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Makita GA7060 Technical Information

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T
ECHNICAL INFORMATION
Model No.
Description
C
ONCEPT AND MAIN APPLICATIONS
These models have been developed for heavy duty applications
such as foundry grinding.
The motor is more durable than that of our existing models with
the following improvements:
・Design of anti layer short of Armature (Commutator and its wire
connected portion)
・Low-absorbent motor housing to reduce water absorption
・Adoption of spiral spring type Brush holders yet with a compact body
SJS II (Super joint system II) for GA7061, GA7061R, GA9061 and
GA9061R provides increased machine durability by absorbing
the vibration produced by the wheel grinding or cutting material.
S
pecification
Voltage (V)
110
120
220
230
240
Specification
Diameter
Wheel size:
Hole diameter
mm (")
Max thickness
No load speed: min -ı = rpm
Shock absorbing system
Soft start
Electronic
control
Anti-restart function
Vibration level
: m/s
*1
Protection against electric shock
Power supply cord: m (ft)
Weight according to EPTA-
Procedure 01/Ver.2.1
*1 Triaxial vector sum. According to EN60745-2-3. *2 With Side grip, Wheel cover, Lock nut, Inner flange
S
tandard equipment
Side grip
Lock nut wrench
Note: The standard equipment may vary by country or model variation.
O
ptional accessories
Anti vibration grip
Toolless lock nut
Dust cover attachment
Toolless wheel cover
GA7060, GA7060R, GA7061, GA7061R /
GA9060, GA9060R, GA9061, GA9061R
Angle Grinder 180mm (7") /
Angle Grinder 230mm (9")
Current (A)
Cycle (Hz)
15
50/60
15
50/60
10.5
50/60
10
50/60
9.6
50/60
Model No.
GA7060/GA7060R
180 (7)
8,500
7.5
2
5.3 (11.7)/
: kg (lbs)
*2
5.4 (11.9)
Wheel cover
Flap disc 180 (Grit: 16, 20, 24, 30, 50, 80, 100, 120)
Rubber pad
Wire cup brush
H
Model
Length (L)
Width (W)
Height (H)
Continuous Rating (W)
Input
1,650
N/A
2,200
2,200
2,200
GA9060/GA9060R
GA7061/GA7061R
230 (9)
22.23 (7/8)
6.5 (1/4)
6,600
No
No/ Yes
No/ Yes
6.5
Double insulation
2.5 (8.2), 2.0 (6.6) for Brazil and Australia
5.5 (12.1)/
5.6 (12.4)
1 / 25
OFFICIAL USE
for ASC & Sales Shop
March 2016
L
W
Dimensions: mm (")
GA7060, GA7060R/
GA9060, GA9060R/
GA7061, GA7061R
GA9061, GA9061R
450 (17-3/4)
200 (7-7/8)
250 (9-7/8)
144 (5-5/8)/
144 (5-5/8)/
145 (5-3/4)
145 (5-3/4)
Max Output (W)
Output
800
800
1,400
1,400
1,400
GA9061/GA9061R
180 (7)
230 (9)
8,500
6,600
Yes (SJS II)
No/ Yes
No/ Yes
7.0
5.5 (12.1)/
5.7 (12.6)/
5.5 (12.1)
5.7 (12.6)
Abrasive discs
Lock nut release socket
Plastic carrying case
2,200
2,200
3,000
3,000
3,000
6.5

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Summary of Contents for Makita GA7060

  • Page 1 OFFICIAL USE for ASC & Sales Shop ECHNICAL INFORMATION March 2016 GA7060, GA7060R, GA7061, GA7061R / Model No. GA9060, GA9060R, GA9061, GA9061R Angle Grinder 180mm (7") / Description Angle Grinder 230mm (9") ONCEPT AND MAIN APPLICATIONS These models have been developed for heavy duty applications such as foundry grinding.
  • Page 2 Armature, Ball bearing 6301DDW/ 6200DDW, Small spiral bevel gear ................6 5-1-1 Disassembling ................................6 5-1-2 Assembling .................................. 8 Large spiral bevel gear, Ball bearing 608ZZ/ 6905DDW for models GA7060, GA9060, GA7060R, GA9060R ....9 5-2-1 Disassembling ................................. 9 5-2-2 Assembling ................................... 11 Large spiral bevel gear, Ball bearing 608ZZ/ 6905LLB/ 6203DDW, SJS-II components for models GA7061, GA9061, GA7061R, GA9061R ..................................
