Hitachi G 18SH2 Technical Data And Service Manual Download Page 1

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POWER TOOLS

TECHNICAL DATA

AND

SERVICE MANUAL

DISC GRINDER

G 18SH2, G 18U2

G 23SF2, G 23U2

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

LIST Nos. E244, E245, E246, E247

Sep. 2001

MODEL

G 18SH2, G 18U2
G 23SF2, G 23U2

Summary of Contents for G 18SH2

Page 1: ...ECHNICAL DATA AND SERVICE MANUAL DISC GRINDER G 18SH2 G 18U2 G 23SF2 G 23U2 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST Nos E244 E245 E246 E247 Sep 2001 G MODEL G 18SH2 G 18U2 G 23SF2 G 23U2 ...

Page 2: ...ol 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 Symbols Utilized Competitors Company Name Model Name MAKITA 9067 9069 9067SF 9069SF C BOSCH GWS20 180 GWS20 230 GWS20 180J GWS20 230J B ...

Page 3: ... SPECIFICATIONS 5 6 COMPARISONS WITH SIMILAR PRODUCTS 6 6 1 Specification Comparisons 6 6 2 Practical Test Data 7 7 PRECAUTIONS IN SALES PROMOTION 8 7 1 Handling Instructions 8 7 2 Caution on Name Plate 8 7 3 Precautions on Usage 8 8 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY 9 8 1 Disassembly 9 8 2 Reassembly 11 8 3 Lubrication Points and Types of Lubricant 13 8 4 Tightening Torque 13 8 5 Wiring D...

Page 4: ...ir development To compete with C s low price series and to correspond to the request of improvement the Models G 18SH2 G 18U2 G 23SF2 and G 23U2 have been developed to upgrade and replace the current Models G 18SH G 18U G 23SF and G 23U In addition the Models G 18U2 G 23U2 are with a soft start The key features of the Models G 18SH2 G 18U2 G 23SF2 and G 23U2 in comparison with the current models a...

Page 5: ...e superior to the competitors in overload durability Fig 1 100 50 0 B C G 18SH2 G 23SF2 G 18U2 G 23U2 G 18SH G 23SF G 18U G 23U 4 SELLING POINTS Power 2 000 W motor design Max power output 3 500 W Maker C s model 3 300 W Maker B s model 3 400 W Durable ball bearing retainer thanks to the iron bushing Dust proof ball bearing thanks to the labyrinth construction Wear resistance of armature coil 1 5 ...

Page 6: ...ervice life of the carbon brushes is equivalent to that of the competitors 100 50 0 B C G 18SH2 G 23SF2 G 18U2 G 23U2 G 18SH G 23SF G 18U G 23U Coating of heat resistant adhesive 4 3 Wear resistance of armature coil Both ends of the armature coil are sealed with heat resistant adhesive in addition to varnish treatment to minimize wear of the armature coil caused by dust a 100 50 0 G 18SH2 G 23SF2 ...

Page 7: ...o the iron bushing The Models G 18SH2 G 18U2 G 23SF2 and G 23U2 are equipped with the iron bushing in the ball bearing retainer at the commutator side of the housing to improve the durability of the ball bearing retainer 4 6 New construction to protect grease leakage 1 A rubber ring is added to the ball bearing section of the fan side to protect grease leakage 2 An O ring is added to the spindle l...

Page 8: ...e No 316824 1 2 Side handle Code No 340304 1 Wrench Code No 937913Z 1 Voltage and power input 8 500 min 6 600 min AC single phase commutator motor Housing Green Handle Black Gear cover packing gland Aluminum alloy diecasting Polyamide resin with glassfiber Depressed center wheel 230 mm 9 Code No 316825 1 2 Side handle Code No 340304 1 Wrench Code No 937913Z 1 Wheel nut B Code No 937917Z 1 2 1 Net ...

