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Hitachi WH 9DMR Technical Data And Service Manual Download Page 20

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7-5. Number of Screws or Bolts Driven

Comparison data on the number of screws which can be tightened per battery charge are shown in the table

below.  Please note that the data below are intended for general reference only as the number of screws which

can be tightened per charge may vary depending on tightening conditions, screw sizes, ambient temperature,

characteristics of battery, etc.

(1) Screws (Cordless impact driver: Model WH 9DMR)

Battery

Tightening condition

Model

P

DW 9061

(Battery capacity: 1.7 Ah)

Wood screw
4.0 mm dia. and 50 mm length
Workpiece: Cedar, no prepared hole

260

690

Machine screw M8 x 16L

(2) Ordinary bolts (Cordless impact wrench: Model WR 9DMR)

Comparison data on the number of bolts which can be tightened per battery charge are shown in the table

below.  Please note that the data below are intended for general reference only as the number of bolts which

can be tightened per charge may vary depending on tightening conditions, bolt sizes, ambient temperature,

characteristics of battery, etc.

Battery

Tightening condition

Model

Coach bolt 9 x 90
Prepared hole
6.5 mm dia. and
90 mm depth

Number of bolts

Time (sec.)

HITACHI

WH 9DMR

EB 9B

(Battery capacity: 2.0 Ah)

260

690

HITACHI

WH 9DM2

EB 9B

(Battery capacity: 2.0 Ah)

233

753

HITACHI

WR 9DMR

EB 9B

(Battery capacity: 2.0 Ah)

27

15.4

HITACHI

WR 9DM2

EB 9B

(Battery capacity: 2.0 Ah)

29

13.4

Summary of Contents for WH 9DMR

Page 1: ...AL CORDLESS IMPACT DRIVER WH 9DMR CORDLESS IMPACT WRENCH WR 9DMR SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST Nos WH 9DMR G819 WR 9DMR G820 Mar 2005 W MODELS WH 9DMR WR 9DMR Hitachi Power Tools WH 9DMR WR 9DMR ...

Page 2: ... DATA AND SERVICE MANUAL a symbol s is are used in the place of company name s and model name s of our competitor s The symbol s utilized here is are as follows Symbol Utilized Competitor Company Name Model Name P DEWALT DW050 WH 9DMR ...

Page 3: ... 13 7 4 Tightening Speed 16 7 5 Number of Screws or Bolts Driven 17 8 PRECAUTIONS IN SALES PROMOTION 18 8 1 Safety Instructions 18 8 2 Tightening Torque Inspection Prior to Operation 20 8 3 Tightening Torque Variation 21 8 4 Suggestions and Precautions for the Efficient Use of the Charger 22 9 OTHER PRECAUTIONS 23 10 REPAIR GUIDE 24 10 1 Precautions in Disassembly and Reassembly 24 10 2 Precaution...

Page 4: ...ood and various other materials with use of optional accessory drill chuck adapter Applicable Markets Wood product assembly Tightening loosening of wood screws lag bolts etc Construction industry Assembly of scaffolding roofing aluminum sashes fencing etc removal of plastic cones from concrete forms mounting removal of form ties drilling into the wood frames of concrete forms etc Manufacturing ind...

Page 5: ...105 N m P 102 N m High durability dust resistance and long service life Common to the Model WH 12DM2 Advanced case Replaceable carbon brushes Common to the Model WH 12DM2 Convenient light equipped hook Common to the Model WH 12DM2 Protector is standard Common to the Model WH 12DM2 Common to the Model WH 12DM2 ...

Page 6: ...lightweight 1 4 kg High durability dust resistance and long service life Common to the Model WH 12DM2 Replaceable carbon brushes Common to the Model WH 12DM2 Convenient light equipped hook Common to the Model WH 12DM2 Protector is standard Common to the Model WH 12DM2 Advanced case Common to the Model WH 12DM2 ...

Page 7: ...0 0 WH 9DMR WH 9DM2 400 347 in lbs 800 694 in lbs 1200 1042 in lbs N m 120 1600 1389 in lbs 82 105 140 100 60 200 174 in lbs 1000 868 in lbs 600 521 in lbs 1400 1215 in lbs kgf cm 20 P Tightening torque 1 Fig 1 Tightening time comparison Tightening torque comparison Figure 2 shows the torque required for tightening an M12 high strength tension bolt in 3 seconds with a hexagon socket 40 mm long 33 ...

