for anchor No.2.5
8.5 100 70 12.5 110 80
9.5 13.3
10 14.5 for anchor No.3
110 80
10.5 18 for anchor No.4
16 220 170 18 220 170
The standard equipment for the tools shown may differ form country to country
Anchor No.2( internal thread diameter 1/4")
No.2.5(as above 5/16")
No.3(as above 3/8")
No.4(as above 1/2")
Holder driver --------------- for driving anchor No.3, No.4
(in the case barrel stopper is at anchor tip) ,
Anchor drive rod ----------- Anchor drive ro No.2
No.2.5
Anchor drive rod for interior No.2
No.2.5
No.3
No.4
Drill chuck S10 for wood and iron drilling
Chuck key S10 for wood and iron drilling
Chuck adapter
Lock nut wrench 28 for removing crank cap
Syringe 64
Hexagon spanner 5
Makita grease H No.00(30g)
Features and benefits
1. Compact and light weight
Compactness, Light-weight(3.0kg), Handy shape These features of this product enable speedy drilling on floors
and walls as well as on ceilings. Also, reduced reaction at drilling helps to minimize workers' fatigue.
2. Grease-pack system
Completely closed grease-pack system adopted to this product saves the labor of frequently lubricating to the
inside of the machine. As MAKITA high grade grease is used for this grease-pack system, lubrication is not
necessary for long hours.
3. Variable speed change switch
As the desired rotation and striking can be attained by adjusting the switch lever, this is the most suitable for
drilling on breakable materials such as tiles and blocks.
4. Strike switching system
Push button for the strike stop system enables easy change of rotation / rotation + striking.
This function as well as variable speed change switch help to prevent misalignment of the center and to provide
smooth drilling on soft or breakable materials. By using optional accessories such as chuck adapter, drill chuck
S10 and chuck key S10, drilling up to 10mm on iron and 15mm on wood will be possible.
5. Safety clutch
Safety clutch of brake-lining type helps to protect workers and prevent machine damages by sudden load caused
when drill bit hit against reinforcing bars during drilling.
6. Dust collector
A dust collector, one of standard accessories helps worker to do their works efficiently and without causing
problems on their health because drilling dust does not fall on them or scatter.
7. Cut-off brush
When carbon brush has been worn to the level and ended its service term, electricity is automatically shut of. This
is the sign of the check time to prevent motor troubles.(use CB105 as carbon)
8. Adjustable rotary grip
Side grip which can be fixed freely in any angles as well as other features of this product( compact and light-
weight) make drilling work comfortable. Also, stopper pole on the grip helps to make drilling depth constant.
These features enable continuous and efficient works.
9. Double insulation
Adopting double insulation for electric safety will protect workers from accidents of electric shock.
Repair
Disassembly -Assembly
1. Tools
(+) driver
(-)driver
spanner 21
spanner 36
H exagon spanner(wrench) 5
M onkey spanner
L ock nut wrench R esin hammer( or wood hammer)
V ice
I ron hammer
2. Disassembly
a) To take off seal holder
Apply spanner 36 to hexagonal part of seal
holder and turn it to the right tapping by hammer
lightly. Then, seal holder will be loose.( This is a
left-handed screw.)
Left-handed screw
b) To take off barrel Tighten side grip firmly and tap the grip end of
the side grip by resin hammer to loosen barrel.
Then, turn it to the right.
In event that this way does not work, apply
Band monkey spanner to width across flat 48 under
the side grip band of the barrel and tap it lightly
to loosen barrel.
In the event screws of barrel and crank housing
have been loosened before taking off seal holder,
fix the hexagonal part of the seal holder to the
Side grip vice and follow the same way mentioned above.
Note) Take care that barrel will be deformed if
fixed to the vice too tight as it is made of
Left-handed screw aluminum.
c) To take off cylinder liner, holder 27-37, taper drill holder
Fix cylinder liner to vice with
Taper drill holder applying soft metal plates such as
Cylinder liner
Steel plate etc. steel plate.
Note) Be careful not to tighten too
much and not to press square key 4
Vice
directly at this time.
Holder 27-37
Spa
Seal holder nne
r 21
Protector Square key 4
Note) Square key 4 should not come onthe line A.
A Next, apply spanner 21 to width across
flat of holder 27-37 and turn it to the
left.
(This is right-handed screw.)
Then, pull out ball bearings to the
Vice Cylinder liner direction of the arrow shown in the
ketch and take out 3 steel balls 5.and 6.
Pull out holder 27-37 and seal holder in
order.
d) To take off crank shaft
Follow the right hand sketch for
Crank cap
disassembly.
Loosen crank cap by lock nut wrench
28( right-handed screw).
Push crank shaft from the crank cap
Crank housing side. Then, crank shaft will be
removed as shown in the sketch.
Pull out ball bearings by using arbor
press which are pressed in.
Pay special attentions to the following
Crank shaft points at this time;
*Don't lose flat washer 6 and 15 at
disassembly.
Torque limiter complete Steel ball 5,6
*Don't lose change pin as it may jump
Compression spring out.
Flat washer 6 Change pin
Ball bearing
Helical gear
Flat washer 15
* At disassembly of crank housing and gear housing, turn them upside down for easy work.
3. Assembly
Follow the opposite procedure of disassembly. Pay special attentions to the following points;
(1) Be cautious of handling of O-ring and oil seal as this is grease pack system. Apply a little of grease on them
before assembly.
(2) Make sure of left-handed screws(inverse screw) at disassembly and assembly between seal holder and barrel
between barrel and crank housing
(3) When inserting oil seal 14 to seal holder, make the level even to the end face of the seal holder. (If too
forward, it will contact to holder 27-37. If too backward, dust lip will be caught by drill holder.)
(4) When inserting oil seal 13 to gear housing, insert ball bearing to gear housing first and then, insert oil seal a
little deeper than the end face of gear housing.
(5) Ensure to assemble thrust bearing flat washer 15 for helical gear 29 ( insert to crank shaft)and flat washer 6 for
torque limiter complete. Missing these parts may cause loss of armature pinion gear and spiral bevel gear.
(2) (3) (4)
To make the level even
Left-handed screw Right-handed screw
To make the level even
(6) Use hexagon spanner for hexagon socket bolts for assembling motor housing. Be careful not to tighten too
much since it can fasten firmly compared with drivers.
(7) Lead wire removed from motor housing should put in the slot in the attachment position of handle R.
Slot