AK90H Absolute Angle Encoder
AK90H - Image 2

Ø90mm absolute encoder

AK90H

Absolute angle optical encoder AK90H is a high-end device that enables high accuracy angular measurement up to ±5”. Encoder design with integral bearings, hollow-through shaft and integrated stator coupling makes it ideal for demanding applications such as machine tools.

Mechanical data

Mounting type With ring nut (type H) With shaft clamp (type P)
Shaft hollow-through shaft 20 mm hollow-through shaft 20mm
hollow-through shaft 22 mm
Moment of inertia 80 x 10-6 kgm2 85 x 10-6 kgm2 (of 20 mm shaft)
80 x 10-6 kgm2 (of 22 mm shaft)
Starting torque ≤ 0.01 Nm ≤ 0.01 Nm
Maximum mechanical speed ≤ 3000 rpm
Vibrations (55 Hz to 2000 Hz) ≤ 200 m/s2
Shock (6 ms) ≤ 200 m/s2
Operating temperature 0oC – 60oC
Storage temperature  -20oC – 60oC
Ingress Protection (EN 60529) IP64
Mass (without cable) ~ 1 kg

 

Electrical data

Electrical interface SSI BISS-C
Resolution (positions per turn) up to 26 bits (67 108 864 positions)
Clock frequency ≤ 4 MHz ≤ 10 MHz
Calculation time ≤ 5 us ≤ 5 us
Additional output signals 1 Vpp: 16 384 pulses/turn Optional
Cutoff frequency of incremental signals (-3 dB) ≥ 200 kHz ≥ 200 kHz
Electrical connection Version S: standard cable outlet
Version C: detachable cable outlet
Supply voltage DC 5 V
DC 10…30 V
Current consumption Max 200 mA

 

Accessories

Downloads

Product Catalog
Encoder Selection Guide 2025
AK90H Absolute Angle Encoder Datasheet
AK90H Absolute Angle Encoder Manual

Order code

AK90H – X1 – X2 – X3 – X4 – X5 – X6 – X7 / X8
Output Signal Version (X1) Bit Number (X2) Shaft Coupling (X3) Shaft Diameter (X4) Power Supply (X5) Cable or Connector Outlet (X6) Cable Length (X7) Connector Type (X8)
S – SSI (binary)
B – BiSS C		 B1 – 1
…-…
B26 – 26		 H – type H (coupling with ring nut)
P – type P (coupling with clamp)		 20 – 20 mm
22 – 22 mm (only for type P)		 05V – DC 5V
30V – DC 10…30V		 S – version S (standard cable outlet)
C – version C (detachable connector outlet)		 AR01 – 1 m
AR02 – 2 m
AR03 – 3 m		 W – without connector
D9 – flat, 9 pins
B12 – round, 12 pins
D15 – flat, 15 pins
C17T- round, 17 pins

 

Order form

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