  • Page 3 Be sure to use correct gears for replacement. Gear teeth of View and Gear teeth of Model No. Small spiral bevel gear Large spiral bevel gear on Armature shaft on Spindle GA7060, GA7060R GA7061, GA7061R GA9060, GA9060R GA9061, GA9061R 3 / 25...
  • Page 4 NECESSARY REPAIRING TOOLS Code No. Description Use for 1R003 Retainer ring pliers removing Ring spring 13 1R005 Retaining ring pliers RT-2N removing/assembling Retaining ring R-42 1R015-A Hex head bit H4-150 removing Diffuser 1R029 Bearing setting pipe 23-15.2 press-fitting Large spiral bevel gear 1R030 Bearing setting pipe 25-17.2 press-fitting Spindle, Joint sleeve...
  • Page 5 First, make very thin oil film on O ring 19 with Lubricating Note: Be sure to use both VG100 and Makita grease FA No.2 in oil VG100, and then fit the ring accordance with the instructions shown left, because of into the groove of Large spiral the following reasons.
  • Page 6 REPAIR Armature, Ball bearing 6301DDW/ 6200DDW, Small spiral bevel gear 5-1-1 Disassembling Fig. 5-1-1-1 Fig. 5-1-1-2 [1] Remove two 4x14 Tapping screws from both sides of machine. [2] Open Brush holder cover L/R of Motor housing. 4x14 Tapping screw Brush holder cover R Motor housing Fig.
  • Page 7 Armature, Ball bearing 6301DDW/ 6200DDW, Small spiral bevel gear (cont.) 5-1-1 Disassembling (cont.) Fig. 5-1-1-7 Fig. 5-1-1-9 [9] Fit an offset wrench into M8 Hex nut and place the opposite end [7] Remove four 5x30 to a workbench as the stopper. Tapping screws .
  • Page 8 Face the indication of Parts No. for Diffuser toward Gear housing complete, Switch and fit Diffuser into Gear housing complete. Projection of Bearing box Indication of Parts No. for Diffuser Direction of Gear housing Makita logo complete on Motor housing 8 / 25...
  • Page 9 Large spiral bevel gear, Ball bearing 608ZZ/ 6905DDW for models GA7060, GA9060, GA7060R, GA9060R 5-2-1 Disassembling Fig. 5-2-1-1 Fig. 5-2-1-2 [1] Remove Ball bearing 608ZZ with 1R269. [2] Remove Ring spring 13 with 1R003, 1R212-A and 1R212-B. 1R212-A 1R212-B 1R269 Step of Spindle complete (See the step [3].)
  • Page 10 Large spiral bevel gear, Ball bearing 608ZZ/ 6203DDW for models GA7060, GA9060, GA7060R, GA9060R (cont.) 5-2-1 Disassembling (cont.) Fig. 5-2-1-6 [6] Remove three M5x16 Pan head screws, then remove Bearing retainer 50. M5x16 Pan head screw (3 pcs.) Bearing retainer 50 Fig.
  • Page 11 Large spiral bevel gear, Ball bearing 608ZZ/ 6203DDW for models GA7060, GA9060, GA7060R, GA9060R (cont.) 5-2-2 Assembling Fig. 5-2-2-1 Fig. 5-2-2-2 [2] Set Bearing retainer 50 in place by tightening [1] Press-fit Ball bearing 6203DDW M5x16 Pan head screws. M5x16 Pan head screws (3 pcs.)
  • Page 12 Large spiral bevel gear, Ball bearing 608ZZ/ 6905LLB/ 6203DDW, SJS-II components for models GA7061, GA9061, GA7061R, GA9061R 5-3-1 Disassembling Fig. 5-3-1-1 Fig. 5-3-1-2 [1] Remove 608ZZ with 1R269. [2] Remove Retaining ring S-15 with 1R291. 1R291 1R269 Retaining ring S-15 Ball bearing 608ZZ Fig.
  • Page 13 Large spiral bevel gear, Ball bearing 608ZZ/ 6905LLB / 6203DDW, SJS-II components for models GA7061, GA9061, GA7061R, GA9061R (cont.) 5-3-1 Disassembling (cont.) Fig. 5-3-1-7 [7] Put 1R032 on the step of Spindle complete. Tap 1R032 carefully with the ram of an Arbor press until the press-fitting between Spindle complete and Large spiral bevel gear is loosened.
  • Page 14 Large spiral bevel gear, Ball bearing 608ZZ/ 6905LLB / 6203DDW, SJS-II components for models GA7061, GA9061, GA7061R, GA9061R (cont.) 5-3-1 Disassembling (cont.) Fig. 5-3-1-10 Fig. 5-3-1-11 [10] Slide Flat washer 17 so that you can [11] Receive Bearing box complete on two pieces of 1R258, then press down press it down in the next step.
