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GA7010C-TE


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T    ECHNICAL INFORMATION
   Models No.
                            GA7010C, GA7011C
                            GA9010C
                                                                                                          PRODUCT
                                                                                                               P1/9


   Description              180mm (7") Angle Grinders
                                                                                                L
                            230mm (9") Angle Grinder

CONCEPT AND MAIN APPLICATIONS                                               H
  More comfortable operation will be provided by
  these new angle grinders with the following features.
  *800g (1.8 lbs) lighter than the current 9067/9069                   W
   series models in weight.
  *Yet still features the same high power as 9067/9069                              Dimensions: mm (")
   series models.                                                 Model No.      GA7010C GA7011C GA9010C
  *Electronic with soft start, current limiter and
   constant speed under load                                      Length ( L )            453 (17-7/8)
                                                                  Width ( W )        200 (7-7/8)       250 (9-7/8)
                                                                  Height ( H )             137 (5-3/8)

 Specification
                                                                   Continuous Rating (W)
     Voltage (V)           Current (A)       Cycle (Hz)                                         Max. Output(W)
                                                                  Input             Output
         110                  16               50 / 60            1,650               700              2,600
         120                  15               50 / 60            1,650               700              2,600
      a) 220                  8.6              50 / 60            1,800              1,000             3,000
      b) 230                  9.2              50 / 60            2,000             1,200              3,000
      c) 240                  7.9              50 / 60            1,800             1,000              3,000
       a) 220: China        b) 230: Europe and high voltage area of the Middle East countries
       c) 240: Australia

    Model No.                                     GA7010C                  GA7011C                  GA9010C
                          Diameter                 180 (7)                   180 (7)                 230 (9)
    Wheel size: mm (") Hole diameter                                       22.23 (7/8)
                          Thickness                                          6 (1/4)
    No load speed: min.-1 = rpm.                    8,400                    6,000                   6,000
                          Current limiter                                     Yes
    Electronic features Soft start                                            Yes
                          Constant speed                                      Yes
                          Australia                                         2.0 (6.5)
    Cord length: m (ft)
                          Others                                            2.5 (8.2)
    Net weight: kg (lbs)                                                    3.4 (7.5)


 Standard equipment
    *Lock nut wrench 35 ..................................... 1 pc.
   < Note > The standard equipment for the tool shown may differ from country to country.



 Optional    accessories
   *Dust cover attachment
   For GA7010C, GA7011C
   *Assorted accessories for 180mm (7") angle grinder
   For GA9010C
   *Assorted accessories for 230mm (9") angle grinder
                                                                                                                   P2/9

Features    and benefits


   Weighs Only 3.4kg (7.5lbs) to Reduce
   Operator Fatigue in Long Continuous Use.                                            Electronic with
 800g (1.8lbs) lighter than the current 9067/9069 series                1. Constant speed under load
 models, yet features the same high power as them                       2. Current limiter for protection against overload
 thanks to the new S71 motor and electronic features.                   3. Soft start for minimized startup reaction force



 Easy-to-Operate Large                        Rotatable Gear Housing                            Cooling Vents with
 Spindle Lock Button                                                                            Labyrinth Structure
                                              Can be positioned at every
                                              90 degrees to suit most cutting                   Seal out dust and debris
                                              and grinding operations.                          for long tool life.




                                                                                             Auto Cut-Out Brushes




                                                                                         Dust Cover Attachment
                                                                                         (optional accessory)
                                                                                       Can be installed with one-touch
                                                                                       action to seal out coarse dust
                                                                                       such as aluminum dust.
  O Rings for Protection from             Wheel Cover can be rotated
  Grease-Leakage                          and fixed at any desired position
  Placed in the following portions;       without tool.
  *Joint between gear housing and
   Bearing box
  *Shaft lock pin installation hole

  High Dust-Proof Construction
  *All dust-proof ball bearing construction
  *Labyrinth ring on armature shaft
  *Dust-seal washer on all ball bearings
  *Protective zigzag varnish on armature
   and tape on field
                                                                                                                                P3/9
Comparison                  of products
 180mm (7") Electronic Angle Grinder
                             Mode No.                  Makita                             A               B                    C
                                             GA7010C/
 Specifications                              GA7011C
                                                               9067/ 9067L                A               B                    C

