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6-3. Chiseling Performance Comparison

Chiseling performance varies considerably depending on the work conditions. Use the factory test results shown

in Fig. 2 for comparison purposes only.

Fig. 2

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Содержание DH 24 PF

Страница 1: ...TECHNICAL DATA AND SERVICE MANUAL ROTARY HAMMER DH 24PF SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST No E478 May 2004 D MODEL DH 24PF Hitachi Power Tools ...

Страница 2: ... DATA AND SERVICE MANUAL symbols are used in the place of company names and model names of our competitors The symbols utilized here are as follows Symbols Utilized Competitors Company Name Model Name MAKITA HR2455 C BOSCH 11224VSR B ...

Страница 3: ...IONS IN SALES PROMOTION 13 7 1 Handling Instructions 13 7 2 Caution Plate 13 8 REFERENCE MATERIAL 14 8 1 Lubrication 14 8 2 Tool Structure 14 8 3 Three Mode Changeover Mechanism 18 8 4 Drill Bits 21 8 5 Chuck Section 22 8 6 Dust Collector B 22 9 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY 24 9 1 Disassembly 24 9 2 Reassembly 28 9 3 Tightening Torque 30 9 4 Wiring Diagram 31 9 5 Internal Wire Arrange...

Страница 4: ... slip double layer molded handle 5 New and powerful design 3 APPLICATIONS 1 Rotation and hammering function Drilling anchor holes Drilling holes in concrete tile brick and similar materials 2 Rotation only function Drilling holes in steel and wood with chuck adapter Tightening and loosening machine screws and wood screws with chuck adapter 3 Hammering only function Light duty chiselling of concret...

Страница 5: ...LLING POINTS Push button type forward reverse changeover switch Non slip double layer molded handle Class top drilling speed Improved resistance to grease leakage New and powerful design One push tool retainer ...

Страница 6: ... to grease leakage The Model DH 24PF is equipped with a sealed type ball bearing at the tip of the bearing unit while the current Model DH 24PE S is equipped with an open type ball bearing In addition the clearance around the bearing is minimized to improve the resistance to grease leakage 5 One push tool retainer The tool retainer of the current Model DH 24PE S needs sliding the grip to mount the...

Страница 7: ...rent and input Enclosure Full load blow 0 to 4 600 min Housing Handle cover Gear cover AC single phase commutator motor Type of motor Model DH 24PF 13 mm 1 2 32 mm 1 1 4 Voltage V 120 Rotation speed Forward 0 to 1 150 min Reverse 0 to 640 min Type of switch Variable speed control switch and reversing switch D type handle of main body and side handle Type of handle Glassfiber reinforced polyamide r...

Страница 8: ...m Code No 306369 306368 306370 Code No Adapter for slender shaft Drill bit slender shaft 1 Drill bit taper shank 2 Taper shank adapter SDS plus shank Drill bit taper shank 21 5 27 32 944464 Morse taper No 2 303618 3 Cotter Straight shank bit for impact drills 13 mm 1 2 hammer drill chuck SDS plus shank 13 mm hammer drill chuck For drilling operations when using a straight shank bit for impact dril...

Страница 9: ...nchor setting adapter A W 1 2 Anchor setting adapter A W 5 8 Anchor setting adapter A Code No 971794 971795 971796 971797 971798 Part name W 1 4 Anchor setting adapter B W 5 16 Anchor setting adapter B W 3 8 Anchor setting adapter B W 1 2 Anchor setting adapter B W 5 8 Anchor setting adapter B Internal cone type External cone type Code No 971799 971800 971801 971802 971803 C Large hole boring rota...

Страница 10: ...re bit shank B Core bit outer diameter 45 50 mm 1 25 32 2 Overall length 300 mm 11 52 64 Code No 303627 D 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 12 7 mm 1 2 Chemical anchor adapter 19 mm 3 4 Chemical anchor adapter Code No 3...

Страница 11: ...h the special screw a left hand threaded M6 screw when mounting the drill chuck onto chuck adapter G Chuck wrench Part name Chuck adapter G for SDS plus shank system 13 mm 1 2 Drill chuck 13VLRB D with chuck wrench Special screw M6 left hand threaded Code No a b c 0 8 1 1 Cross recessed head Phillips bit Overall length 70 mm For use with cross recessed head Phillips screw 2 Slotted head minus bit ...

