Makita HR2452 Page 17 Technical Information Download

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ircuit diagram

P 17 / 19

Model HR2450 with reverse switch

Model HR2451, HR2452 without reverse switch

Color index of lead wires

Black
White

Red

Blue

See-through

Color index of lead wires

Black

Red

Blue

See-through

Noise suppressor

Switch

Noise suppressor

Power supply cord

Brush holder

Connected
to field ore

For some countries, noise
suppressor of two lead wire
type is used, or noise suppressor
is not used.

Summary of Contents for HR2452

Page 1: ... with single speed switch without reverse switch 7 5 6 7 3 7 3 6 3 4 50 60 780 370 650 650 650 650 650 780 370 780 370 780 370 780 370 50 60 50 60 50 60 50 60 Stopper pole 1 pc Side grip 1 pc Plastic carrying case 1 pc Model No HR2450 HR2451 HR2452 Bit type SDS max SDS plus SDS top Spline Hex Blows per min bpm min 1 No load speed min 1 rpm Protection from electric shock Net weight Kg lbs Cord leng...

Page 2: ...R2452 Built in torque limiter Palm fitting soft grip Change lever for 3 mode settings Rotation only Rotation Percussion Percussion only Lock button on change lever for firmly holding the position of selected mode In line and ergonomical designed palm fitting soft grip Equipped with reverse switch only HR2450 Lock ON button Practical positioning chisel angle desired 40 positions without using chise...

Page 3: ...2 7 4 0 13 1 2 Modes R R P 0 1 100 1 100 0 4 500 4 500 24 15 16 54 2 1 8 65 2 9 16 13 1 2 32 1 1 4 352 13 7 8 72 2 13 16 204 8 2 3 5 1 SDS plus 9 by double insulation 620 2 2 4 0 13 1 3 Modes R R P P 0 870 870 0 4 850 4 850 24 15 16 68 2 11 16 80 3 1 8 13 1 2 32 1 1 4 360 14 1 8 SDS plus 10 99 102 by double insulation 620 2 2 5 0 16 4 3 Modes R R P P 0 1 350 0 4 400 24 15 16 50 2 120 4 3 4 13 1 2 ...

Page 4: ...er Bit diameter 6 5mm MAKITA HR2400 MAKITA HR2440 MAKITA HR2450 Bit diameter 8 5mm Comparison in drilling 0 50 100 100 100 110 110 100 150 MAKITA HR2400 MAKITA HR2440 MAKITA HR2450 0 50 100 150 Bit diameter 12 5mm MAKITA HR2400 MAKITA HR2440 MAKITA HR2450 0 50 100 150 105 105 85 80 105 105 70 100 Bit diameter 32 0 mm MAKITA HR2400 MAKITA HR2440 MAKITA HR2450 0 50 100 150 Testing conditions Materia...

Page 5: ...r contacts The portion where inner housing contacts Inner portion where striker contacts The portion where piston joint is assembled Inner portion where tool holder contacts The groove where O ring 68 is assembled Inner portion where cam shaft contacts The surface where helical gear 26 contacts The portion where balls are installed Convex portion of cam Spiral portion The hole where cam shaft cont...

Page 6: ...d assemble cap 35 by turning See Fig 1 Chuck cover Ring 21 3 Take off steel ball 7 0 with which guide washer and conical compression spring 21 29 are held See Fig 1A Then guide washer and conical compression spring 21 29 can be disassembled from tool holder See Fig 1B Fig 1 Fig 1A Fig 1B Cap 35 Chuck cover Ring spring 19 Chuck cover Ring 21 Steel ball 7 0 Gear housing Guide washer Conical compress...

Page 7: ... to the original position of change lever by pressing to gear housing side 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 2A and Fig 2B Cap Gear housing Cap Gear housing Gear housing Lock button Compression spring 3 Fig 2 Fig 2A Fig 2B Fig 2C Change lever ...

Page 8: ...45 4 pcs Brush holder Brush holder Gear housing Motor housing Gear housing Inner housing Plastic hammer No 1R269 Bearing extractor small Ball bearing Armature 7 Disassembling tool holder section 1 Disassemble change lever from gear housing as mentioned in 4 Disassembling change lever at page 7 2 Separate gear housing from motor housing as illustrated in Fig 4 and Fig 4A And disassemble armature as...

