RI58-G Hengstler Incremental Encoder

The RI58-G Hengstler Incremental Encoder can easily mount onto a rotating drive shaft and secured using a clamping ring.

The flange of the encoder is not fixed rigidly to a surface. A cylindrical pin, also known as a stator coupling, prevents rotation of the encoder housing and compensates for axial and radial shaft misalignment without adversely affecting the encoder’s accuracy.Shaft designs include a hollow shaft with a front or rear mounting ring with resolutions of up to 5,000 pulses. Bore diameter sizes of 14mm and 15mm and shaft protection class ratings of up to IP64 are possible. Cable outlets are radial only; the standard cable length is 1.5 metres, producing the RI58-G encoder with longer cable lengths and connectors is possible.

The supply voltage is 5V or 10 to 30V DC. Output signals are push-pull with or without complementary signals or RS422 with an optional alarm or sense function.Encoders are RoHS-compliant, UL-approved, and CE-marked.

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  • Direct mounting without coupling
  • Through hollow shaft Ø 14 mm and 15 mm
  • Easy installation by means of clamping ring
  • Fixing of flange by means of a stator coupling or set screw
  • Applications: actuators, motors




Housing diameter 58 mm
Shaft diameter 14 mm / 15 mm (Through hollow shaft)

(Mounting of housing)

Synchro flange
Mounting of shaft Front clamping ring, Rear clamping ring, Center bolt
Protection class shaft input (EN 60529) IP64
Protection class housing (EN 60529) IP64
Shaft tolerance Ø 14/ 15 mm, tolerance g8
Max. speed max. 4.000 U/min
Starting torque typ. ≤ 2 Ncm
Moment of inertia approx. 60 gcm²
Vibration resistance (DIN EN 60068-2-6) 10 g = 100 m/s² (10 … 2000 Hz)
Shock resistance (DIN EN 60068-2-27) 100 g = 1000 m/s² (6 ms)
Operating temperature RI58-G: -10 °C … +70 °C

RI58TG: -40 °C … +100 °C

RI58CG: -40 °C … +70 °

Storage temperature -25 °C … +85 °C
Material housing Aluminum
Weight approx. 210 g
Connection cable, radial