Page 9: ...Actual weight kg Dimensions L mm inch H mm inch G 18SH G 18U 180 7 2000 1220 3500 8500 86 120 4 3 9 48 lbs 4 5 9 92 lbs 463 18 7 32 83 3 9 32 180 7 2000 1110 3300 8500 92 160 4 2 9 26 lbs 4 4 9 70 lbs 454 17 28 32 92 3 20 32 C B G 23SF2 G 23U2 230 9 2000 1330 3500 6600 88 170 4 3 9 48 lbs 4 4 9 70 lbs 463 18 7 32 83 3 9 32 230 9 2000 1290 3400 6500 91 170 4 2 9 26 lbs 4 3 9 48 lbs 452 17 25 32 85 ...

Page 10: ...ture rise of the stator coil The temperature rise of the Models G 23SF2 and G 23SF is the lowest among the competitive models This means that the resistance to overload usage of the Models G 23SF2 and G 23SF is superior to other maker s models Fig 8 Load Stator coil temperature rise K 200 100 0 C G 23SF2 G 23SF B 300 400 X X X X Burn out point ...

Page 11: ...ions for the use of the disc grinders are listed in the Handling Instructions to enhance the safe and efficient use of the tool by the customer Salespersons must be thoroughly familiar with the contents of the Handling Instructions to be able to offer appropriate guidance to the customer during sales promotion 7 2 Caution on Name Plate Each tool is provided with a Name Plate which contains the fol...

Page 12: ...3 13 can then be taken out simultaneously with the Gear Cover Ass y 5 5 Packing Gland 26 26 and related parts 5 Remove the four Hex Socket Hd Bolts W Flange M5 x 16 27 27 6 After removing the two Seal Lock Screws W SP Washer M5 x 14 Black 1 1 the Armature 13 13 can be extracted together with the Bearing Cover A 12 12 and related parts 7 Carefully wrap the Armature 13 13 with a soft clean rag to pr...

Page 13: ...om the Housing Ass y 39 39 If the Stator 16 16 cannot be easily removed from the Housing Ass y 39 39 disassembly can be facilitated by heating the Housing Ass y 39 39 to a temperature of approximately 60 C 140 F with an appropriate heating device 4 Removal of the Gear 19 19 1 Loosen the four Hex Socket Hd Bolt W Flange M5 x 16 27 27 and remove the Packing Gland 26 26 together with the Spindle 24 2...

Page 14: ...nd TB 1406 Screw Locking Agent to the following screws Two Seal Lock Screws W SP Washer M5 x 14 Black 1 1 which fix Bearing Cover A 12 12 in place Four Hex Socket Hd Bolt W Flange M5 x 16 27 27 which fix Packing Gland 26 26 in place Armature Shaft Ball Bearing 6000VVCMPS2L 4 Check that the spring end does not hold the terminal when mounting the carbon brush Do not catch the terminal in the brush c...

Page 15: ...internal wires caught in parts Fig 13 a G 18SH2 G 23SF2 b G 18U2 G 23U2 Insert the terminal securely Pass the internal wire of the cord through this area Fit the internal wire in the groove securely Insert the terminal securely Fit the internal wire in the groove securely Pass the internal wire of the cord through this area Resistor ass y ...

Page 16: ...e EP LF O 35 g Generously rub grease onto the gear and pinion and inner circumference of metal 8 4 Tightening Torque Tapping Screws W Flange D4 x 16 42 42 46 46 45 45 52 53 2 0 0 5 N m 20 5 kgf cm 1 5 0 4 ft lbs Seal Lock Screws W SP Washer M5 x 14 1 1 2 9 0 5 N m 30 5 kgf cm 2 2 0 4 ft lbs Tapping Screw W Flange D5 x 35 2 2 3 4 0 7 N m 35 7 kgf cm 2 5 0 5 ft lbs Hex Socket Hd Bolt W Flange M5 x 1...

Page 17: ... and repair measure the insulation resistance and conduct the dielectric strength test Insulation resistance 7 M Ω or more with DC 500 V Megohm Tester Dielectric strength test AC 4 000 V 1 minute with no abnormalities 220 V 240 V products AC 2 500 V 1 minute with no abnormalities 110 V 127 V products 8 7 No load Current Value After no load operation for 30 minutes the no load current value should ...

