Hollow Shaft Type Devices
45mm Size Encoder/Potentiometer
EC45A/RK45A
Series
Large ring, heavy torque device perfect for large ring knob design.
Hollow Shaft
Type Devices
Typical Specifications
Specifications
Items
Encoder
Rating
（max.）
Operating life
0.5mA 5V DC
30,000cycles
Potentiometer
0.05W
Product Line
Encoder Incremental type）
（
Number of detent
30
Number of pulse
15
Detent torque
（mN
m）
・
30±14
Minimum order unit
（pcs.）
200
Product No.
EC45A1520404
Drawing
No.
1
Encoder Absolute type）
（
Output code
5bit
Gray code
Positions
31
Rotational
angle
240°
Detent torque
（mN
m）
・
36±16
Minimum order
unit pcs.）
（
200
Product No.
EC45AG520402
Drawing
No.
2
Potentiometer
Total
resistance
Encoder
Type
Potentiometer
Type
10kΩ
Resistance
taper
B
Positions
5
Rotational
angle
240°
Detent torque
（mN
m）
・
50±20
Minimum order
unit pcs.）
（
200
Product No.
RK45A1100004
Drawing
No.
3
Note
Products other than those listed in the above chart are also available. Please contact us for details.
Dimensions
No.
Photo
EC45A
Incremental Type
ø44.5
ø35.6
7
Unit:mm
Style
PC board mounting hole dimensions
（Viewed
from switch mounting face）
20
9
3.5
44.4
42.8
36
2.6
3.2
18
44.4
42.8
36
1
18.5
5
1
2
3
22.7
3
3.5
EC45A
Absolute Type
ø44.5
ø35.6
20
9
7
3.5
3-¿
1.2
34.8
9
ho
les
28.2
2.6
3.2
28.2
4
5
6
2-
ø2
ho
33
les
36
21
2
18.5
3
22.7
5
1
2
3
34.8
9
3.5
ho
le s
460
6-
ø1
.2
25
25
2-
ø3
.2
ho
le
s
2-
¿3
.2
ho
les
ALPS [ ALPS ELECTRIC CO.,LTD. ]
