SP 18VA - Tool Parts Direct
Contents
1. SP 18VA HITACHI POWER TOOLS TECHNICAL DATA ELECTRONIC SANDER POLISHER TM SP 18VA LIST No 0352 Jun 2002 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT REMARK Throughout this TECHNICAL DATA AND SERVICE MANUAL a svmbol s is are used in the place of companv name s and model name s of our competitor s The svmbol s utilized here is are as follows Competitor Symbol Utilized Company Name Model Name MAKITA 9227C 9227CB 1 PRODUCT 1 2 MARKETING OBJECTIVE iii a a a ail 1 3 APPLICATIONS i i an nt aa inta wa d 1 4 SELLING POINTS m 1 4 1 Selling Point Descriptions nenea nana Anna nanna ana 2 5 SPECIFICATIONS I ii 3 6 COMPARISONS WITH SIMILAR PRODUCTS 4 6 1 Specification Comparisons i 4 6 2 Practical Test Data s pb eto a B eodd ter dh ie eod era xri a ada ies 5 7 PRECAUTIONS IN SALES PROMOTION rnnt nsn nnns nn nnn 6 4 1 Handling Instru ctiorisS 5 ice n eet aaa d 6 7 2 Caution on Name Plate ii 6 1 3 PRECAUTIONS on USsage e oor ERR a li i a a 6 8 FUNCTION AND OPERATION OF THE CONTROL CIRCUIT 7 8 1 Control Circuit Blo2. Housing Glassfiber reinforced polyamide resin green Handle Glassfiber reinforced polyamide resin black Enclosure Gear cover Packing gland 7 Aluminum allov die casting Coating Gear cover Packing gland 7 Metallic silver Net 2 8 kg 6 2 Ibs Weight Gross 5 5 kg 12 2 Ibs Packaging Corrugated cardboard box Rubber pad diae eem sud PRAIA E iasa NRE RENO SOLIANA Standard accessories Loop eene Wrench pe Urat e eor Ne ence Dae NA Weight excludes cord loop handle rubber pad and washer nut e Relationship between dial settings and rotation speeds of the Model SP 18VA 4 000 3 000 2 000 Rotation speed of spindle min 1 000 123485 6 Dial 6 COMPARISONS WITH SIMILAR PRODUCTS 6 1 Specification Comparisons Maker HITACHI Model SP 18VA SP 18V 2 Capacitv disc dia mm 180 7 180 7 180 7 Input W 1 250 1 100 1 200 Output W 680 407 555 Max output W 2 560 1 700 1 900 Rotation speed no load min 0 600 3 400 1 400 3 400 0 600 3 000 Variable speed control Dial and trigger switch Dial Dial and trigger switch Overload protection control None Equipped None No load sound pressure level dB A 84 86 83 Spindle lock Equipped Equipped Equipped Handle type Loop handle Side handle Loop handle Weight Catalog
3. 1 1 2 1 1 1 2 1 1 1 1 1 3 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 6 02 PARTS CODE NO 945 161 DESCRIPTION BRUSH CAP REMARKS SP 18VA 999 043 CARBON BRUSH 1 PAIR 958 900 BRUSH HOLDER 938 477 HEX SOCKET SET SCREW M5X8 320 939 320 938 HANDLE B HANDLE A 302 089 TAPPING SCREW W FLANGE D5X20 BLACK 302 086 TAPPING SCREW W FLANGE D4X20 BLACK 984 750 TAPPING SCREW W FLANGE D4X16 937 631 953 327 CORD CLIP CORD ARMOR D8 8 500 2342 CORD CORD ARMOR D8 8 500 4352 CORD CORD ARMOR D8 8 FOR HKG GBR 230V 500 4392 CORD ARMOR D8 8 FOR NZL AUS 500 3962 500 2472 CORD CORD ARMOR D8 8 FOR GBR 110V CORD ARMOR D8 8 FOR NOR SWE DEN FIN 500 4472 ARMOR 08 8 FOR SUI 500 241Z CORD ARMOR D8 8 FOR USA CAN x ALTERNATIVE PARTS STANDARD ACCESSORIES CODE NO 955 857 DESCRIPTION HEX BAR WRENCH 8MM REMARKS SP 18VA 937 9132 WRENCH 320 949 LOOP HANDLE 949 434 BOLT WASHER M10 10 PCS 949 844 949 103 HEX SOCKET HD BOLT M10X20 10 PCS WOOL BONNET 180MM EXCEPT FOR FRA SUI USA CAN 314 090 SANDING DISCS 180MM C P50 10 PCS EXCEPT FOR FRA SUI USA CAN OP
4. screws Three Seal Lock Screws W Sp Washer M4 x 10 1 which fix Bearing Cover 12 in place Three Seal Lock Screws W Sp Washer M4 x 10 23 which fix Bearing Cover A 24 in place Four Seal Lock Screws W Sp Washer M5 x 14 Black 31 which fix Packing Gland 30 in place 9 5 Tightening Torque D4 Tapping Screws W Flange 53 52 43 2 0 0 5 20 5 kgf cm 1 5 0 4 ft lbs D5 Tapping Screws W Flange 51 2 D5 Hex Hd Tapping Screw 15 MA Seal Lock Screw W Sp Washer 23 il 1 8 0 4 N m 18 4 kgf cm 1 3 0 3 ft lbs M5 Seal Lock Screw W Sp Washer 81 e 3 4 0 7 N m 35 7 kgf cm 2 5 0 5 ft lbs TRICIA STA S een SNR e mA DET 2 9 0 5 N 30 5 kgf cm 2 2 0 4 ft Ibs 9 6 Wiring Diagram White or blue White or blue Armature Ass v 13 Cord 56 Black or brown Stator Ass v 16 Controller Switch 42 11 9 7 Insulation Tests On completion of disassembly after repair measure the insulation resistance and conduct the dielectric strength test Insulation resistance 10 M more with 500V megohm tester Dielectric strength test AC 4 400 V for 1 minute with no abnormalities 220 V 240 V AC 3 000 V for 1 minute with no abnormalities 110V 120 V 9 8 Gear Backlash Value Gear blacklash should be maintained at a value of 2 mm or less measured at the outer edge of a fresh depres