Page 9: ...ng 31 Washer 30 Round bars for arbor Ring spring 28 Retaining ring plier Retaining ring plier No 1R306 Ring spring extractor 8 Assembling tool holder section 1 Apply grease to spur gear 51 and tool holder referring to 1 Lubrication at page 5 2 Assemble spur gear 5 compression spring 31 and washer 30 to tool holder as illustrated in Fig 5E 3 Pressing the washer 30 down to the spur gear 51 side with...

Page 10: ...pring 28 showing its cut portion Ring spring Push the cut portion to the out side of the hole Push out ring spring 28 from the inner groove O ring case O ring case Fig 6 Fig 6A Inner housing side Inner housing side Cap 35 side Cap 35 side 3 Hold tool holder with No 1R038 Armature holder and vise Insert screwdriver between ring spring 28 and O ring case and push out ring spring 28 from the inner gr...

Page 11: ...g 6C Fig 6D Ring spring 28 Fig 6E O ring case equipped with O ring 9 O ring 15 Ring 9 Impact bolt equipped with O ring 12 10 Assembling impact bolt 1 Apply grease to the O rings referring to 1 Lubrication at page 5 O ring 9 for O ring case O ring 15 O ring 12 for impact bolt 2 Insert impact bolt ring 9 O ring 15 and O ring case with O ring 9 into tool holder as illustrated in Fig 6E 3 Assemble rin...

Page 12: ...bearing section Swash bearing section Fat washer 5 Compression spring 6 Stop ring E 4 Pin of inner housing Piston cylinder 3 Disassemble stop ring E 4 flat washer 5 and compression spring 6 with which change plate is fixed from the pin of inner housing as illustrated in Fig 8E 4 Swash bearing section is held in inner housing with bearing retainer which is fastened with 2 pcs of hex socket head bol...

Page 13: ... ball bearing 608ZZ with bearing extractor as illustrated in Fig 9A 3 Disassemble flat washer 8 and bearing retainer as illustrated in Fig 9B 4 Disassemble helical gear 26 by pressing with arbor press as illustrated in Fig 9C Fig 8H 1R022 Bearing extractor plate 1R023 Bearing extractor ring Ring 8 Ring 8 1R236 Round bar for arbor 1R236 Round bar for arbor Ball bearing 608ZZ Flat washer 8 Bearing r...

Page 14: ...Ball bearing 608ZZ Bearing retainer Ring 8 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 3 Insert the above piston cylinder into inner housing as illustrated in Fig 11A 4 Bringing piston cylinder to the dead point for swash bearing 10 assemble swash ...

Page 15: ... shaft as illustrated in Fig 11E 8 Assemble compression spring 7 to cam shaft and fix the parts on cam shaft with retaining ring S 7 as illustrated in Fig 11F 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 Flat washer 5 Stop ring E 5 15 Disassembling needle ...

Page 16: ...essor power supply cord etc can be replaced No 1R165 Ring spring setting tool B Needle bearing complete Gear housing Note in assembling Pay attention to the assembling position of needle bearing complete The fat portion of needle bearing complete has to be faced to the belly side of gear housing Fig 13 Belly side Needle bearing complete Flat portion of needle bearing complete Belly side Back side ...

Page 17: ...2 3 4 1 2 C1 C2 M1 Noise suppressor M2 1 2 C1 C2 M1 M2 Switch Switch Noise suppressor Power supply cord Power supply cord Brush holder Brush holder Brush holder Brush holder Connected to field ore Connected to field ore For some countries noise suppressor of two lead wire type is used or noise suppressor is not used For some countries noise suppressor of two lead wire type is used or noise suppres...

Page 18: ...lder and lead holder Fix brush holder s lead wire blue and field lead wire black with lead holder as per the illustration Pass brush holder s lead wire blue under the field lead wire black Do not slack brush holder s lead wire blue between brush holder and lead holder Fix field brush holder s lead wire blue and field lead wire black with lead holder as per the illustration Fix lead wires which are...

Page 19: ...ation Fix brush holder s lead wire red and blue with lead holder as per the illustration Pass brush holder s lead wire red under the same of blue Do not slack brush holder s lead wire red between brush holder and lead holder Fix brush holder s wire red 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 l...

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Makita HR2452, Technical Information

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