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Learned, Mother earth, Makita's "active" dynamic vibration absorber – Makita HR4511C User Manual

Page 2: Vibration absorbing grip, See the result of avt

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Principle of
Dynamic Vibration Absorber

Reinforcing bar

Reinforcing bar

Reinforcing bar

Piston

Striker

Sleeve

Air

Striker

Piston

THE MOTHER EARTH SOMETIMES QUAKES.

Time to reach ELV

Slide Chuck

:: push-in and Go
:: slide-back and Pull

Electronic control features

Variable speed control by dial Constant speed
control, Soft Start variable speed control

LED lamp

for indication of "Green"
:: being electrified of
"Blinking Red"
:: replacing of carbon brush

No Hammering

while Idling

ensures machine's long life.

Torque Limiter

when drill bit hits against
reinforcements,
Torque Limiter operates
to stop.

Change Lever

in protected position

for reduced possibility of
breakage even if the machine
is carelessly down to rest.

HR4511C

HR4510C

HR4501C

///

Active Dynamic Vibration Absorber

///

Active Dynamic Vibration Absorber

///

Vibration Absorbing Grip

Learned

from

the

Mother Earth

MAKITA's
"Active" Dynamic
Vibration Absorber

(HR4511C and HR4510C)

Extremely Comfortable

Easy and Very Comfortable

Easy and Comfortable

Easier to manage the exposure of vibration to body.
Easy operating Slide Lock-on Switch for hammering.

Easiest to manage the exposure of vibration to hands and arms.

Slide Lock-on switch leaves operators' fingers out of effort

to keep pulling trigger for long hours when hammering.

Selectable Switches

Hammering

Hammering

Hammering
with Rotation

Hammering
with Rotation

Vibration Absorbing Grip

(HR4511C only)

Spring

Hinge

Piston

Balancer

Air

Piston

Balancer

Air

Air

Air

Slide lock-on switch
for Hammering

Trigger switch for
Hammering and
Hammering with Rotation

Tool does not come with bit.

Tool does not come with bit.

Tool does not come with bit.

Shift of air pressure in crank room
and barrel room "actively"
controls balancer to move
opposite of piston.

Spring loaded
hinged grip absorbs vibration

16 Angle Settings

of Chisel bit

20

m/s

2

15

m/s

2

150min

200min

100min

213

min

133

min

47

min

37

min

42

min

37

min

53

min

50min

10

m/s

2

HR4511C

HR4510C

HR4501C

Competitor "H"

Competitor "B"

Competitor "D"

HR4500C

Comparison of Vibration level* and Time to reach
ELV (Exposure Limit of Vibration)**

*It is known as the tri-axial value and value at Directive of A(8).
**It means the maximum amount of vibration that an operator may be exposed to on any single day.

Vibration level

See the Result of AVT

Longer life of Carbon brushes

features twice as long as that of Predecessor
model by employing large carbon brush.

Auto Cut-Out

Carbon Brush

protects commutator and
indicates time for
maintenance.

Rubberized Soft Grip

provides more control and
comfort while minimizing
hand fatigue and pain.

How to generate

POWER

How to manage

VIBRATION

How to bring you COMFORT

7.5

m/s

2

9.5

m/s

2

16

m/s

2

18.0

m/s

2

17.0

m/s

2

18.0

m/s

2

15.0

m/s

2

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