5. 576U ARMATURE ASS V 110V 120V INCLUD 9 11 34 38 360 576E ARMATURE 220V 240V 315 046 961 501 FAN GUIDE HEX HD TAPPING SCREW D5X60 340 526C STATOR ASS V 110V INCLUD 17 340 526D STATOR ASS V 120V INCLUD 17 340 526E STATOR ASS V 220V 240V INCLUD 17 930 703 315 049 BRUSH TERMINAL FELT WASHER 320 218 O RING 315 050 LOCK PIN 871 397 NEEDLE BEARING NTN HK1210 320 937 987 201 GEAR SEAL LOCK SCREW W SP WASHER M4X10 937 077 BEARING COVER A 620 2DD BALL BEARING 6202DDCMPS2L 940 533 FEATHER KEV 3X3X10 320 943 320 944 SPINDLE SPINDLE FOR USA CAN 315 062 FELT PACKING A 315 060 SEAL PACKING 315 061 PACKING GLAND 315 636 953 255 SEAL LOCK SCREW W SP WASHER M5X14 BLACK RUBBER PAD D16 HOLE 953 247Z RUBBER PAD D14 HOLE FOR USA CAN 953 2462 WASHER NUT 14 953 254P WASHER NUT 5 8 11UNC FOR USA CAN 315 047 320 945 DUST SEAL HOUSING ASS Y INCLUD 39 41 47 48 320 948 SETTING LABEL NAME PLATE 608 VVM BALL BEARING 608VVC2PS2L 995 662 318 721 RUBBER RING MAGNET 320 946 BEARING BUSHING 320 941 CONTROLLER SWITCH 320 940 CONTROLLER SWITCH FOR GBR 110V USA CAN 305 095 TAPPING SCREW W FLANGE D4X20 HITACHI LABEL ALTERNATIVE PARTS 4 1 1 1 1 1 1 1 1 1 1 1
6. Gear Cover Ass v 5 as a unit 2 When it is necessary to remove the Gear 22 from the Spindle 27 it is highly recommended that the special repair tools described below be utilized As illustrated in Fig 4 support the Push 9 Y angled surface of the Gear 22 with a J 278 gear puller J 278 Gear Puller special repair tool Code No 315635 Code No 315635 rest the J 278 Gear Puller on the J 130 Sleeve special repair tool Code No 970907 and push down on the tip of the Spindle 27 with a hand press to remove the Gear 22 J 130 sleeve Code No 970907 Fig 4 10 9 4 Reassembly Perform reassembly in the reverse order of disassembly while observing the given precautions and taking care of the following points 1 After disassembly thoroughly remove old grease from the inside of the Gear Cover Ass y 5 and insert 25 g of new grease Nippeco JF 375 Code No 930036 is recommended prior to reassembly When inserting grease apply it to the pinion gear teeth surfaces and to the needle bearing inside the gear cover 2 When replacing the ball bearing on the commutator side of the Armature Ass y 13 be very careful to ensure that the Dust Seal 34 is assembled in the proper direction The Dust Seal 34 plays an important role in dustproofing of the ball bearing and must be replaced with a new one if disassembled 3 Apply Three Bond TB 1406 Screw Locking Agent to the following
7. TIONAL ACCESSORIES CODE NO 314 084 DESCRIPTION SANDING DISCS 180MM C P16 10 PCS REMARKS 314 085 SANDING DISCS 180MM C P20 10 PCS 314 086 SANDING DISCS 180MM C P24 10 PCS 314 088 SANDING DISCS 180MM C P36 10 PCS 314 089 314 090 SANDING DISCS 180MM C P40 10 PCS SANDING DISCS 180MM C P50 10 PCS 314 091 SANDING DISCS 180MM C P60 10 PCS 314 093 SANDING DISCS 180MM C P100 10 PCS 949 103 WOOL BONNET 180MM FOR FRA SULUSA CAN 994 322 SIDE HANDLE ALTERNATIVE PARTS Printed in Japan 020620N Hitachi Koki Co Ltd
