Hitachi G 12SA3 Technical Data And Service Manual
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Hitachi G 12SA3 Technical Data And Service Manual

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See also: Operation Manual & Safety Instructions
DISC GRINDER
LIST Nos. G 12SA3: E272
G 13SB3: E271
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
G 12SA3
G 13SB3
Dec. 2005
MODELS
G 12SA3
G 13SB3
Hitachi
Power Tools
TECHNICAL DATA
SERVICE MANUAL
AND
G

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Summary of Contents for Hitachi G 12SA3

  • Page 1 MODELS G 12SA3 G 13SB3 Hitachi Power Tools DISC GRINDER TECHNICAL DATA G 12SA3 SERVICE MANUAL G 13SB3 LIST Nos. G 12SA3: E272 Dec. 2005 G 13SB3: E271 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT...
  • Page 2 REMARK: Throughout this TECHNICAL 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: Competitors Symbols Utilized Company Name Model Name W10-125QUICK METABO GWS10-125C BOSCH...

  • Page 3: Table Of Contents

    8-3. Lubrication Points and Types of Lubricant ..................11 8-4. Tightening Torque ........................... 11 8-5. Wiring Diagrams ..........................12 8-6. Insulation Tests ..........................13 8-7. No-load Current Value ........................13 9. STANDARD REPAIR TIME (UNIT) SCHEDULES ................ 14 Assembly Diagarm for G 12SA3 Assembly Diagarm for G 13SB3...

  • Page 4: Product Name

    The new Models G 12SA3 and G 13SB3 are the upgraded versions of the current Models G 12SA2 and G 13SB2, featuring high power input (1300 W) to compete with the competitors. In addition, the appearance adopted the aggressive design which attached great importance to operability.

  • Page 5: Class-Top Overload Durability

    4-1. Class-top Overload Durability The Models G 12SA3 and G 13SB3 provide class-top overload durability thanks to an improved cooling mechanism and a high-power motor. Practical test data: Comparison of torque when the stator coil temperature rise is 200û K...

  • Page 6: Specifications

    5. SPECIFICATIONS Model G 12SA3 G 13SB3 Item O.D. 115 mm (4-1/2") O.D. 125 mm (5") Dimensions x Thickness 6 mm (1/4") x Thickness 6 mm (1/4") x I.D. 22.2 mm (7/8") x I.D. 22.2 mm (7/8") Depressed- Max. practical...

  • Page 7: Comparisons With Similar Products

    6. COMPARISONS WITH SIMILAR PRODUCTS 6-1. Specification Comparisons HITACHI Maker G 12SA3 G 12SA2 Model name G 13SB3 G 13SB2 115/125 115/125 Capacity: (4-1/2"/5") (4-1/2"/5") Depressed-center wheel dia. (mm) (5") (5") 1,300 1,020 Power input *1 1,010 1,020 Power output *1...

  • Page 8: Comparisons In Torque Vs. Rotation Speed And Stator Coil Temperature Rise

    Figure 4 indicates: (1) The Models G 12SA3 and G 13SB3 keep higher rotation speed than the Models G 12SA2/G 13SB2, H and B in the heavy load range. This means that the working efficiency of the Models G 12SA3 and G 13SB3 is superior to the Models G 12SA2/G 13SB2, H and B.

  • Page 9: Precautions In Sales Promotion

    7. PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Models G 12SA3 and G 13SB3 Disc Grinders by all of our customers, it is very important that at the time of sale, the salesperson carefully ensures that the buyer seriously recognizes the importance of the contents of the Handling Instructions, and fully understands the meaning of the precautions listed on the Name Plate or Caution Plate attached to each tool.

  • Page 10: Precautions In Disassembly And Reassembly

    The [Bold] numbers in the descriptions below correspond to the numbers in the Parts List and the exploded assembly diagram for the Model G 12SA3, and the <Bold> numbers to those in the Parts List and the exploded assembly diagram for the Model G 13SB3.
  • Page 11 (2) Disassembly of the dust seal 1. Insert the hooks of the J-204 bearing puller between the commutator and the Dust Seal [16] <16> from both sides, and fix the hooks with the wing bolts. 2. Place the J-204 bearing puller on a supporting jig and push down on the armature shaft with a hand press to remove the Dust Seal [16] <16>...
  • Page 12 (5) Removal of the Slide Knob [36] <42> 1. Loosen the two Tapping Screws (W/Flange) D4 x 45 [51] <57> and remove the Tail Cover [53] <59>. 2. Hold the Housing [37] <43> and raise the Slide Bar [41] <47> until the Slide Knob [36] <42> moves to the "ON"...

  • Page 13: Reassembly

    8-2. Reassembly Put the parts together in the reverse order of disassembly, with the precautions given below. (1) Generously lubricate the teeth of the Gear [20] <20> and the Pinion [6] <6> with grease. Rub grease onto the teeth with your fingers so that the grease reaches each tooth bottom. Note that under-lubricated Gear [20] <20>...