  • Page 15 Large spiral bevel gear, Ball bearing 608ZZ/ 6905LLB / 6203DDW, SJS-II components for models GA7061, GA9061, GA7061R, GA9061R (cont.) 5-3-1 Disassembling (cont.) Fig. 5-3-1-13 Fig. 5-3-1-14 [14] Receive Bearing box complete with two [13] Hook the nails of 1R133 to Ball bearing 6905LLB as shown pieces of 1R350, and hold the bearing box below, then press down the nails with 1R245 to remove complete in a vise with two pieces of...
  • Page 16 Large spiral bevel gear, Ball bearing 608ZZ/ 6905LLB / 6203DDW, SJS-II components for models GA7061, GA9061, GA7061R, GA9061R (cont.) 5-3-2 Assembling Fig. 5-3-2-1 Fig. 5-3-2-2 [1] Press-fit Ball bearing 6203DDW [2] Set Flat washer 26 and Felt ring 22 in place. with 1R165.
  • Page 17 Large spiral bevel gear, Ball bearing 608ZZ/ 6905LLB / 6203DDW, SJS-II components for models GA7061, GA9061, GA7061R, GA9061R (cont.) 5-3-2 Assembling (cont.) Fig. 5-3-2-7 Fig. 5-3-2-8 Fig. 5-3-2-9 [6] Set Bearing retainer 59 in place by [7] Receive Spindle complete with 1R030. tightening Three M4x16 Pan head then press-fit the spindle into Large screws.
  • Page 18 Large spiral bevel gear, Ball bearing 608ZZ/ 6905LLB / 6203DDW, SJS-II components for models GA7061, GA9061, GA7061R, GA9061R (cont.) 5-3-2 Assembling (cont.) Fig. 5-3-2-13 Fig. 5-3-2-14 [13] Fit Retaining ring S-15 into [12] Set Balancer in place. the groove of Spindle complete with 1R291.
  • Page 19 Shaft lock mechanism 5-4-1 Disassembling Fig. 5-4-1-1 Pin cap [15] Tap Shoulder pin 7 with 1R308 1R308 and a metal hammer to remove the shoulder pin, Pin cap and Compression spring 8. Note: The removal step of the shoulder pin 8 shaves off the inside of the pin cap.
  • Page 20 Brush holder cover 5-5-1 Disassembling Fig. 5-5-1-1 Fig. 5-5-1-2 [2] Open Brush holder cover R. [1] Remove 4x14 Tapping screw from (In the same way, open Brush holder cover L. left/ right side of machine. Fig. 5-5-1-3 Remove one of the hinge of Brush holder cover R.
  • Page 21 Circuit diagram Note in repair: When the lead wire ends of Power supply cord do not have splices, you must attach them, and connect them to the switch. Fig. 5-7-1 GA7060/GA7061 /GA9060 / GA9061. Power supply cord Strain relief Straight terminal with lock black or brown Field ass’y...
  • Page 22 Wiring diagram GA7060/GA7061 /GA9060 / GA9061. Fig.5-8-1. Set Field ass’y in place of Motor housing in the direction shown below. Field lead wires Pass Field lead wires through this hole of Field lead wires Motor housing. Do not slacken them in Motor housing.
  • Page 23 Wiring diagram (cont.) GA7060R/GA7061 R/GA9060R / GA9061R. Fig.5-8-3 Set Field ass’y in place of Motor housing in the direction shown below. Field lead wires Field lead wires Pass Field lead wires through this hole of Motor housing. Do not slacken them in Motor housing. Field Motor housing Set Controller in place of Motor housing in the direction shown below.
  • Page 24 Wiring diagram (cont.) GA7060R/GA7061 R/GA9060R / GA9061R. (cont.) Fig.5-8-4 Fix the lead wire of Power supply cord Do not slacken Controller lead wires in each groove of Switch Fix Controller lead wires in each in the designated area. lead wire holder of Switch cover. Switch cover Power supply cord Switch...
  • Page 25 Assembling of Carbon brush Fig.5-9-1 Carbon brush must be set in place as follows: The terminal should come to portion A, the pigtail should come to portion B the direction of Carbon brush itself should be shown below. The pigtail must not be protruded from C area (in red dotted square.) Pigtail from Carbon brush: Portion B Terminal of Carbon brush: Portion A Fig.5-9-2...

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