Страница 12: ...sed for reverse rotation If reverse rotation is to be used for loosening screws use the plus bit bit No 2 described below by attaching it directly to chuck adapter D Screw size Chuck adapter D SDS plus shank Chuck wrench Bit No Chuck adapter D SDS plus shank Code No 971787 Code No 306885 K Grease for electric impact drill Containing 500 g 17 64 oz Code No 980927 Containing 30 g 1 06 oz Code No 981...

Страница 13: ...2 23 32 92 Function Forward reverse changeover switch Tool retainer Double layer molded handle Push button type 121 dB VL Full load vibration level Full load noise level dB A 3 modes Changeover modes One push type 3 modes 3 modes HITACHI DH 24PE S 24 15 16 620 0 1 350 0 4 400 2 5 5 5 lbs 13 1 2 407 16 1 16 141 5 9 16 32 1 1 4 72 2 27 32 90 Push button type 120 Slide type B 22 7 8 750 0 1 100 0 4 4...

Страница 14: ...ly depending on the work conditions Use the factory test results shown in Fig 1 for comparison purpose only Fig 1 Test conditions Direction Downward drilling Pushing force 98 N 10 kgf Test material Concrete panel with a compression strength of 2 352 N cm2 240 kgf cm2 ...

Страница 15: ... 12 6 3 Chiseling Performance Comparison Chiseling performance varies considerably depending on the work conditions Use the factory test results shown in Fig 2 for comparison purposes only Fig 2 ...

Страница 16: ...ards the dangers inherent in the use of any electric power tool cannot be completely eliminated Accordingly general precautions and suggestions for the use of electric power tools and specific precautions and suggestions for the use of the Rotary Hammer are listed in the Handling Instructions to enhance the safe efficient use of the tool by the customer Salespersons must be thoroughly familiar wit...

Страница 17: ...l rotary hammers the armature shaft in the Model DH 24PF is in parallel with the tool shaft the same structure that is employed in most impact drills This structure was adopted in order to make the Model DH 24PF more compact for easier handling and operation Thus the appearance of the Model DH 24PF is similar to that of an impact drill The rotation of the armature is transmitted to the second shaf...

Страница 18: ...in parallel with the cylinder axis Referring to Fig 3 the armature s rotation is transmitted to the second shaft via the first gear The second shaft s rotation is then transmitted through a spline to the clutch which engages with a reciprocating bearing and causes it to rotate However as illustrated circular grooves on the inner race of the reciprocating bearing are positioned on an angle of incli...

Страница 19: ...ism in the Model DH 24PF is different from that of conventional rotary hammers When the drill bit is lifted from the work surface on completion of drilling the second hammer moves to the position indicated by the continuous lines in Fig 4 and the protruding lip portion at the tip of the striker is gripped by O ring C mounted between the hammer holder and the damper holder In this state should the ...

Страница 20: ...the tool by the operator Sealed and dustproof construction The gear cover is totally enclosed by oil seals O rings and other devices to prevent leakage of lubricating grease and to keep dust and dirt out of the internal mechanisms The drill bit chuck portion is protected by a rubber front cap to keep out dust and chips which could cause improper fitting of the drill bit and or other faulty operati...

Страница 21: ... second shaft Claws on the end surface of the clutch engage with matching claws of the reciprocating bearing A portion in the figure to convert the rotation into reciprocating motion Three claws on the tip of the second shaft engage with matching three claws of the pinion sleeve all the time and the second shaft rotation is transmitted to the pinion sleeve Then claws on the large dia portion of pi...

Страница 22: ...hange lever Claws of reciprocating bearing Reciprocating bearing Lock plate Front end 3 Hammering only Fig 7 Adjust the change lever to hammering only mark The second pinion is moved to the motor side by the pin of the change lever Engagement between the pinion sleeve and the second pinion is released and no rotation is transmitted B portion in the figure The lock plate is moved to the motor side ...

Страница 23: ... for positioning a tool such as a flat chisel Adjust the change lever to a position halfway between hammering only mark and rotation and hammering marks Engagement between the pinion sleeve and the second pinion B portion in the figure and between the lock plate and the locking claw of the second pinion C portion in the figure is released and the cylinder rotates freely Simply turn the grip to adj...