 Wheel size:                  Diameter        180 ( 7 )          180 ( 7 )           180 ( 7 )         180 ( 7 )           180 ( 7 )
       mm (")     Hole diameter             22.23 ( 7/8 )       22.23 (7/8)         22.23 (7/8)       22.23 (7/8)         22.23 (7/8)
                  110V/120V                    1,650
 Power input: W 230V                           2,000              2,000               1,800             1,800                1,520
                  220V/240V                    1,800
 No load speed: min-1=rpm                   8,400/ 6,000       8,500 / 6,600          7,000             8,000                7,600
  Electronic




               Constant speed under load        Yes                 No                   Yes             No                   Yes
               Soft start                       Yes                 No                   Yes             No                   Yes
               Current limiter                  Yes                 No                   Yes*            No                   No**
 Tool- Wheel change                             No                 No                    No              No                   Yes
 less   Wheel guard adjustment                  Yes                No                    Yes             No                   No
 Auto cut-out brush                             Yes                Yes                   Yes             Yes                  Yes
 Double insulation                              Yes                Yes                   Yes             Yes                  Yes
 Power supply cord: m (ft)                    2.5 (8.2)          2.5 (8.2)          4.0 (13.1)        4.0 (13.1)           4.0 (13.1)
                       Length               453 (17-7/8)         458 (18)          447 (17-5/8)       407 (16)            385 (15-1/8)
 Dimensions: mm (") Width                    200 (7-7/8)        200 (7-7/8)         194 (7-5/8)      196 (7-3/4)           193 (7-5/8)
                                  Height     137 (5-3/8)        139 (5-1/2)           127 (5)        114 (4-1/2)           109 (4-1/4)
 Net weight: kg (lbs)                         3.4 (7.5)          4.2 (9.3)           3.5 (7.7)         3.2 (7.1)           2.2 (4.9)
                                                                                                    Lock nut wrench
                                           Lock nut wrench Lock nut wrench        Lock nut wrench
 Standard equipment                                                                                    Side grip            Side grip
                                              Side grip       Side grip              Side grip
                                                                                                     Cut off wheel

 *electronic control + thermistor
 **thermistor only
 230mm (9") Electronic Angle Grinder
                             Mode No.                            Makita                                            D
 Specifications                                  GA9010C                           9069                            D
 Wheel size:      Diameter                         230 (9)                        230 (9)                    230 (9)
       mm (")     Hole diameter                  22.23 (7/8)                    22.23 (7/8)                22.23 (7/8)
                  110V/120V                         1,650
 Power input: W 230V                                2,000                         2,000                        1,200
                  220V/240V                         1,800
 No load speed: min-1=rpm                           6,000                         6,600                        4,000
  Electronic




               Constant speed under load             Yes                           No                           No
               Soft start                             Yes                          No                           No
               Current limiter                        Yes                          No                           No
 Tool- Wheel change                                   No                           No                           No
 less   Wheel guard adjustment                        Yes                          No                           No
 Auto cut-out brush                                   Yes                          Yes                          No
 Double insulation                                    Yes                          Yes                          Yes
 Power supply cord: m (ft)                        2.5 (8.2)                      2.5 (8.2)                  5.0 (16.4)
                       Length                   453 (17-7/8)                    458 (18)                    430 (17)
 Dimensions: mm (") Width                        250 (9-7/8)                   250 (9-7/8)                 250 (9-7/8)
                                  Height         137 (5-3/8)                   139 (5-1/2)                 130 (5-1/8)
 Net weight: kg (lbs)                             3.4 (7.5)                      4.2 (9.3)                    3.8 (8.4)
                                                                                                         Lock nut wrench
                                              Lock nut wrench                 Lock nut wrench               Side grip
 Standard equipment
                                                 Side grip                       Side grip                 Hex wrench
                                                                                                             Wrench
                                                                                                                P4/9
Comparison      of products
 [1] Grinding Test
 Test conditions: Ground a S45C Carbon steel plate for 10 minutes.
 Comparison of Amount of Stock Removed

  180mm (7") Angle Grinder                                    230mm (9") Angle Grinder
                           Little               Much                                  Little               Much

  Makita GA7010C                          90                  Makita GA9010C                               95

  Makita 9067                            100                  Makita 9069                           100

  A       A                               75                                     0     20      40     60   80      100

  B       B                               75

  C       C                               65                    Note: Numbers in these graphs are relative values
                                                                      when the amount removed by Makita 9067/9069
                     0     20       40     60   80      100           are indexed at 100.