Page 8: ...value Weight Hitachi WR 9DMR 160 6 19 64 26 5 1 3 64 223 8 25 32 1 4 3 lbs 1 43 3 1 lbs 2 Compact The overall length of the Model WR 9DMR is equivalent to the current Model WR 9DM2 Cordless impact wrench Model WR 9DMR Hitachi WR 9DM2 160 6 19 64 26 5 1 3 64 223 8 25 32 1 4 3 lbs 1 43 3 1 lbs ...

Page 9: ... 6 1 Specifications Model Cordless impact driver WH 9DMR Capacity Item Cordless impact wrench WR 9DMR Small screw M4 M8 5 32 5 16 1 Ordinary bolt M5 M12 3 16 15 32 High strength bolt M5 M10 3 16 25 64 Ordinary bolt M6 M14 1 4 9 16 High strength bolt M6 M10 1 4 3 8 Tightening torque 105 N m 1070 kgf cm 930 in lbs 2 115 N m 1170 kgf cm 1020 in lbs 3 Tip condition 6 35 mm 1 4 Bit holder 9 5 mm 3 8 Sq...

Page 10: ...s with a hexagonal socket 3 This torque is based on tightening an M12 15 32 bolt strength grade 12 9 for 3 seconds with a hexagonal socket 4 Main body does not include accessory tools and hook hexagonal bit etc Charger Model UC 18YG Prior to charging During charging Charging completed Charging not possible High battery temperature Blinks Lit Blinks Flickers Lit 0 5 sec ON 0 5 sec OFF Stays ON cons...

Page 11: ... 2 9 16 12 5 16 Hexagon socket 996179 13 1 2 65 2 9 16 13 8 mm Hexagon socket 996180 14 9 16 65 2 9 16 14 10 mm Hexagon socket small type 996181 16 5 8 65 2 9 16 16 10 mm Hexagon socket 996182 17 21 32 65 2 9 16 17 10 mm Hexagon socket 996197 21 53 64 166 6 17 32 21 1 2 Hexagon long socket Woodworking drill bit Code No 959183 14 mm dia 35 64 83 mm 3 17 64 Drill chuck adaptor set Code No 996195 The...

Page 12: ...cessory long sockets Shape B Shape D 8 mm 10 mm 12 mm 13 mm 14 mm 16 mm 17 mm 18 mm 19 mm 48 1 7 8 48 1 7 8 48 1 7 8 48 1 7 8 48 1 7 8 48 1 7 8 48 1 7 8 48 1 7 8 48 1 7 8 60 2 3 8 60 2 3 8 60 2 3 8 60 2 3 8 60 2 3 8 60 2 3 8 60 2 3 8 60 2 3 8 60 2 3 8 B B B B B D D D D 8 5 16 10 3 8 12 15 32 13 1 2 14 9 16 16 5 8 17 21 32 18 23 32 19 3 4 W 5 16 W 3 8 W 7 16 M 5 3 16 M 6 1 4 M 8 5 16 M 10 3 8 M 10 ...

Page 13: ...Universal joint Code No 996147 12 7 mm 1 2 square adapter ass y Overall length 36 mm 1 13 32 Code No 996145 Square drive dimensions Anvil side 9 5 mm 3 8 Socket side 12 7 mm 1 2 Part name Overall length Code No Cross recessed Phillips hd driver bit No 2 45 955229 70 955654 45 955230 70 955655 Cross recessed Phillips hd driver bit No 3 ...

Page 14: ...g voltage V Plastic tool case Charger UC 14YFA or UC 18YG Standard accessories Charger 1 In the case of tapping screws and wood screws a minimum of M3 1 8 is possible 2 Max tightening torque is based on tightening an M12 5 32 bolt strength grade 12 9 for 3 seconds with a hexagon socket 3 Main body weight does not include accessory tools and hook hexagon bit etc 2 3 2 2 WH 9DM2 M 4 M 8 5 32 5 16 M ...

Page 15: ...nal voltage V Ambient temperature ûC UC 14YFA or UC 18YG Model UC 14YFA 56 UC 18YG 70 Power input capacity VA UC 14YFA 7 2 14 4 UC 18YG 7 2 18 Recharging voltage V Plastic tool case Charger UC 14YFA or UC 18YG Standard accessories Charger 1 Max tightening torque is based on tightening an M12 5 32 bolt strength grade 12 9 for 3 seconds with a hexagon socket 2 Main body weight does not include acces...

