Encoder
12mm Size Insulated Shaft Type
EC12
Series
Dimensions
No.
Photo
Hollow shaft
3.5
1.2
5
8.5
(0.6)
2.65
(10.2)
Unit:mm
Style
14
12.4
(8.2)
¿3.1
2.1
2
PC board mounting hole dimensions
（Viewed
from mounting side）
13.2
2
2.1
Detector
Push
Slide
3
¿6
2
¿6.6
(0.8)
3.5
Mounting surface
M9x0.75
R
1
5.2
13.2
7.5
A C B
5
3-ø1 holes
5
With bushing
Rotary
Encoders
3.5
5.5
7
2
LM1
A
No thread area
4.5
¿6
14
12.4
(8.2)
13.2
¿8
(10.2)
2
2
2.1
Power
Dual-in-line
Package Type
TACT Switch
TM
Custom-
Products
4
3.5
Locating lug detail
Y
X
X
0.4
7
1
7.5
Mounting surface
13.2
8
A C B
5
Y
2.5
LM1
20
25
30
A
-
-
5
R
1
7
12
12
13.3
11.1
6.85
2.05
E
A
11.7
3-ø1 holes
With push-on switch
type
3
17.5
5
Switch Travel
0.5
4.475
φ
5.975
14.1
12.5
A
E
B
8.3
5 (6)
2
2.05
Incremental
Type
Absolute
Type
5
B
2.15
C
3.5
φ
6.8
D
5-
φ
1Holes
Mounting surface
5.95
Product Varieties
Shaft Dimensions
Flat Type
With high collar type
LM
1
R
1
Unit:mm
Detailed dimensions
LM
1
17.5
4.5
¿6
R
1
5
7
7
12
12
20
22.5
25
30
Mounting surface
With bushing type
3.5
5.5
L
B
LM
1
R
1
4.5
ø6
0.5
Detailed dimensions
LM
1
20
25
30
35
Mounting surface
L
B
7
7
12
12
R
1
7
12
12
12
2
1
3.5
Excluding the 12 detent type
194
3.45
C
D
ALPS [ ALPS ELECTRIC CO.,LTD. ]
