Encoder

Type

Potentiometer

Type

455

Hollow Shaft

Type Devices

21mm Size Encoder Type

Hollow-center shaft encoder with 4mm height contribute to space saving and multifunctioning.

Hollow Shaft Type Devices

No.

Product Line

10mA 5V DC

50,000cycles

Rating

Items

Specifications

Operating life

Without load

With load

50,000cycles

Typical Specifications

Vertical

9

16

±7

7

±5

30

18

15

9

Without

EC21A1520401

EC21A1540401

EC21A0920401

Product No.

1

2

No.

Push-on

switch

Operating

direction

Actuator

length

（mm）

Detent torque

（mN・m）

Number of

detent

Number of

pulse

600

Minimum order

unit

（pcs.）

1.5

2

90

°

C

A

B

22.3

16

2.6

16

.6

23

.2

3–ø1 holes

ø1

.5

h

ole

90

°

5

Dimensions

Unit:mm

PC board mounting hole dimensions

（Do not wire the shaded area）

1.5

90

°

C

A

B

22.3

2.6

16

.6

23

.2

3–ø1 holes

90

°

5

Style

1

2

Photo

3.5

9

4

3

2

120

°

2-21.6

4-2.5

1

2-8

A

B

C

Mounting surface

3.5

9

4

3

2

120

°

21.6

4-2.5

1

2-8

A

B

C

Mounting surface