Scara Robot Manipulator Manual
Setup & Operation    3. Environments and Installation 
26  G3 Rev.1 
A 
A
B 
A 
B
B
B 
A
T
able Top Mounting 
Center of Joint #3 
Maximum space 
G3-301S/C 
G3-251S/C
Standard -R  -L 
a 
Length of Arm #1 (mm) 
120 170 
b 
Length of Arm #2 (mm) 
130 
84 / 92  104.8 / 107.1 120.7 
c 
(Motion range) 
Z : 150/120 
d 
Motion range of Joint #1 (degree) 
140 140 
−125 to +150  −150 to +125
e 
Motion range of Joint #2 (degree) 
141 / 137  142 / 141 
−135 to +150 
/ −135 to +145 
−150 to +135
/ −145 to +135
f 
(Mechanical stop area) 
79.3 104.8 / 107.1 96.2  86.8 
g 
Joint #1 angle to hit mechanical stop (degree) 
2 2 
A:3 
B:6 
A:6 
B:3 
h 
Joint #2 angle to hit mechanical stop (degree) 
2.3 3.8 
A:8.3 
B:3.3 
A:3.3 
B:8.3 
G3-351S/C 
Standard -R  -L 
a 
Length of Arm #1 (mm) 
220 
b 
Length of Arm #2 (mm) 
130 
142.3 / 146.6 191.6 
c 
(Motion range) 
Z : 150/120 
d 
Motion range of Joint #1 (degree) 
140 
−110 to +165 −165 to +110 
e 
Motion range of Joint #2 (degree) 
−142 
−120 to +165
/ −120 to+160
−165 to +120 
f 
(Mechanical stop area) 
134.2  100.3 / 107.5 100.3 / 107.5 
g 
Joint #1 angle to hit mechanical stop (degree) 
2 
A:5 
B:4 
A:4 
B:5 
h 
Joint #2 angle to hit mechanical stop (degree) 
3.8 
A:2.8 
B:3.8 
/ A:7.8   
 B:3.8 
A:3.8 
B:2.8 
/ A:3.8 
 B:7.8 










