Comparisons With Similar Products; Specification Comparisons; Practical Test Data - Hitachi G 12SA2 Technical Data And Service Manual

6. COMPARISONS WITH SIMILAR PRODUCTS

6-1. Specification Comparisons

Maker
Model name
Capacity:
Depressed-center wheel dia.
Power input *1
Power output *1
Max. power output *1
No-load speed
No-load sound pressure level
Service life of carbon brushes *2
Weight *3
(Actual weight)
Dimensions
*1 Depends on market
*2 Service life of carbon brushes in the
continuous rated load test
*3 Weight without cord, side handle, depressed-
center wheel, wheel nut, wheel washer and
wheel guard

6-2. Practical Test Data

Comparison of temperature rise of stator coil section:
The graph below shows the relationship between load and temperature rise of the stator coil. The temperature
rise of the Models G 12SA2 and G 13SB2 is the lowest among similar models. This means that the resistance to
overload usage of the Models G 12SA2 and G 13SB2 is superior to other models.
G 12 SA2
G 13SB2
115/125
(4-1/2"/5")
(mm)
(W)
(W)
(W)
(/min)
(dB/A)
(hr)
1.9 (4.2 lbs.)
(kg)
2.0 (4.4 lbs.)
(kg)
285 (11-1/4")
L (mm)
70 (2-3/4")
H (mm)
200
150
100
50
0
HITACHI
G 12SA
G 13SB
115/125
(4-1/2"/5")
950 750
520
690
1,150
1,430
10,000 10,000
84 80
210 110
2.1 (4.6 lbs.)
2.2 (4.9 lbs.)
288 (11-5/16")
70 (2-3/4")
G 12SA2
G 12SA
G 13SB2
G 13SB
B
C
Load
Fig. 4
--- 4 ---
B
125 115/125
(5") (4-1/2"/5")
900 900
540 430
1,190 1,430
11,000 10,000
88 86
150 95
1.75 (3.9 lbs.) 1.75 (3.9 lbs.)
1.8 (4.0 lbs.) 1.8 (4.0 lbs.)
298 (11-3/4") 305 (12")
70 (2-3/4") 90 (3-35/64")
L
C