8. ck Diagram L nanna entrer nennen rennen 7 8 2 Function of Each Block iena 7 8 3 Motor Characteristics and Voltage Applied to the Motor nn 8 9 PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY 9 9 1 Disassembly of the Armature ASSY nenne 9 9 2 Disassembly of the Stator 5 i 10 9 3 Disassembly of the Gear LL anna senten en En AEA 10 S ESPURCIIIIMee 11 9 5 Tightening TOGUE 2 2 E 11 9 6 Wiring ia ia 11 9 Insulation Tests oio tro e a ti snes 12 9 8 Gear Backlash Value ii 12 9 9 iNo Load Current Value ea 12 10 STANDARD REPAIR TIME UNIT SCHEDULES 13 CONTENTS Assembiv Diagram for SP 18VA 1 PRODUCT Hitachi Electronic Sander Polisher Model SP 18VA 180 mm 7 2 MARKETING OBJECTIVE The Model SP 18VA has been developed to upgrade and replace the current Model SP 18V The main improvements are increased motor power weight reduction and improved operabilitv 3 APPLICATIONS o Sanding metallic surfaces o Preparatorv sanding and removing rust from metallic surfaces prior to painting and removing paint p
9. eing damaged and clamp it securely in a vise Remove the Retaining Ring for D8 Shaft 6 As illustrated in Fig the Ball Bearing 6200DDCMPS2L 9 can be removed from the Armature Ass y 13 by utilizing a J 204 Bearing Puller special repair tool Code No 970982 After the Ball Bearing has been removed Bearing Cover B 12 can be easily taken off Push v J 204 bearing puller Code No 970982 EIN NIS TEARS ZY Fig 3 9 2 Disassembiv of the Stator Ass v 1 After taking out the Armature Ass y 13 loosen the four Tapping Screws W Flange D5 x 20 Black 51 and the two Tapping Screws W Flange D4 x 20 Black 52 and remove Handle A 50 and Handle B 49 2 Disconnect the lead wires of the Stator Ass v 16 from the Controller Switch 42 3 Disconnect the Brush Terminal 17 from the Brush Holders 47 and take out the Bearing Bushing 41 4 Finally loosen the two Hex Hd Tapping Screws D5 x 60 15 and the Stator Ass v 16 be taken out of the Housing Ass v 35 If the Stator Ass v 16 cannot be easily taken out of the Housing Ass v 35 disassembiv can be facilitated bv heating the Housing Ass v to a temperature of approximatelv 60 C 140 F with an appropriate heating device 9 3 Disassembiv of the Gear 1 Loosen the four Seal Lock Screws W Sp Washer M5 x 14 Black 31 and remove the Packing Gland 30 together with the Spindle 27 and the Gear 22 from the
10. el SP 18VA proves to have the highest performance Table 1 Comparison of max output and product weight Maker Hitachi Item dini SP 18VA SP 18V Max output W 2 560 3 4 HP 1 700 2 3 HP 1 900 2 5 HP Actual product weight 2 kg 2 8 6 2 Ibs 3 0 6 6 Ibs 3 0 6 6 lbs Max output product weight W kg 914 0 55 567 0 35 HP lbs 633 0 38 HP Ibs Max output may vary depending on the market Actual product weight is a measured weight and excludes cord loop handle rubber pad and washer nut 2 Iron bearing bushing An iron bearing bushing is newly added to the housing The heat resistance of the bearing chamber on the commutator side is significantly improved in comparison with current models Current ball bearing chamber New ball bearing chamber of housing SP 18V of housing SP 18VA Rubber ring Ball bearing Bearing bushing iron Ball bearing chamber of housing Ball bearing chamber of housing Fig 2 5 SPECIFICATIONS Model SP 18VA Item Capacity disc dia 180 mm 7 Power source AC single phase 50 or 60 Hz Voltage V Current A Input W 110 12 0 Voltage current and input 120 11 0 220 6 0 1 250 230 5 7 240 5 5 Rotation speed no load 0 to 600 3 400 min Type of motor AC single phase commutator motor Type of switch Trigger switch Material
11. kg 2 8 6 2 lbs 3 0 6 6 Ibs 3 0 6 6 Ibs Actual kg 2 8 6 2 1 5 3 0 6 6 Ibs 3 0 6 6 Ibs H mm 126 3 7 36 128 3 1 4 134 3 5 12 Dimensions h mm 81 2 1 18 82 2 1 12 88 2 2 9 L mm 415 10 19 36 417 10 7 12 423 10 3 4 pad and washer nut Output may vary depending on the market Weight excludes cord loop handle rubber 6 2 Practical Test Data 1 Comparisons in torque vs rotation speed 4 SP 18VA maximum speed SP 18V maximum speed Rotation speed of spindle 1 min 2 Sanding performance comparisons Workpiece material SPCC mild steel Sanding disc used AP 50 Applied pressure 4 kg Speed Maximum speed 350 SP 18VA 300 250 200 150 Sanding dust produced g 100 50 5 10 15 gt Time min 7 PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Model SP 18V Electronic Sander Polisher bv all of our customers it is very important that at the time of sale the salesperson carefully ensures that the buyer seriousiv recognizes the importance of the contents of the Handling Instructions and fullv understands the meaning of the precautions listed on the Caution Plate attached to each tool 7 1 Handling Instructions Although everv effort is made in each step of design manufacture and inspection to provide protection agains
