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Makita HR2450F Technical Information

Rotary hammer 24mm (15/16")
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T
ECHNICAL INFORMATION
Model No.
Description
C
ONCEPT AND MAIN APPLICATIONS
The above models is the advanced version of HR2450,
equipped with LED job light for lighting up the drilling point.
S
pecification
Voltage (V)
110
120
220
230
240
Model No.
No load speed : (min
Blows per min : (min
Type of bit shank
Chuck ability
Drilling
capacity : mm ( " )
Single blow energy ( J )
Working mode
Variable switch
Clutch for protecting user from lock of bit
Reverse switch
LED job-light
Protection from electric shock
Cord length : m (ft)
Net weight : kg (lbs)
S
tandard equipment
* Stopper pole ........................................... 1 pc.
* Side grip ................................................. 1 pc.
* Plastic carrying case ............................... 1 pc.
< Note > The standard equipment for the tool shown may differ from country to country.
O
ptional accessories
* SDS plus TCT. bits 5.5mm(7/32") - 24mm)15/16")
* Drill chuck assembly
* Chuck adapter
* Chuck key S-13
* Drill chuck S-13
* Holder driver
* Dust cups 5 and 9
HR2450F
Rotary Hammer 24mm (15/16")
Current (A)
Cycle (Hz)
7.5
50 / 60
6.7
50 / 60
3.7
50 / 60
3.6
50 / 60
50 / 60
3.4
= rpm)
-1
= bpm).
-1
Steel
Wood
TCT. hammer bit
Concrete
Core bit
Diamond core
Dimensions : mm ( " )
Length ( L )
Height ( H )
Width ( W )
Continuous Rating (W)
Input
780
780
780
780
780
HR2450F
0 - 1,100
0 - 4,500
SDS - plus
10 (3/8)
13 (1/2)
32 (1-1/4)
24 (15/16)
25 (1) for North America
54 (2-1/8)
65 (2-9/16)
2.7
Rotation
3 modes
Rotation+Percussion
Percussion
Yes
Yes
Yes
Yes
by double insulation
4(13.1) 2.5(8.2) for Asia
2.4 (5.3)
* Safety goggle
* Bit grease
* Blow out bulb
* Core bits 32mm, 45mm, 54mm * Water protection collar
* Core bit
* Core bit adapter
* Rod
L
360 (14-1/8)
212 (8-3/8)
72 (2-13/16)
Max. Output(W)
Output
370
370
370
370
370
Dry
2.0(6.6) for Australia
* Dust extractor attachment
* Diamond core bits (dry)
32mm, 38mm, 54mm, 65mm
* Various taper shank TCT. bits
* Taper shank adapter
* Cotter
PRODUCT
P 1 / 18
H
W
650
650
650
650
650

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Summary of Contents for Makita HR2450F

  • Page 1 ECHNICAL INFORMATION PRODUCT P 1 / 18 Model No. HR2450F Description Rotary Hammer 24mm (15/16") ONCEPT AND MAIN APPLICATIONS The above models is the advanced version of HR2450, equipped with LED job light for lighting up the drilling point. Dimensions : mm ( " )
  • Page 2 P 2 / 18 eatures and benefits HR2450F In-line and ergonomical designed palm fitting soft grip Lock button on change lever for firmly holding the position of Built-in torque limiter selected mode Lock ON button Palm fitting soft grip Accepting SDS-plus shank bit...
  • Page 3 P 3 / 18 omparison of products Competitor A Competitor B Model No. MAKITA Specifications HR2450F HR2450 Power input : W No load 0 - 1,350 0 - 1,100 0 - 1,100 0 - 870 speed: min- rpm. Blows per...
  • Page 4 * Materials : Concrete with compressive 350Kg/cm2 strength, 350Kg/cm2 * Pressure added to the products : 80 N * Working mode : Rotary hammer Bit diameter : 6.5mm MAKITA HR2450F MAKITA HR2440 MAKITA HR2400 Competitor A Model A Bit diameter : 8.5mm...

  • Page 5: Table Of Contents

    < 1 > Lubrication Apply the following MAKITA grease to protect parts and product from unusual abrasion. * Grease RA No.1 (Brown) to the portions marked with black triangle * Grease FA No.2 to the portions marked with gray triangle...