Page 16: ...olt M12 x 45 mm 15 32 x 1 3 4 strength grade 12 9 Steel plate Mild steel M12 15 32 Thickness 25 mm 1 Accessory tool Hexagon socket ass y 2 Impact wrench Test conditions Bolt M12 x 45 mm 15 32 x 1 3 4 strength grade 12 9 Steel plate Mild steel M12 15 32 Thickness 25 mm 1 Accessory tool Hexagon socket ass y WR 9DM2 200 174 in lbs 0 1 2 3 400 347 in lbs 600 521 in lbs 800 694 in lbs 1000 868 in lbs k...

Page 17: ...he thread mm2 Strength grade and rated axial stress of threads Strength grade Rated axial stress kgf mm2 Material Heat treatment 4 8 6 8 8 8 12 9 29 1 43 7 58 2 95 Mild steel Alloy steel including Ni Mn Cr etc None Processed hard material Diameter and effective sectional areas of threads Kind of thread x pitch Effective sectional area of thread mm2 M5 x 0 8 mm 3 16 14 2 M6 x 1 mm 1 4 20 1 M8 x 1 2...

Page 18: ...ghtening time sec Steel plate thickness t 3 8 10 mm 5 16 x 1 3 6 M8 x 30 Tightening torque High strength bolt 0 0 20 40 60 80 100 N m 0 1 2 3 kgf cm in lbs 3 8 x 1 3 16 M10 x 30 Tightening torque High strength bolt 0 0 20 40 60 80 100 N m Ordinary bolt 0 1 2 3 15 32 x 1 3 4 M12 x 45 High strength bolt Ordinary bolt kgf cm in lbs Tightening torque 0 0 20 40 60 80 100 N m 1200 1042 120 200 174 400 3...

Page 19: ...CHI WH 9DMR HITACHI WH 9DM2 P HITACHI WH 9DMR HITACHI WH 9DM2 P 7 4 Tightening Speed Tightening speed comparison is shown below The data below are intended for general reference only because actual tightening speed may vary depending on ambient temperature characteristics of battery etc 3 Wood screw 4 5 mm dia 90 mm length lauan 2 Wood screw 4 2 mm dia 75 mm length lauan 1 Wood screw 4 0 mm dia 50...

Page 20: ...d hole 260 690 Machine screw M8 x 16L 2 Ordinary bolts Cordless impact wrench Model WR 9DMR Comparison data on the number of bolts which can be tightened per battery charge are shown in the table below Please note that the data below are intended for general reference only as the number of bolts which can be tightened per charge may vary depending on tightening conditions bolt sizes ambient temper...

Page 21: ...der is reversed the charger may not function properly 4 Ensure the power source voltage is the same as that indicated on the Name Plate of the charger Use of any other power source DC outlet fuel powered generator etc will cause the charger to overheat and burn out 5 Do not use any voltage increasing equipment transformer etc between the power source and the charger If the charger is used with vol...

Page 22: ... turned into any Hitachi power tool sales outlet or authorized service center when they are no longer capable of being recharged or repaired If thrown into a fire the batteries may explode or if discarded indiscriminately leakage of the cadmium compound contained in the battery may cause environmental pollution B Caution Plates 1 The following precautions are listed on the Name Plate or Caution Pl...

Page 23: ...charging of batteries Indoor use only Replace defective cord immediately UC 14YFA For the U S A and Canada 8 2 Tightening Torque Inspection Prior to Operation As described and shown in Para 6 3 3 the output tightening torque of which the Models WH 9DMR and WR 9DMR are capable in excess of the rated tightening torque of certain bolts and screws Accordingly if the tightening time is prolonged for su...

Page 24: ... decreases rapidly just before the battery is fully discharged range a in the graph As this phenomenon is an inherent drawback in any cordless impact driver salespersons are requested to ensure that the customer is fully aware of and understands this characteristic Model WR 9DMR Fig 6 Number of bolts driven per charge EB 930H battery 2 Effects of low ambient temperatures The tightening torque requ...

Page 25: ...ing torque that can be achieved will be considerably decreased if the bolt and nut rotate together during the tightening operation The customer should be advised to carefully observe the operation and ensure this does not occur 8 4 Suggestions and Precautions for the Efficient Use of the Charger 1 Batteries may not be rechargeable immediately after use If the storage batteries are exposed to direc...

Page 26: ...rque but could also easily cause damage to the socket Please refer to the tables in Para 5 2 for appropriate socket dimensions 3 Hammering section lubrication Grease Molub Alloy 777 1 is utilized in the hammering section Frequent or continuous use of the tool will cause excessive temperature rise of the hammering section resulting in depletion of the grease and subsequent increased wear of compone...

