58mm Absolute Encoders

The InTrack-EN58 absolute rotary encoders with SSI or BiSS interface and inductive resonant target sensor technology achieve a resolution of 18 bits for a single turn and up to 16 bits for a multiturn. With this standard size of 58 mm, the Cambridge Encoders offer a synchro flange, a clamping flange, a square flange and a blind hole shaft up to 14 mm. Zero Setting input and Counting Direction input are available with either M12, 8-pin or a radial cable connection.
Traditional 58mm absolute encoder
High precision. Accuracy specification comparable with the best optical encoders
Provides reliable position feedback in the presence of strong magnetic fields and under the risk of internal condensation. Ceramic balls in hybrid bearings act as galvanic separators and thermal decouplers. They reliably eliminate corrosion and wear of the bearings caused by shaft currents. Temperature range from -40°C to +90°C, tight and resistant in daily use with IP67 protection for the housing side. The unique bearingless option offers the best environmental protection and the longest service life.

Technical data


Voltage supply

4.75…30 VDC

Reverse polarity protection

Yes, including any wiring faults

Short-circuit proof


Consumption w/o load

≤90 mA (5 VDC)

Power consumption

typ. 0.5 W


SSI 32 bit (multiturn)
SSI 24, 25, or 26 bit (singleturn)
UART 921,600/8-N-1



Steps per revolution

18 bit (5″)

Number of revolutions

12 bit (SSI)
16 bit (BISS)

Absolute accuracy

±0.01 ° (40″)

Repeat accuracy

±0.003 ° (10″)

Sensing method

Inductive, resonant target

Input signals

SSI/BISS clock
Zero setting input
Counting direction

Output stage


Output signals


Clock frequency

2 MHz (SSI)
10 MHz (BISS)

SSI configuration

Parity bit
Error bit
Output code: Gray or Binary

SSI Multipath transmission


Internal cycle time

20 µs

Fixed latency

40 µs, synced to SSI/BISS requests

Group delay

50 µs

Cyclical scanning

up to 20kHz

Interference immunity

EN 61000-6-2



Ø 58 mm

Flange type

Synchro flange
Clamping flange
Square flange
Bearingless option

Shaft type

10 mm hollow shaft, blind hole
12 mm hollow shaft, blind hole
14 mm hollow shaft, blind hole

Insertion depth max

22 mm 

Working temperature

-40 °C … +90 °C

Bearings type

Ceramic Hybrid Bearings

Protection level

IP 54 (flange side)
IP 67  (housing side)


Radial cable
M12, 8-pin

Max. rotational speed

10,000 rpm mechanical
24,000 rpm electrical limit


Housing: aluminium
Shaft: stainless steel

Weight approx.

300 g