  • Page 14: Lubrication Points And Types Of Lubricant

    Fig. 11 (6) When replacing the Gear Cover Ass'y [4] <4>, lubricate the needle bearing with mixed oil. Mixed oil: Mixture of Hitachi power tool grease No. 2 (Unilube No. 00) and turbine oil Mixture ratio ... 1:1 (weight ratio) Volume ...

  • Page 15: Wiring Diagrams

    8-5. Wiring Diagrams (1) For European countries, Australia and New Zealand (2) For the U.K. (110 V) (3) For the U.S.A. and Canada --- 12 ---...

  • Page 16: Insulation Tests

    8-6. Insulation Tests On completion of disassembly and repair, measure the insulation resistance, and conduct the dielectric strength test. Insulation resistance: 10 M Ω or more with DC 500 V megohm tester Dielectric strength test: AC 4,400 V/3 minutes, with no abnormalities ....220 V --- 240 V products AC 3,000 V/3 minutes, with no abnormalities ....

  • Page 17: Standard Repair Time (Unit) Schedules

    9. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable 60 min. MODEL Fixed Work Flow G 12SA3 G 13SB3 Wheel Guard Ass'y Housing Stator Slide Bar General Assembly Gear Cover Ass'y Pinion Seal Ring (A) Washer (C) Ball Bearing (629T12DD) Rubber Ring...
  • Page 18 Hitachi Power Tools LIST NO. E272 ELECTRIC TOOL PARTS LIST DISC GRINDER 2005 • • Model G 12SA3 (E1)
  • Page 19 PARTS G 12SA3 ITEM CODE NO. DESCRIPTION REMARKS USED 320-523 TAPPING SCREW D5X25 (BLACK) 325-053 GUARD PLATE 301-944 PUSHING BUTTON 321-737 GEAR COVER ASS’Y 1 INCLUD. 3, 19 949-558 NUT M8 (10 PCS.) 308-541 PINION 308-543 SEAL RING (A) 980-866...
  • Page 20 PARTS G 12SA3 ITEM CODE NO. REMARKS DESCRIPTION USED 980-063 TERMINAL 984-750 TAPPING SCREW (W/FLANGE) D4X16 937-631 CORD CLIP 953-327 CORD ARMOR D8.8 NAME PLATE 301-815 TAPPING SCREW (W/FLANGE) D4X45 325-058 HITACHI PLATE 325-052 TAIL COVER 500-234Z CORD 1 (CORD ARMOR D8.8)

  • Page 21: Standard Accessories

    STANDARD ACCESSORIES G 12SA3 ITEM CODE NO. DESCRIPTION REMARKS USED 938-332Z WRENCH 994-322 SIDE HANDLE 325-496 SIDE HANDLE (VIBRATION-ABSORBING) FOR EUROPE 325-515 CASE FOR EUROPE OPTIONAL ACCESSORIES ITEM CODE NO. DESCRIPTION REMARKS USED 937-825Z RUBBER PAD 938-317 RUBBER PAD FOR USA, CAN...
  • Page 22 Hitachi Power Tools LIST NO. E271 ELECTRIC TOOL PARTS LIST DISC GRINDER 2005 • • Model G 13SB3 (E1)
  • Page 23 PARTS G 13SB3 ITEM CODE NO. DESCRIPTION REMARKS USED 320-523 TAPPING SCREW D5X25 (BLACK) 325-053 GUARD PLATE 301-944 PUSHING BUTTON 321-737 GEAR COVER ASS’Y 1 INCLUD. 3, 19 949-558 NUT M8 (10 PCS.) 308-541 PINION 308-543 SEAL RING (A) 980-866 WASHER (C) 629-T12 BALL BEARING 629T12DDC3PS2-L...
  • Page 24 TAPPING SCREW (W/FLANGE) D4X16 937-631 CORD CLIP 953-327 CORD ARMOR D8.8 NAME PLATE 301-815 TAPPING SCREW (W/FLANGE) D4X45 325-057 HITACHI PLATE EXCEPT FOR FIN, DEN, SWE, NOR 325-052 TAIL COVER 500-234Z CORD (CORD ARMOR D8.8) 500-247Z CORD (CORD ARMOR D8.8) FOR FIN, DEN, SWE, NOR...
  • Page 25 STANDARD ACCESSORIES G 13SB3 ITEM CODE NO. DESCRIPTION REMARKS USED 938-332Z WRENCH 994-322 SIDE HANDLE 956-633 SIDE HANDLE FOR AUT, SUI, USA, CAN 325-496 SIDE HANDLE (VIBRATION-ABSORBING) FOR EUROPE 325-515 CASE OPTIONAL ACCESSORIES ITEM CODE NO. DESCRIPTION REMARKS USED 937-825Z RUBBER PAD 938-317 RUBBER PAD...

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