Page 27: ...er by following the procedure shown in Figs 7 1 to 7 4 Be sure not to lose the two Steel Balls D 3 5 9 in Anvil F 10 Hold the body and adjust the gap of the retaining ring to the groove of anvil F then insert a small flat blade screwdriver into the groove at an angle Press down washer D with the small flat blade screwdriver Fig 7 2 Fig 7 1 1 2 Small flat blade screwdriver Anvil F 10 Retaining Ring...

Page 28: ...7 12 with a small flat blade screwdriver then release the hand press See Fig 8 Remove the hammer assembly from the J 297 base for washer S and support the end surface of Spindle D 18 13 With a hand press push down either of the raised faces of Hammer F 12 7 to compress Hammer Spring A 15 10 In this position extract the two Steel Balls D 5 556 11 6 from the cam grooves of Spindle D 18 13 and Hammer...

Page 29: ...from the FET to avoid malfunction of the switch Then Inner Cover A 25 20 Armature Ass y W Ball Bearing DC 9 6 V 26 21 Magnet E 28 23 Brush Block 30 25 and DC Speed Control Switch 37 32 can be removed in a piece Pushing Button A 38 33 can also be removed NOTE Be careful not to break the three legs coming from the FET to avoid malfunction of the switch 9 Removal of the switch assembly Remove the two...

Page 30: ... blade screwdriver Ring Gear C 21 16 is firmly inserted in Inner Cover A 25 20 Insert a small flat blade screwdriver between Ring Gear C 21 16 and Inner Cover A 25 20 to remove Ring Gear C 21 16 Remove the Damper 24 19 with a small flat blade screwdriver 21 16 22 17 23 18 24 19 25 20 Fig 11 Fig 10 Magnet E 28 23 Armature Ass y W Ball Bearing DC 9 6V 26 21 Dust Guard Fin B 29 24 Brush Block 30 25 A...

Page 31: ...n to the following items 1 Reassembly of the housing assembly a Be sure to follow the wiring diagram Fig 12 for proper wiring b When connecting the internal wires of the Brush Block 30 25 to the DC Speed Control Switch 37 32 fasten them with the Machine Screws W Sp Washer M3 x 5 36 31 paying attention to the direction of the flag terminal Fig 12 DC Speed Control Switch 37 32 Internal wire red Inte...

Page 32: ...hen mounting Dust Guard Fin B 29 24 to Magnet E 28 23 see Fig 14 Insert the two Dampers 24 19 so that they fit into Inner Cover A 25 20 Fit the locking rib of Ring Gear C 21 16 to the concave portion of Damper 24 19 Press fit the Armature Ass y W Ball Bearing DC 9 6V 26 21 into Inner Cover A 25 20 Adjust the convex portion of Dust Guard Fin B 29 24 to the concave portion of the Brush Block 30 25 s...

Page 33: ...hree internal wires from the FET are bent as shown in Fig 17 and passed above the DC Speed Control Switch 37 32 to keep from contact with Pushing Button A 38 33 see Fig 17 2 If there is no plating and a black oxide is formed on the terminal support where the battery contacts replace the terminal support with new one Code No 323710 Otherwise heat is generated due to contact failure and the battery ...

Page 34: ...t the two Steel Balls D 5 556 11 6 into the steel ball guide groove Check that the steel balls are properly inserted in the cam groove Then release the hand press d Mount the hammer assembly onto the J297 base for washer S With a hand press push down the top of Spindle D 18 13 to compress Hammer Spring A 15 10 On this condition mount the Stopper 17 12 onto the spindle shaft and then release the ha...

Page 35: ...unt the Hook Spring 48 43 and secure it with the Special Screw M5 49 44 Make sure to mount the Hook Spring 48 43 with its larger diameter side pointing inward the housing 8 Checking the direction of rotation Check whether the direction of rotation of Anvil F 10 or Anvil U 5 coincides with the directional markings on the push on side of Pushing Button A 38 33 When Pushing Button A 38 33 is turned t...

Page 36: ...ove of Hammer F 12 7 Cam groove and sliding section of Spindle D 18 13 5 mm diameter hole of the Idle Gear Set 2 pcs 19 14 All around the Needle Roller 20 15 Twenty eight Steel Balls D3 175 13 8 10 Screw tightening torque Tapping Screw W Sp Washer D4 x 25 Black 7 3 1 96 0 49 N m 20 5 kgf cm Tapping Screw W Flange D4 x 20 Black 33 28 1 96 0 49 N m 20 5 kgf cm Machine Screw W Washers M4 x 25 Black 4...

