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Makita GA7020R Technical Information

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T
ECHNICAL INFORMATION
Model No.
Description
C
ONCEPT AND MAIN APPLICATIONS
Models GA7020R/ GA9020R are developed as sister tools of
GA7020S/ GA9020S.
Additionally to the benefits of models GA7020S/ GA9020S,
GA7020R/ GA9020R feature:
- Anti-restart function
- Large trigger switch with a lock lever having two different
actions for releasing the switch from Lock-off position and
locking the switch on in order to comply with the requirement
of the new IEC Regulations
Wheel size is:
180mm (7'') for Model GA7020R
230mm (9'') for Model GA9020R
S
pecification
Voltage (V)
110
120
220
230
240
Specification
Wheel size: mm (")
No load speed: min-
Soft start feature
Anti-restart function
Double insulation
Power supply cord: m (ft)
Net weight
: kg (lbs)
*3
for Brazil, Australia
*1
for all countries except the two listed above
*2
Weight according to EPTA-Procedure 01/2003, with Side grip, Wheel cover, Inner flange, Lock nut
*3
S
tandard equipment
Lock nut wrench 35 ......... 1 pc
Side grip 36 ...................... 1 pc
Note: The standard equipment for the tool shown above may vary by country.
O
ptional accessories
Vibration absorbing side grip
Toolless quick adjustable wheel cover
Toolless lock nut
Dust cover attachment
Plastic carrying case
GA7020R: Accessories for 180mm angle grinder
GA9020R: Accessories for 230mm angle grinder
GA7020R/ GA9020R
Angle Grinders 180mm (7'')/ 230mm (9'')
Cycle (Hz)
Current (A)
15
50/ 60
15
50/ 60
10.5
50/ 60
10
50/ 60
9.6
50/ 60
Model No.
Diameter
Hole diameter
= rpm.
1
W
Continuous Rating (W)
Input
1,650
---
2,200
2,200
2,200
GA7020R
180 (7)
22.23 (7/8)
8,500
Yes
Yes
Yes
2.0 (6.6)
/ 2.5 (8.2)
*1
5.6 (12.4)
L
H
Dimensions: mm (")
GA7020R
Model No.
Length (L)
473 (18-5/8)
Width (W)
200 (7-7/8)
Height (H)
140 (5-1/2)
Max. Output (W)
Output
1,100
2,750
1,100
2,750
1,400
3,300
1,400
3,300
1,400
3,300
GA9020R
230 (9)
6,600
*2
5.8 (12.8)
PRODUCT
P 1/ 9
GA9020R
250 (9-7/8)

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Summary of Contents for Makita GA7020R

  • Page 1 Model No. GA7020R/ GA9020R Description Angle Grinders 180mm (7'')/ 230mm (9'') ONCEPT AND MAIN APPLICATIONS Models GA7020R/ GA9020R are developed as sister tools of GA7020S/ GA9020S. Additionally to the benefits of models GA7020S/ GA9020S, GA7020R/ GA9020R feature: - Anti-restart function - Large trigger switch with a lock lever having two different Dimensions: mm (")

  • Page 2: Necessary Repairing Tools

    Lubricant Amount Fig. 1 Gear housing complete Gear room Makita grease SG No.0 [3] DIFFERENCE BETWEEN GA7020R AND GA9020R In addition to Wheel cover and available Wheels, the following parts are different. Item No. Parts of GA7020R Parts of GA9020R...
  • Page 3 P 3/ 9 epair [4] DISASSEMBLY/ASSEMBLY [4]-1. Armature, Small spiral bevel gear, Ball bearing 6301DDW DISASSEMBLING (1) Disassemble Armature and Small spiral bevel gear as illustrated in Figs. 2 and 3. Fig. 2 Remove Carbon brushes. And then Remove Gear housing complete Remove Bearing box and M6x22 remove 5x35 Tapping screws.
  • Page 4 P 4/ 9 epair [4] DISASSEMBLY/ASSEMBLY [4]-1. Armature, Small spiral bevel gear, Ball bearing 6301DDW (cont.) DISASSEMBLING (3) Disassemble Armature as illustrated in Fig. 6. Fig. 6 Remove M8 Hex nut and small Spiral bevel gear again. Remove Ball bearing 6200DDW with 1R269. Ball bearing 6301DDW can be removed by hand.
  • Page 5 P 5/ 9 epair [3] DISASSEMBLY/ASSEMBLY [3]-1. Armature, Small spiral bevel gear, Ball bearing 6301DDW (cont.) ASSEMBLING (2) Assemble Ball bearing 6301DDW to Gear housing complete as illustrated in Fig. 8. Fig. 8 Armature with Ball Armature bearing 6301DDW 1R005 Retaining Rubber ring 38 Ball bearing...
  • Page 6 P 6/ 9 epair [3] DISASSEMBLY/ASSEMBLY [3]-2. Large spiral bevel gear, Ball bearing 6203DDW, Ball bearing 6000LLB DISASSEMBLING (1) Large spiral bevel gear can be disassembled as illustrated in Figs. 10, 11R and 12. Fig. 10 Remove Bearing box from Gear Remove Ball bearing 6000LLB Enlarging the clearance of Ring spring 11 housing complete.
  • Page 7 P 7/ 9 epair [3] DISASSEMBLY/ASSEMBLY [3]-2. Large spiral bevel gear, Ball bearing 6203DDW, Ball bearing 6000LLB (cont.) DISASSEMBLING (2) Ball bearing 6203DDW can be disassembled as illustrated in Fig. 13A, or Fig. 13B. Fig. 13A Fig. 13B If it is difficult to remove as illustrated in Fig.
  • Page 8 P 8/ 9 epair [3] DISASSEMBLY/ASSEMBLY [3]-3. Shaft lock mechanism DISASSEMBLING (1) Remove Gear housing complete from Motor housing. Remove Bearing box from Gear housing complete as illustrated in Fig. 2. (2) Remove Armature from Gear housing complete as illustrated in Fig. 3. (3) Shaft lock mechanism can be disassembled as illustrated in Figs.

  • Page 9: Circuit Diagram

    Black (Bumper side) Commutator side White Blue lead wire is used for some countries. Brown lead wire is used for some countries. Makita logo side Power supply cord Switch Noise Blue lead wire is used suppressor for some countries.

This manual is also suitable for:

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