Страница 24: ...from coming off Key slot two pieces Key rail 2 pcs Shape of SDS plus shank bit Ball holder Steel ball Section A A Cylinder Fig 9 The service life of a drill bit with a diameter of 8 mm is approximately 300 holes when drilling into concrete to a depth of 30 mm If reground before the end of its service life the drill bit will continue to provide efficient drilling Figure 10 shows the regrinding angl...

Страница 25: ...te surface inertia may cause dust collector B to become disconnected from the grip Accordingly caution the customer to press dust collector B and drill bit firmly against the concrete surface before turning on the switch to start drilling When dust collector B is used almost no dust and chips are scattered about However since the chips and dust remaining in the collector may scatter after completi...

Страница 26: ... 23 Washer Steel Ball D6 35 Fig 12 Dust collector B surface ...

Страница 27: ...p Type 72 Remove Springs B 16 from the rails in the Gear Cover 10 as shown in Fig 13 Pull out the Second Pinion 46 Clutch Spring 47 Clutch 48 and Lock Plate 45 these parts are sandwiched by means of the Lock Plate 45 as a unit as shown in Fig 14 from the end of the Second Shaft 49 Turn the Reciprocating Bearing 50 so that the Piston 39 is moved to its maximum upper position Inner Cover 41 side The...

Страница 28: ...bly of the tool retainer Slide the Grip 3 fully in the arrow direction as shown in Fig 16 and remove the Front Cap 1 Pulling the Grip 3 as shown in Fig 17 remove the Stopper Ring 2 with a retaining ring puller Then the Grip 3 Ball Holder 4 Steel Ball D7 0 23 Holder Plate 5 Holder Spring 6 and Washer B 7 can be removed from the Cylinder 24 Front Cap 1 Stopper Ring 2 Ball Holder 4 Holder Plate 5 Hol...

Страница 29: ...the Cylinder 24 with a retaining ring puller Then the Second Gear 25 Spring A 26 and Washer A 27 can be removed from the Cylinder 24 5 Removal of the cylinder and the second hammer Remove the Stopper Ring 36 from the inside diameter portion of the Cylinder 24 Then the Second Hammer 29 O ring 1AP 20 30 Hammer Holder 31 O ring B 32 Damper A 33 O ring C 34 and Damper Holder 35 can be removed from the...

Страница 30: ... No 319265 and fix the pinion sleeve puller to a vise Pull the Gear Cover 10 to remove the Pinion Sleeve 44 from the Gear Cover 10 Figs 19 and 20 Claws of pinion sleeve puller Pinion sleeve puller J 302 Hold with a vise Pinion sleeve puller J 302 Fig 19 Pinion Sleeve 44 Gear Cover 10 Pinion Sleeve 44 Adjuster Fig 20 ...

Страница 31: ...nner cover groove Apply Molub Alloy No 777 1 grease to the pin portion of the Change Lever 14 Apply Hitachi Motor Grease No 29 to the O ring S 18 15 for the Steel Ball D7 0 23 and the Change Lever 14 2 Reassembly of the change lever Press the Pushing Button 12 deeply into the hole of the Change Lever 14 Adjust the Change Lever 14 to the position shown in Fig 21 of the Gear Cover 10 and press it ha...

Страница 32: ...ined in the rail inside of the Gear Cover 10 When the Second Shaft 49 contacts the Pinion Sleeve 44 inside the Gear Cover 10 move the Change Lever 14 to the rotation and hammering mode and rotate the Grip 3 Then the Second Shaft 49 and the Pinion Sleeve 44 are engaged and the end surface of the Gear Cover 10 contacts that of the Housing 64 At this time rotate the Grip 3 to check that the rotation ...

Страница 33: ... 30 9 3 Tightening Torque Tapping Screws D4 61 73 77 80 2 0 0 5 N m 20 5 kgf cm 17 4 4 3 in lbs Tapping Screws W Flange D5 X 35 9 2 9 0 5 N m 30 5 kgf cm 26 0 4 3 in lbs ...

Страница 34: ... Fig 24 Fig 25 Stator Stator 9 5 Internal Wire Arrangement and Wiring Work A Internal wire arrangement Forward reverse changeover switch Put the internal wires coming from the Stator 120V 62 under the Brush Holder 71 Brown CB Black Stator Red Stator White Stator Gray Stator Blue CB ...