 [2] Cutting Test (1)
 Test conditions: Cut a 600mm long concrete plate to a depth of 20mm.
 Comparison of Cutting Speed

  180mm (7") Angle Grinder                                    230mm (9") Angle Grinder
                           Slow                  Fast                                 Slow                  Fast

  Makita GA7010C                         105                  Makita GA9010C                        105

  Makita 9067                            100                  Makita 9069                           100

  A       A                               85                                     0     20      40     60   80      100

  B       B                               95

  C       C                               75                    Note: Numbers in these graphs are relative values
                                                                      when the time required by Makita 9067/9069
                     0     20       40     60   80      100           are indexed at 100.


 [3] Cutting Test (2)
 Test conditions: Cut a 600mm long concrete plate to a depth of 40nn.
 Comparison of Cutting Speed

  180mm (7") Angle Grinder                                    230mm (9") Angle Grinder
                           Slow                  Fast                                 Slow                  Fast

  Makita GA7010C                         105                  Makita GA9010C                         95

  Makita 9067                            100                  Makita 9069                           100

  A       A                               95                                     0     20      40     60   80      100

  B       B                              100

  C       C                               85                    Note: Numbers in these graphs are relative values
                                                                      when the time required by Makita 9067/9069
                     0     20       40     60   80      100           are indexed at 100.
                                                                                                                       P5/9
Repair
CAUTION: For your safety, before maintenance or repair, be sure to;
         1. Disconnect the machine from the power source.
         2. Remove the wheel from the machine.
[1] Necessary Repairing Tools
        Tool No./ Description                                                  Use for
 1R035/ Bearing Setting Plate                Press-fitting Ball bearings
 1R045/ Gear Extractor (large)               Removing Gear housing cover and Bearing box
 1R229/ 1/4" Hex Shank Bit M5                Removal/Installation of the Hex socket head bolts that fasten Bearing box
 1R269/ Bearing Extractor                    Removing ball bearing 608DDW on the commutator end of Armature shaft
 1R291/ Retaining Ring S and R Pliers        Removal/Installation of the Retaining ring that retains larger Spiral bevel gear
 1R340/ Bearing Retainer Wrench              Removal/Installation of Bearing retainer

[2] Lubrication                                                                 Fig. 1
Put 40g of Makita grease SG. No.0 into the gear room of Gear housing
for a long gear life. (Fig. 1)                                                    Gear room




[3] Disassembling and Assembling
Note: As listed to left, the grinders use different                   Smaller spiral bevel gear      Larger spiral bevel gear
      spiral bevel gears, and they are not              Model No.       (on armature shaft)               (on spindle)
      interchangeable.
                                                        GA7010C               11 teeth                       37 teeth
      Referring to this list, therefore, be sure to
      use correct gears for replacement.                GA7011C
                                                                                9 teeth                     43 teeth
                                                        GA9010C

[3]-1. Replacing Armature, Smaller Spiral Bevel Gear and Ball Bearing 6201LLB
 DISASSEMBLING
Note: Disassembling can be done without disassembling Gear             Fig. 2
       housing section.
1) After removing Carbon brushes, by removing four 5x30 Tapping                                             Slide Gear
   screws, Gear housing section can be separated from Motor housing.                                        housing cover.
2) Slide Gear housing cover until you see the corners on the end of
   Motor housing. And then by striking two of the corners with plastic
   hammer, the assembly of Armature and Gear housing cover can be
   separated from Motor housing. (Fig. 2)
3) Remove Hex nut M6 by turning counterclockwise while holding
   Armature firmly by hand. Now smaller Spiral bevel gear can be
                                                                                                        Strike two corners
   removed from Armature shaft by hand.
                                                                                                        on the end of
4) Remove Gear housing cover from Armature using Gear Extractor,
                                                                                                        Motor housing.
   large (No.1R045). (Fig. 3) Ball bearing 6201LLB is still on Gear
   housing cover at this step. Therefore, remove the bearing with
   arbor press and a round bar. (Fig. 4)
 Fig. 3                                                                Fig. 4
  Gear Extractor, large (No.1R045)               Gear housing cover
                                                                                         Round bar