Page 18: ...ing Ass y Stator Wheel Guard Ass y Handle B Gear Cover Ass y General Assembly G 18SH2 G 18U2 G 23SF2 G 23U2 Pinion Seal Washer Felt Packing Ball Bearing 6301DD Rubber Ring B Bearing Cover Armature Dust Seal Ball Bearing 6000VV Bearing Bushing Bearing Cover B Ball Bearing 6302DD Felt Packing B Packing Gland Spindle Seal Plate ...

Page 19: ...ST NO DISC GRINDER Model G 18SH2 2001 9 25 E1 E244 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 39 40 41 42 43 44 45 41 46 42 47 48 49 51 54 55 501 53 52 50 43 48 49 56 ...

Page 20: ...D BALL BEARING 6302DDCMPS2L 1 23 990 852 FELT PACKING B 1 24 320 234 SPINDLE 1 25 320 228 SEAL PLATE 1 26 320 227 PACKING GLAND 1 27 994 192 HEX SOCKET HD BOLT W FLANGE M5X16 4 28 306 887 BOLT M8X22 1 29 306 124 WHEEL GUARD ASS Y 1 INCLUD 28 30 937 907Z WHEEL WASHER A 1 31 316 824 D C WHEELS 180MM A24R 25 PCS 1 32 937 909Z WHEEL NUT M14X2 1 33 320 218 O RING 1 34 306 890 LOCK PIN 1 35 320 241 GEAR...

Page 21: ...IPTION REMARKS NO USED PARTS G 18SH2 9 01 51 960 266 CORD CLIP 1 52 984 750 TAPPING SCREW W FLANGE D4X16 2 53 320 230 HANDLE A 1 54 981 373 TUBE D 2 55 940 778 CORD ARMOR D10 7 1 56 500 214Z CORD 1 56 500 247Z CORD 1 FOR EUROPE NOR SWE DEN FIN ...

Page 22: ... 4 STANDARD ACCESSORIES OPTIONAL ACCESSORIES ITEM NO CODE NO DESCRIPTION REMARKS NO USED ITEM NO CODE NO DESCRIPTION REMARKS NO USED Printed in Japan 010925N 9 01 G 18SH2 501 937 913Z WRENCH 1 601 310 337 SUPER WASHER 1 ...

Page 23: ...T NO DISC GRINDER Model G 18U2 2001 9 25 E1 E245 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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 41 46 42 48 48 49 54 55 501 52 50 43 56 47 49 51 53 57 602 ...

Page 24: ...B 1 22 630 2DD BALL BEARING 6302DDCMPS2L 1 23 990 852 FELT PACKING B 1 24 320 234 SPINDLE 1 25 320 228 SEAL PLATE 1 26 320 227 PACKING GLAND 1 27 994 192 HEX SOCKET HD BOLT W FLANGE M5X16 4 28 306 887 BOLT M8X22 1 29 306 124 WHEEL GUARD ASS Y 1 INCLUD 28 30 937 907Z WHEEL WASHER A 1 32 937 909Z WHEEL NUT M14X2 1 33 320 218 O RING 1 34 306 890 LOCK PIN 1 35 320 241 GEAR ASS Y 1 INCLUD 7 19 36 320 2...

Page 25: ...O CODE NO DESCRIPTION REMARKS NO USED PARTS G 18U2 9 01 52 960 266 CORD CLIP 1 53 984 750 TAPPING SCREW W FLANGE D4X16 2 54 320 230 HANDLE A 1 55 981 373 TUBE D 2 56 940 778 CORD ARMOR D10 7 1 57 500 247Z CORD 1 CORD ARMOR D10 7 ...

Page 26: ...ES OPTIONAL ACCESSORIES ITEM NO CODE NO DESCRIPTION REMARKS NO USED ITEM NO CODE NO DESCRIPTION REMARKS NO USED Printed in Japan 010925N 9 01 G 18U2 501 937 913Z WRENCH 1 601 310 337 SUPER WASHER 1 602 316 824 D C WHEELS 180MM A24R 25 PCS 1 ...

Page 27: ... NO DISC GRINDER Model G 23SF2 2001 9 25 E1 E246 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 39 40 41 42 43 44 45 41 46 42 47 48 48 49 51 54 55 501 502 53 52 50 43 49 56 ...