12. rcuit functions as follows to maintain a constant rotation speed Motor rotation speed decreases or increases frequency signal decreases or increases gt output voltage of the F V converter decreases or increases output voltage of the differential amplifier increases or decreases 6 Load current detecting circuit Detects the load current bv means of a low resistance resistor which is in series with the motor and the triac 7 Load current control circuit When the detected load is excessive overload this circuit sends a command control signal to reduce power to the motor 8 Phase control circuit Generates the trigger signals necessarv to turn the triac on and delivers them to the gate of the triac The conductive angle of the triac is determined the timing of the generated trigger signals When starting the tool Controlled bv the soft start circuit the phase control circuit generates trigger signals to gradually increase the conductive angle of the triac Constant speed operation When there are variations in the rotation speed the phase control circuit generates trigger signals to keep the rotation speed as close as possible to the present rotation speed determined by the standard voltage circuit In short when the load increases and causes the rotation speed to decrease the conductive angle of the triac is increases and the voltage applied to the motor is increased In this way the
13. rior to repainting o Finishing woodwork and making flush joints of wooden plates o Preparatorv sanding wooden surfaces prior to painting o Finishing and polishing painted metallic surfaces of motor vehicles rolling stocks elevators refrigerators sewing machines washing machines medical instruments and so on o Polishing lacquered surfaces on wooden products such as furniture o Polishing svnthetic resin and ebonite products 4 SELLING POINTS Loop handle Lightweight 2 8 kg 6 2 lbs Maker C s model 3 0 kg 6 6 Ibs Compact body 415 mm 10 19 36 Maker C s model 423 mm 10 3 4 High power motor max output 2 200 W 2 9 HP Maker C s model 1 900 W 2 5 HP Variable trigger switch Equipped with electronic control devices Constant speed control Soft start speed control B Variable speed control Iron bearing bushing improves heat resistance of the bearing chamber on the commutator side 4 1 Selling Point Descriptions 1 High power motor and light weight The Model SP 18VA is equipped with high power motor and is more powerful than the current Model SP 18V although it is compact and lightweight We could sav that the ratio of the motor s maximum output to the product s weight defines its performance Compared with a typical competitor s model in terms of this indicator the Mod
14. rotation speed is kept as close as possible to the standard rotation speed 8 3 Motor Characteristics and Voltage Applied to the Motor Phase control voltage waveform Rotation speed Rotation speed determined by the standard voltage circuit Soft start characteristics when starting the tool Conductive angle c Pu When electronic control not applied Rotation speed Voltage applied to the motor increases gradually 0 Switch ON As the load inceases the voltage applied to the motor increases 0 No load 9 PRECAUTIONS IN DISASSEMBLV AND REASSEMBLV The Bold numbers in the descriptions below correspond to the item numbers in the Parts List and exploded assembly diagram for the Model SP 18VA 9 1 Disassembiv of the Armature Ass v 1 Loosen the two Brush Caps 45 and take out the Carbon Brushes 46 2 Remove the four Tapping Screws W Flange D5 x 30 2 The Armature Ass v 13 can then be taken out simultaneously with the Gear Cover Ass v 5 Packing Gland 30 and related 3 Remove the four Seal Lock Screws W Sp Washer M5 x 14 Black 31 and remove the Packing Gland 30 and related parts 4 After removing the three Seal Lock Screws W Sp Washer M4 x 10 11 the Armature Ass v 13 can be extracted together with the Bearing Cover B 12 and related parts 5 Carefully wrap the Armature Ass v 13 with a soft clean rag to protect it from b
