Ø42mm absolute encoder reading head


The AR42 is a compact design incremental modular rotary encoder which is particularly suitable for applications with limited installation space. The absence of integral bearings eliminates initial starting torque. Setup LED allows easy mechanical adjustment.

Mechanical data

Maximum shaft speed 2000 rpm
Protection (IEC 529) IP00
Maximum weight without cable < 0.01 kg (without cable)
< 0.002 kg
Operating temperature  -40…+105°C
Storage temperature  -54…+105°C
Maximum humidity (non-condensing) 98%

Electrical data

Accuracy < ± 10″
Output code Binary
Data interface Serial BiSS C
Supply voltage 5 V ± 5 %
Supply current 80 – 260 mA
Start up time 13 ms
Resolution  (default) 11 bit (2048 ppr / 8192 cpr)
Resolution (optional) any number from 1 to 11796480 (max 184320 at 3000 rpm)


Order code

AR42 – X1 – X2 – X3

Adjustment (X1) Adjustment (X2) Adjustment (X3)
This is just an example of a specific tailor-made encoder kit, but there can be numerous variations with different interfaces, mechanical, electrical adjustments, etc. The client would have to cover the non-recurring engineering (NRE) cost for designing and manufacturing the encoder kit depending on the complexity of adjustments needed for the application.

Note: Please consult beforehand to confirm specific adjustments and capabilities.

Order form

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