Ø20mm absolute encoder

AK20

AK20 is a high-resolution device offering an absolute precision up to 20 bits, specifically designed for applications with limited space

• Miniature size (Ø 20 mm)
• Various diameter options for solid and blind hollow shafts
• Several flexible couplings with different mounting options
• Special encoder design for extended temperature ranges (-40oC + 85oC)
• Round cable version

Mechanical data

Maximum shaft speed 10 000 RPM
Moment of inertia < 0.4 gcm2
Starting torque 5 x 10-4 Nm
Shaft load Axial: 3 N
Radial (at shaft end): 3 N
Vibrations (55 Hz to 2000 Hz) ≤ 100 m/s2
Shock (6 ms) ≤ 300 m/s2
Operating temperature Standard: 0oC – 70oC
Extended: -40oC – 85oC
Storage temperature  -40oC – 105oC
Ingress Protection (EN 60529) IP50
Mass (without cable) Standard: < 20 g
For extended temperature option with stainless steel: < 30 g

Electrical data

Electrical interface1)  SSI BISS-C
System accuracy ± 75 arc. sec.
Resolution (positions per turn) up to 20 bits (1 048 576 positions)
Output code Binary / Gray Binary
Supply voltage  + 5 V ± 5 %
Current consumption Max 120 mA

Accessories

Downloads

Order code

AK20X1 – X21 – X3 – X4 – X5 – X6 – X7 – X8/X9
Type (X1) Output Signal Version (X2) Bit Number (X3) Power Supply (X4) Operating Temperature (X5) Shaft Diameter (X6) Cable Length (X7) Connector Type (X8) Flexible Coupling (X9)
S – solid shaft
H – blind hollow shaft
S – SSI
B – BiSS C
B1 – 1 bit
…-…
B20 – 20 bits
B – Binary
G – Gray*
* only for SSI output signal.
N – 0oC – 70oC (standard)
T – -40oC – 85oC (extended)
02M – ⌀ 2 mm
03M – ⌀ 3 mm
04M – ⌀ 4 mm
R0500 – 500 mm
R1000 – 1000 mm
R2000 – 2000 mm
W – without connector
B12 – round, 12 pins
C9 – round, 9 pins
C12 – round, 12 pins
D9 – flat, 9 pins
D15 – flat, 15 pins
W – without coupling
1 – flexible coupling version 1*
2 – flexible coupling version 2*
* only for blind hollow shaft encoder type

Order example: AK20S-S-B20-B-N-R0500-W-W

Order form

    Check the "Order code" tab in the product page to see how to know your order code.