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MODEL
G 10SF3
POWER TOOLS
DISC GRINDER
TECHNICAL DATA
G
AND
G 10SF3
SERVICE MANUAL
LIST No. E243
Aug. 2001
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

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   Summary of Contents for Hitachi G 10SF3

  • Page 1

    MODEL G 10SF3 POWER TOOLS DISC GRINDER TECHNICAL DATA G 10SF3 SERVICE MANUAL LIST No. E243 Aug. 2001 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 MAKITA 9523NB...

  • Page 3: Table Of Contents

    8-3. Lubrication Points and Types of Lubricant ..................11 8-4. Tightening Torque ......................... 11 8-5. Wiring Diagram ..........................11 8-6. Insulation Tests ..........................12 8-7. No-load Current Value ......................... 12 9. STANDARD REPAIR TIME (UNIT) SCHEDULES ...............13 Assembly Diagram for G 10SF3...

  • Page 4: Product Name

    G 10SF3 is more powerful than the current Model G 10SF2 thanks to the improved cooling efficiency of the motor. The components of the Model G 10SF3 are the same as those of the Model G 10SF2 except the enclosure and the wiring components.

  • Page 5

    Smaller air vent is provided near the Two air vents are provided commutator. near the commutator. 13.5 G 10SF3 G 10SF2 (Comparison of wear resistance of armature coils when dust and fine gravel are sucked into the machines) G10SF3 G10SF2 --- 2 ---...

  • Page 6: Specifications

    5. SPECIFICATIONS Model G 10SF3 Item O.D. 100 mm (4") x Thickness 4 mm (5/32") Dimensions x I.D. 16 mm (5/8") Depressed Offset amount: 4 mm (5/32") center wheel Max. peripheral speed 4,300 m/min (14,100 ft/min, 72 m/s) Power source...

  • Page 7: Comparisons With Similar Products

    6. COMPARISONS WITH SIMILAR PRODUCTS 6-1. Specification Comparisons HITACHI Maker G 10SF3 G 10SF2 Model Wheel diameter No-load speed /min 12,000 12,000 11,000 Power input Power output Max. power output Dimensions Weight * (1.5) (1.5) (1.5) (Actual weight) Snap Snap...

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

    Figure 1 indicates the followings: The motor speed of the Model G 10SF3 is higher than that of C at the same torque. This means that the working efficiency of the Model G 10SF3 is superior to C (Model G 10SF2 is also superior to C).

  • Page 9: Precautions In Sales Promotion

    7. PRECAUTIONS IN SALES PROMOTION In the interest of promoting the safest and most efficient use of the Model G 10SF3 Disc Grinder 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 attached to each tool.

  • Page 10: Precautions In Disassembly And Reassembly

    8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY Procedures and precautions for disassembly and reassembly are described below. The [Bold] numbers in the descriptions below correspond to the item numbers in the Parts List and the exploded assembly diagram. 8-1. Disassembly (1) Disassembly of the armature Remove the Brush Caps [39], and take out the Carbon Brushes [40].

  • Page 11

    (4) Disassembly of the gear (Fig. 3) Loosen the Seal Lock Screw (W/Sp. Washer) M4 x 12 [23] fixing the Packing Gland [22], and remove the Packing Gland [22] from the Gear Cover Ass'y [3]. Support the button of the Packing Gland [22] with a jig, and push down on the upper portion of the Spindle M10 x P1.5 [25] with a hand press until the end surface of the Woodruff Key 2.5 x 8 [24] contacts the Ball Bearing 6001VVCMPS2L [20] and the Spindle M10 x P1.5 [25] cannot be pushed down any more.

  • Page 12: Reassembly

    8-2. Reassembly Push the parts together in the reverse order of disassembly, with the precautions given below. (1) Ensure that the terminals of the stator are not bent or otherwise damaged. (2) Generously lubricate the teeth of Gear [17] and Pinion [5] with grease. Rub grease onto the teeth with your fingers so that the grease reaches each tooth bottom.

  • Page 13

    Connect the terminal securely without folding. Brush Holder [41] Fit the Internal Wire 85L [13] between the housing ribs securely (4 pcs.). Fig. 7 Fit each internal wire between the ribs. Fit the internal wire of the Cord [51] between the ribs. Fig.

  • Page 14: Lubrication Points And Types Of Lubricant

    (8) When replacing the Gear Cover Ass'y [3], lubricate the metal part with mixed oil. Mixed oil: A mixture of Hitachi Power Tool Grease No. 2 (Unilube No. 00 Code No. 939302 is recommended) and turbine oil Mixture ratio ..1:1 (weight ratio) Quantity ...

  • Page 15: Insulation Tests

    8-6. Insulation Tests On completion of disassembly and repair, carefully measure the insulation resistance and conduct a dielectric strength test. Insulation resistance: 7 M Ω or more with 500 V DC Megohm Tester Dielectric strength test: AC 4,000 V/1 minute with no abnormalities 8-7.

  • Page 16: Standard Repair Time (unit) Schedules

    9. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable 60 min. MODEL Fixed Work Flow G 10SF3 Wheel Guard Ass'y Housing Stator General Assembly Pinion Ball Bearing 608VVC2PS2L Inner Cover Armature Dust Seal Pushing Button Bearing Cover Gear Cover Ass'y Ball Bearing...

  • Page 17

    E243 LIST NO. ELECTRIC TOOL PARTS LIST DISC GRINDER 2001 • • Model G 10SF3 (E1) 44 45...

  • Page 18

    PARTS G 10SF3 ITEM CODE NO. DESCRIPTION REMARKS USED 937-807 TAPPING SCREW D5X25 301-944 PUSHING BUTTON 303-078 GEAR COVER ASS’Y 1 INCLUD.2,16 301-941 SPECIAL NUT M7 301-939 PINION 301-936 SLOTTED HD. SCREW (SEAL LOCK) M4X10 608-VVM BALL BEARING 608VVC2PS2L 301-935...

  • Page 19

    G 10SF3 PARTS ITEM CODE NO. DESCRIPTION REMARKS USED 500-237Z CORD 1 FOR HKG 8-- 01 * ALTERNATIVE PARTS --- 3 -- -...

  • Page 20: Standard Accessories

    STANDARD ACCESSORIES G 10SF3 ITEM CODE NO. DESCRIPTION REMARKS USED 313-933 WRENCH --- 4 --- * ALTERNATIVE PARTS Printed in Japan 8 -- 01 (010810N)

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