Page 28: ...949 236 MACHINE SCREW M5X10 10 PCS 2 21 320 229 BEARING COVER B 1 22 630 2DD BALL BEARING 6302DDCMPS2L 1 23 990 852 FELT PACKING B 1 24 320 234 SPINDLE 1 25 320 228 SEAL PLATE 1 26 320 227 PACKING GLAND 1 27 994 192 HEX SOCKET HD BOLT W FLANGE M5X16 4 28 306 887 BOLT M8X22 1 29 306 120 WHEEL GUARD ASS Y 1 INCLUD 28 30 937 907Z WHEEL WASHER A 1 30 310 337 SUPER WASHER 1 FOR AUT 30 937 908Z WHEEL WA...

Page 29: ...CK 1 W LOCK FOR SYR SAF OMA FRG HOL BEL ESP AUT 51 960 266 CORD CLIP 1 52 984 750 TAPPING SCREW W FLANGE D4X16 2 53 320 230 HANDLE A 1 54 981 373 TUBE D 2 FOR CORD 55 940 778 CORD ARMOR D10 7 1 55 958 049 CORD ARMOR D8 2 1 56 500 247Z CORD 1 CORD ARMOR D10 7 56 500 245Z CORD 1 CORD ARMOR D10 7 FOR SYR 56 500 439Z CORD 1 CORD ARMOR D8 2 FOR AUS 56 500 450Z CORD 1 CORD ARMOR D10 7 FOR GBR 230V 56 50...

Page 30: ...SORIES OPTIONAL ACCESSORIES ITEM NO CODE NO DESCRIPTION REMARKS NO USED ITEM NO CODE NO DESCRIPTION REMARKS NO USED Printed in Japan 010925N 9 01 G 23SF2 501 937 913Z WRENCH 1 502 937 917Z WHEEL NUT B 1 FOR AUS 601 310 337 SUPER WASHER 1 ...

Page 31: ...NO DISC GRINDER Model G 23U2 2001 9 25 E1 E247 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 39 40 41 42 43 44 45 41 46 42 47 48 49 51 54 55 501 502 53 52 50 43 56 48 49 57 ...

Page 32: ... 22 630 2DD BALL BEARING 6302DDCMPS2L 1 23 990 852 FELT PACKING B 1 24 320 234 SPINDLE 1 25 320 228 SEAL PLATE 1 26 320 227 PACKING GLAND 1 27 994 192 HEX SOCKET HD BOLT W FLANGE M5X16 4 28 306 887 BOLT M8X22 1 29 306 120 WHEEL GUARD ASS Y 1 INCLUD 28 30 937 907Z WHEEL WASHER A 1 30 937 908Z WHEEL WASHER B 1 FOR AUS 31 316 825 D C WHEELS 230MM A24R 25 PCS 1 FOR AUS 32 937 909Z WHEEL NUT M14X2 1 33...

Page 33: ... 320 371 SWITCH 2P PILLAR TYPE W SAFETY LOCK 1 W O LOCK FOR AUS 52 960 266 CORD CLIP 1 53 984 750 TAPPING SCREW W FLANGE D4X16 2 54 320 230 HANDLE A 1 55 981 373 TUBE D 2 FOR CORD 56 940 778 CORD ARMOR D10 7 1 56 958 049 CORD ARMOR D8 2 1 57 500 247Z CORD 1 CORD ARMOR D10 7 57 500 248Z CORD 1 CORD ARMOR D10 7 FOR SUI 57 500 439Z CORD 1 CORD ARMOR D8 2 FOR AUS G 23U2 9 01 ...

Page 34: ...SORIES OPTIONAL ACCESSORIES ITEM NO CODE NO DESCRIPTION REMARKS NO USED ITEM NO CODE NO DESCRIPTION REMARKS NO USED Printed in Japan 010925N 9 01 G 23U2 501 937 913Z WRENCH 1 502 937 917Z WHEEL NUT B 1 FOR AUS 601 310 337 SUPER WASHER 1 ...

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