Страница 35: ...nal 2 of the speed control switch as shown in Fig 27 and tighten the screw tightening torque 0 6 0 2 N m 6 2 kgf cm 5 2 1 7 in lbs Insert the lead wire gray coming from the stator into the terminal M1 and the lead wire red into the terminal M2 After the insertion pull each lead wire slightly to check the lead wires do not come off To disconnect the lead wires insert a small flat blade screwdriver ...

Страница 36: ... Ass y O ring P 22 Ball Bearing 608DD Ball Bearing 608VV Inner Cover Pinion Sleeve Lock Plate Second Pinion Clutch Spring Clutch Second Shaft Reciprocating Bearing First Gear Ball Bearing 626VV General Assembly Housing Stator Second Hammer O ring 1AP 20 Hammer Holder O ring B Damper A O ring C Damper Holder Cylinder Second Gear Spring A Front Cap Grip Ball Holder Holder Spring Steel Ball D7 0 Gear...

Страница 37: ...30 E1 Hitachi Power Tools 1 10 12 23 24 25 26 27 28 29 30 31 32 33 34 36 37 38 39 40 44 54 55 56 58 57 59 60 61 62 58 63 64 69 68 65 47 48 49 50 51 52 53 46 45 41 42 43 13 11 14 15 2 3 4 5 6 7 8 9 66 79 81 78 70 77 76 80 67 73 75 74 17 18 20 21 22 16 19 35 72 71 501 502 503 ...

Страница 38: ...904DDPS2L 1 21 322 819 SLEEVE A 1 22 322 813 RETAINING RING 37MM 1 23 959 156 STEEL BALL D7 0 10 PCS 1 24 323 184 CYLINDER 1 25 323 185 SECOND GEAR 1 26 317 233 SPRING A 1 27 317 234 WASHER A 1 28 317 235 RETAINING RING D30 1 29 322 803 SECOND HAMMER 1 30 944 486 O RING 1AP 20 1 31 322 804 HAMMER HOLDER 1 32 322 802 O RING B 1 33 322 805 DAMPER A 1 34 322 808 O RING C 1 35 322 806 DAMPER HOLDER 1 ...

Страница 39: ...D4X55 2 62 340 585C STATOR 120V 1 63 608 VVM BALL BEARING 608VVC2PS2L 1 64 323 197 HOUSING 1 65 NAME PLATE 1 66 322 865 GRIP COVER 1 67 314 896 INTERNAL WIRE B 1 68 322 790 PUSHING BUTTON 1 69 HITACHI LABEL 1 70 981 373 TUBE D 2 71 955 203 BRUSH HOLDER 2 72 999 072 CARBON BRUSH AUTO STOP TYPE 1 PAIR 2 73 301 653 TAPPING SCREW W FLANGE D4X20 BLACK 3 74 323 198 HANDLE COVER 1 75 314 895 INTERNAL WIR...

Страница 40: ...32MM 1 INCLUD 619 619 982 686 GUIDE PLATE FOR CORE BIT 32MM 1 620 982 675 CORE BIT A 35MM 1 INCLUD 621 621 982 687 GUIDE PLATE FOR CORE BIT 35MM 1 622 982 676 CORE BIT A 38MM 1 INCLUD 623 623 982 688 GUIDE PLATE FOR CORE BIT 38MM 1 624 982 677 CORE BIT B 45MM 1 INCLUD 625 625 982 689 GUIDE PLATE FOR CORE BIT 45MM 1 626 982 678 CORE BIT B 50MM 1 INCLUD 627 627 982 690 GUIDE PLATE FOR CORE BIT 50MM ...

Страница 41: ... 1 655 303 622 ANCHOR SETTING ADAPTER B SDS W3 8X160L 1 656 302 977 ANCHOR SETTING ADAPTER B SDS W3 8X260L 1 657 303 332 HAMMER DRILL CHUCK SET 13MM 1 INCLUD 658 659 658 303 334 CHUCK HANDLE 1 659 303 335 RUBBER CAP 1 660 303 617 TAPER SHANK ADAPTER SDS PLUS NO 1 1 661 303 618 TAPER SHANK ADAPTER SDS PLUS NO 2 1 662 303 619 A TAPER SHANK ADAPTER SDS PLUS 1 663 303 620 B TAPER SHANK ADAPTER SDS PLU...

Страница 42: ... 6 ITEM NO CODE NO DESCRIPTION REMARKS NO USED 5 04 DH 24PF Printed in Japan 040530N ...

Страница 43: ......

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