Ø87mm absolute encoder


The AK87HE1 is a singleturn absolute encoder with a hollow through shaft and up to 24 Bit SSI or BiSS-C interface.

Mechanical data

Maximum shaft speed 4000 rpm
Permissible axial motion of measured shaft ± 1.5 mm
Permissible radial runout of measured shaft ± 0.02 mm
Starting torque at 20°C < 0.01 Nm
Rotor moment of inertia < 20 x10-6 gcm²
Protection (IEC 529) IP64
Maximum weight without cable 0.55 kg
Operating temperature  -40…+100°C
Storage temperature  -40…+100°C
Maximum humidity (non-condensing) 98%
Permissible vibration (55 to 2000 Hz) ≤ 100 m/s²
Permissible shock (11 ms) ≤ 1000 m/s²

Electrical data

Resolution 9…24 bit
Output code Gray, Binary
Data interface Serial SSI, Serial BiSS C
Light source LED
Accuracy ± 20 arc.sec
Supply Voltage 5 V ± 5 %
Cutoff frequency < 240 kHz
Incremental signals ~ 1Vpp (1024 PPR)
Cable length (standard) 1 m
Maximum cable length 25 m


Order form

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