  • Page 6: Cap 35

    P 6 / 18 epair < 2 > Disassembling chuck section 1. Slide chuck cover in the direction of gear housing, and pull out cap 35 by turning. See Fig. 1. 2. Take off ring spring 19. Then, the following parts can be disassembled from tool holder. See Fig. 1A. * Chuck cover * Ring 21 3.
  • Page 7 P 7 / 18 epair < 4 > Disassembling change lever 1. Separate cap from change lever. See Fig. 1. 2. Fully turn change lever in the direction of drill mode. Then, change lever can be pulled out from gear housing. See Fig.

  • Page 8: Piston Cylinder

    P 8 / 18 epair < 6 > Disassembling armature 1. Disassemble handle cover by unscrewing tapping screw 4 x 25. And disassemble carbon brushes as illustrated in Fig. 4. 2. Separate gear housing together with armature, from motor housing by unscrewing tapping screws 4 x 45 as illustrated in Fig.

  • Page 9: Spur Gear 51

    P 9 / 18 epair 5. Ring spring 28 can not be removed without pressing washer 30 down to the spur gear 51 side, because it is assembled between tool holder and washer 30. See Fig. 5B. 6. Disassemble ring spring 28 with retaining ring plier, pressing washer 30 down to the spur gear 51 side as illustrated in Fig.
  • Page 10 P 10 / 19 epair < 9 > Disassembling impact bolt 1. Referring to < 7 > Disassembling tool holder section at page 8 and 9, disassemble ring spring 28, washer 30, compression spring 31 and spur gear 51 from tool holder. See Fig. 5, Fig. 5A, B, C, D and E. 2.
  • Page 11 P 11 / 18 epair 4. Insert "No.1R236 Round bar for arbor" and push ring spring 28 as deep as possible to the inner housing side by striking the round bar for arbor as illustrated in Fig. 6C. 5. Pick up ring spring 28 with plier and take off it from tool holder as illustrated in Fig. 6D. 6.
  • Page 12 epair P 12 / 18 < 12 > Disassembling swash bearing 1. Referring to at page 8, disassemble the product in the order of Fig.4, Fig.4A and Fig.4B at page 8. And separate inner housing together with tool holder section and swash bearing section from gear housing as illustrated in Fig.

  • Page 13: Clutch Cam

    P 13 / 18 epair 6. Reassemble swash bearing section temporarily to gear housing, and hold gear housing as illustrated in Fig. 8H. So, swash bearing section tilts in the direction of arrow. Keeping the illustrated position, disassemble swash bearing section by striking the edge of gear housing with plastic hammer.
  • Page 14 < 14 > Assembling swash bearing section to piston cylinder 1. Apply MAKITA grease to piston cylinder and swash bearing 10 referring to < 1 > Lubrication at page 5. 2. Assemble 2 pcs. of flat washers 12 and piston joint to piston cylinder as illustrated in Fig. 11.
  • Page 15 9. Assemble compression spring 6 and flat washer 5 to the pin of inner housing. And fix them with stop ring E-5 as illustrated in fig. 11G. 10. Apply 55g of MAKITA grease RA No.1in gear housing. Change plate Change plate...
  • Page 16 < 16 > Assembling needle bearing complete 1. Apply MAKITA grease RA No.1 to the inside of needle baring complete. 2. Putting needle bearing complete on No.1R165 "Ring spring setting tool B" press gear housing onto the needle bearing complete with arbor press as illustrated in Fig. 13.
  • Page 17 P 17 /18 ircuit diagram Brush holder Color index of lead wires Brush holder Black White Connected to field ore Field Blue See-through Switch C1 C2 Power supply cord Light circiut Blue or red Noise suppressor For some countries, noise suppressor of two lead wire type is used, or noise suppressor is not used.
  • Page 18 P 18 / 18 iring diagram Fix field lead wire (black) with lead holder as per Fix field lead wire (black) the illustration. with lead holder as per the illustration. Fix noise suppressor's lead wire (see-through) with lead holder as per the illustration. Fix brush holder's lead wire (blue) and field lead wire (black)

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