Page 37: ...iable WH 9DMR Work Flow Inner Cover A Armature Ass y Magnet E Brush Block Hook Ass y Hammer Case Anvil F Ring Gear C Housing A B Set General Assembly Hammer F Steel Ball Hammer Spring A Spindle D Idle Gear Set Needle Roller Ball Bearing 6901VV Guide Sleeve D DC Speed Control Switch ...

Page 38: ...9DMR Work Flow Inner Cover A Armature Magnet E Brush Block Hook Ass y Hammer Case Anvil U Ring Gear C Housing A B Set General Assembly Hammer F Steel Ball Hammer Spring A Spindle D Idle Gear Set Needle Roller Ball Bearing 6901VV DC Speed Control Switch ...

Page 39: ...NO G819 CORDLESS IMPACT DRIVER Model WH 9DMR 2005 4 1 E1 Hitachi Power Tools 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 36 43 44 45 46 47 48 49 50 501 502 502 39 40 41 42 ...

Page 40: ... 911 WASHER E 1 23 690 1VV BALL BEARING 6901VVCMPS2L 1 24 319 909 DAMPER 2 25 321 664 INNER COVER A 1 26 360 702 ARMATURE ASS Y W BALL BEARING DC 9 6V 1 27 322 719 SIDE YOKE 1 28 322 723 MAGNET E 1 29 322 720 DUST GUARD FIN B 1 30 321 662 BRUSH BLOCK 1 31 999 054 CARBON BRUSH 5X6X11 5 1 PAIR 2 32 319 918 BRUSH CAP 2 33 302 086 TAPPING SCREW W FLANGE D4X20 BLACK 7 34 NAME PLATE 1 35 324 287 HOUSING...

Page 41: ...O DESCRIPTION REMARKS NO USED PARTS 4 05 WH 9DMR 50 310 451 BATTERY EB 9B W ENGLISH N P 2 FOR USA CAN 50 324 288 BATTERY EB 9B W ENGLISH N P 2 FOR TPE 50 323 225 BATTERY EB 926H W ENGLISH N P 2 50 318 368 BATTERY EB 930H W ENGLISH N P 2 ...

Page 42: ...92 672 DRIVER BIT B NO 3 50L 1 603 996 177 NON MAGNETIC HEX SOCKET 8MM 65L 1 604 985 329 NON MAGNETIC HEX SOCKET 10MM 65L 1 605 996 178 NON MAGNETIC HEX SOCKET 12MM 65L 1 606 996 179 NON MAGNETIC HEX SOCKET 13MM 65L 1 607 996 180 NON MAGNETIC HEX SOCKET 14MM 65L 1 608 996 181 NON MAGNETIC HEX SOCKET 16MM 65L 1 609 996 182 NON MAGNETIC HEX SOCKET 17MM 65L 1 610 996 197 HEX SOCKET LONG 21MMX166L 1 6...

Page 43: ...T LIST NO G820 CORDLESS IMPACT WRENCH Model WR 9DMR 2005 4 1 E1 Hitachi Power Tools 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 31 38 39 40 41 42 43 44 45 501 502 502 34 35 36 37 ...

Page 44: ...723 MAGNET E 1 24 322 720 DUST GUARD FIN B 1 25 321 662 BRUSH BLOCK 1 26 999 054 CARBON BRUSH 5X6X11 5 1 PAIR 2 27 319 918 BRUSH CAP 2 28 302 086 TAPPING SCREW W FLANGE D4X20 BLACK 7 29 NAME PLATE 1 30 324 287 HOUSING A B SET 1 31 994 532 MACHINE SCREW W SP WASHER M3X5 2 32 319 906 DC SPEED CONTROL SWITCH 1 33 321 661 PUSHING BUTTON A 1 34 324 285 HITACHI PLATE 1 35 CAUTION PLATE A 1 FOR USA CAN 3...

Page 45: ... 607 608 612 996 132 HEX SOCKET ASS Y 18MMX33L 1 INCLUD 607 608 613 996 133 HEX SOCKET ASS Y 19MMX33L 1 INCLUD 607 608 614 996 134 HEX SOCKET ASS Y LONG 8MMX60L 1 INCLUD 602 603 615 996 135 HEX SOCKET ASS Y LONG 10MMX60L 1 INCLUD 602 603 616 996 136 HEX SOCKET ASS Y LONG 12MMX60L 1 INCLUD 602 603 617 996 137 HEX SOCKET ASS Y LONG 13MMX60L 1 INCLUD 607 608 618 996 138 HEX SOCKET ASS Y LONG 14MMX60L...

Page 46: ... 4 ITEM NO CODE NO DESCRIPTION REMARKS NO USED 4 05 WR 9DMR Printed in Japan 050401N ...

Page 47: ......

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