                                                                                Gear housing cover
                              Ball bearing 6201LLB                                Ball bearing 6201LLB
                                                                                                                    P6/9
Repair
ASSEMBLING
Follow the reverse of disassembling procedure as described below.
1) Insert ball bearing 6201LLB straight into Gear housing cover.
   And then put Bearing setting plate (No.1R035) on arbor press, and then put Gear housing cover on Bearing setting plate.
   Press-fit Armature to Gear housing cover using arbor press. (Fig. 5)
2) Install smaller Spiral bevel gear on Armature shaft, and tighten Hex nut M6 securely with a spanner 10.
   And then install the assembly of Armature and Gear housing cover on motor housing, and align the screw holes on Gear
   housing cover with those of Motor housing.
3) Aligning the protrusion on gear housing with that on Motor housing, fit Gear housing to gear housing cover. (Fig. 6)
   Fasten Gear housing to Gear housing cover and Motor housing with four 5x30 Tapping screws.
Fig. 5                                                              Fig. 6
                                                                      Gear housing             Gear housing cover


         Armature
                                                                                                        Motor housing

                                           Gear housing cover




                                         Bearing Setting Plate               Align the projection on Gear housing
                                                  (No.1R035)                 with that on Motor housing.


[2]- 2. Replacing Larger Spiral Bevel Gear and Ball Bearing 6202DDW
DISASSEMBLING
Note: Disassembling can be done without disassembling Gear housing section.
1) Using a Makita impact driver and Hex shank bit M5 (No. 1R229), remove four M5x16 Hex socket bolts that fasten
   Bearing box to Gear housing.
2) Insert two slotted screwdrivers into two diagonal positions on the slit between Bearing box and Gear housing.
  And twist the two screwdrivers at the same time till Bearing box is lifted up approximately 3mm.
  And then insert the screwdrivers further into the slit, and remove Gear housing from Gear housing cover by lifting it
   up with the screwdrivers. (Fig. 7)
Fig. 7


                                Slotted screwdriver




         Bearing box

                Gear hosing


                                                                                                 (continued to next page)
                                                                                                                   P7/9
Repair
[3]- 2. Replacing Larger Spiral Bevel Gear and Ball Bearing 6202DDW (cont.)
DISASSEMBLING
3) Remove Ball bearing 608LLB from spindle using Bearing extractor (No.1R269) as illustrated to left in Fig. 8.
4) Remove Retaining ring S-15 from Spindle using Retaining ring S and R pliers (No.1R291) as illustrated
   to right in Fig. 8. Now larger Spiral bevel gear and Woodruff key can be removed from Spindle by hand.
5) Remove spindle by pushing with Gear Extractor, large (No.1R045). (Fig. 9)
Fig. 8                                                                        Fig. 9

              Bearing Extractor                          Retaining Ring
                   (No.1R269)                            S and R Pliers
                                                         (No.1R291)             Gear Extractor, large (No.1R045)




                     Bearing box

                                                             Retaining
                                                             ring S-15


                                                                                                        Spindle
                     Ball bearing
                     608LLB

6) Hold Bearing box securely with vise, and remove           Fig. 10
   Bearing retainer from Bearing box using Bearing
                                                              Turn the handle of
   retainer wrench (No.1R340) as illustrated in Fig. 10.
                                                              Bearing retainer
7) Remove Ball bearing 6202DDW from Bearing box                                                               Bearing box
                                                              wrench (No.1R340)
   by hitting it straight against the surface of work bench.
                                                              counterclockwise.
   If cannot be removed, use arbor press.




ASSEMBLING                                                                 Fig. 11
Follow the reverse of disassembling steps.
Note: When installing the larger Spiral bevel gear onto Spindle,
      Be careful not to allow Woodruff key 4 to be out of position.         Larger spiral bevel gear
      It is recommended to apply grease to the key slot on Spindle
      in order to hold the Woodruff key securely in place. (Fig. 11)