15. sed center wheel 9 9 No Load Current Value After no load operation for 30 minutes the no load current value should be as follows Voltage V 110 120 220 230 240 Current A max 6 8 6 8 3 9 3 9 3 9 12 10 STANDARD REPAIR TIME UNIT SCHEDULES MODEL Variabl ariable 10 20 30 40 50 60 min General Assembly Work Flow Handle B Needle Bearing Seal Packing Lock Pin bj Handle A Control Switch Cord Housing Ass v Stator Ass v Armature Ass v Gear Cover Ass y Ball Bearing 6200DD Ball Bearing 608VV Dust Seal Felt Packing B Ep Gear Ball Bearing 6202DD Spindle Felt Packing A Packing Gland 13 HITACHI LISTNO 0352 ELECTRIC TOOL PARTS LIST ELECTRONIC SANDER POLISHER 2002 6 20 Model SP 18VA E1 PARTS CODE NO 303 255 DESCRIPTION SEAL LOCK SCREW W SP WASHER M4X10 REMARKS SP 18VA 305 507 TAPPING SCREW W FLANGE D5X30 306 888 PUSHING BUTTON 306 889 SPRING 320 936 315 055 GEAR COVER ASS Y SEAL RING A INCLUD 3 4 18 21 315 054 WASHER A 939 540 RETAINING RING FOR D10 SHAFT 10 PCS 620 0DD BALL BEARING 6200DDCMPS2L 315 053 315 052 RUBBER RING FELT PACKING B 315 051 BEARING COVER B 360
16. t safetv hazards the dangers inherent in the use of anv electric tool cannot be completelv eliminated Accordingiv general precautions and suggestions for the use of electric power tools and specific precautions and suggestions for the use of the Electronic Sander Polisher 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 following basic safetv precautions in the use of the tool 1 For Australia New Zealand and China CAUTION Read thoroughiv HANDLING INSTRUCTIONS before use 2 For U S A and Canada WARNING e To reduce the risk of injury user must read and understand instruction manual AVERTISSEMENT eAfin de r duire le risque de blessures l utilisateur doit lire et bien comprendre le mode d emploi 3 For Switzerland U K Germany Belgium France Netherlands Austria Spain Italy Finland Denmark and Norway 7 3 Precautions on Usage Never press the pushing button while the spindle is rotating If the pushing button is pressed while the spindle is rotating the spindle will stop immediately In such a case there is a danger that the washer nut may be loosened so that the r
17. ubber pad and wool bonnet fly off unexpectedly to cause possible serious injury 8 FUNCTION AND OPERATION OF THE CONTROL CIRCUIT 8 1 Control Circuit Block Diagram Switch Motor Triac AC power source e aeae L CONTRE Soft start and constant speed control circuit Load current detecting circuit Load current control circuit 8 2 Function of Each Block 1 Rotation speed detector Generates a frequency signal proportionate to the actual rotation speed of the motor A magnetic sensor in the controller monitors changes in the magnetic flux from a magnet and generates a frequency signal 2 F V converter Converts the frequency signal produced by the rotation speed detector into DC voltage 8 Standard voltage circuit Generates a standard voltage which determines the no load rotation speed of the motor and serves as a reference in maintaining constant rotation speed even when there are fluctuations in the load 4 Ramp generator Generates the voltage which determines the acceleration of the motor The soft start function when the motor is turned on is achieved through a gradual increase of the voltage generated by this circuit When fully charged the voltage of the ramp generator becomes equal to the standard voltage above 5 Differential amplifier Compares the voltage from the ramp generator voltages received from the F V converter which is proportionate to the actual motor rotation speed and amplifies the result This ci
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