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10. HG-UR SERIES
10 - 6
10.5 Servo motors with special shafts
The servo motors with special shafts indicated by the symbol (K) in the table are available. K is the symbol
attached to the servo motor model names.
Servo motor
Shaft shape
Key shaft (without key)
HG-UR_(B)K K
Servo motor
Variable dimensions
S R Q W QK QL U r
HG-UR72(B)K
22h6 55 50
6
0
-0.036
42 3
3.5
+0.1
0
3
HG-UR152(B)K
28h6 55 50
8
0
-0.036
40 3
4
+0.2
0
4
HG-UR202(B)K
HG-UR352(B)K
HG-UR502(B)K
35
+0.010
0
65 60
10
0
-0.036
50 5
5
+0.2
0
5
QK
A
Q
R
A
QL
U
W
r
M8 Depth 20
φ
Shaft section view A-A
S
10.6 Oil seal
The oil seal prevents the entry of oil into the servo motor.
Install the servo motor horizontally, and set the oil level in the gear box to be lower than the oil seal lip
always.
Gear
Shaft
Servo motor
Oil seal
Height above oil level h
Lip
Servo motor
Oil level h
[mm]
HG-UR72(B)
HG-UR152(B)
20
HG-UR202(B)
HG-UR352(B)
HG-UR502(B)
25