                                                                                Woodruff key 4



[3]- 3. Replacing Shaft Lock Section
DISASSEMBLING                                                              Fig. 12
1) Remove Bearing box from Gear housing. (Fig. 7)
2) Pull off Shoulder pin 7 with pliers while pushing Pin cap with a  Shoulder pin 7                        Gear housing
   finger. (Fig. 12)
Note: Do not pull off shoulder pin 7 without holding pin cap because Compression
       Compression spring 7 would sling Pin cap.                     spring 7
 ASSEMBLING
Follow the reverse of disassembling steps.
Note: Do not reinstall removed Pin cap because removal of Shoulder
      pin 7 damages the inside surface of Pin cap. Be sure to remove                 Pin cap
      plastic dust of Pin cap from Shoulder pin 7 and to install it onto
      a brand-new Pin cap.
                                                                                                                         P8/9
Circuit     diagram
Fig. 13


                                                        Blue or white        Insulated
                                                                             terminal
                                                                                                   Field
                                                                                                                        Insulated
                                                            Controller                                                  terminal


                                              Switch
                                                                                                           Insulated
                                                                                                           terminal
                                                                     Pick up coil
 Power supply cord

                                                                                             Color index of lead wires' sheath
                                                  Noise                                       Black
                                                  suppressor                                  White
                                                                                              Red
   The parts illustrated in this                              Insulated                       Orange
   gray square are not used                                   terminal      Choke coil
                                                                                              Blue
   for some countries.

Wiring    diagram
 [1] Wiring on Motor Housing
 1) Draw the lead wires of (a), (b), (c), (d), (e) and (f)                               Motor housing
    through the openings (areas colored gray), and hold
    them with lead wire holders. (Fig. 14)
 2) And then route the lead wires as illustrated below
    in Fig. 14.
 Note: Illustrated in Fig. 14 is Motor housing
       viewed from the side of A.                                                                 [A]
Fig. 14


  (a) Field lead wire (white)
                                                       (b) Field lead wire (black)         Put (a) Field lead wire (white) under
  (c) Field lead wire (black)                                                              (b) Field lead wire (black) when
  Lead wire from                                                                           holding them with lead wire holders.
  Choke coil (orange)*
                                                                                           (d) Connecting lead wire (black)
    Put insulated terminal                                                                    of brush holder
    in this compartment
    on Motor housing.                                                                       (e) Connecting lead wire (black)
                                                                                                of brush holder
                                                         Lead wire
                                                         holders                                Put insulated terminal
                                                                                                in this compartment
  Hold the lead wire from                                                                       on Motor housing.
  Choke coil (orange)*
  with the lead wire holders
  located outside of the
                                                                                         Lead wire from Choke coil (orange)*
  lead holders for (c) Field
  lead wire (black).                                                                      (f) Field lead wire (black)
                                                                                          Put (f) Field lead wire (black) on the
                                Choke coil*                               Pickup coil     lead wire from Choke coil (orange)*
                                              Put choke coil* into                        when holding them with lead wire
                                              the opening.                                holder.


                                                                                         *Some countries do not use Choke coil.
                                                                                                                      P9/9
Wiring       diagram
 [2] Wiring of the Lead Wires of Pickup Coil
                                                                                              Motor housing
 1) First, route the white lead wire of pickup coil under the rib.
    And then hold both of the white and the black lead wires
    with the lead wire holder. (Fig. 15)
 2) When installing Handle (L) onto Motor housing, route the                                            Pickup coil
    two lead wires as illustrated in Fig. 16.
   Fig. 15                                                           Fig. 16

                      Lead wire holder
                                                                                        Rib




     Lead wire of
     pickup coil
     (black)

     Lead wire of
     pickup coil                                    Pickup coil
                                         Rib                               Handle (L)                  Boss on Handle (L)
     (white)

 [3] Wiring in Handle
   Fig. 17

       Before setting Switch in place, hold the four lead wires
       with the lead wire holders under switch as illustrated below.


                                                 Lead wire from Noise suppressor (white)*
                                                 Lead wire from Controller (blue or white)
                                                 Field lead wire (white)
                                                 Lead wire from Controller (red)


                     Lead wire holders

                                                                     Put the lead wire from Controller (blue or white)
                                                                     and the lead wire from Choke coil (orange)*
                                                                     under the other lead wires.

              Noise suppressor*                                                                      Boss



                                               Switch
                                                                                                     Rib




         Route lead wires between rib and boss                                                       Boss
         and between rib and wall of handle (L).

                                                     Note: Some countries do not use the electrical parts with an asterisk.



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