HD25 Incremental



  • One-or two-channel versions
  • Optional adaptive line driver
  • ATEX- certification for intrinsically safe devices
  • High-resolution, unbreakable code disc
  • Standard industrial plugs
  • Ingress protection NEMA 4X, IP67
  • Available with housing made of nickel or stainless steel
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  • Hengstler GmbH
    Uhlandstr. 49
    78554 Aldingen
  • Tel. +49 / 7424 - 89 -286
  • Support request


Product FamilyHD25
Ordering InformationRotaryEncoderHD25
Fuction / ApplicationIncremental
  • CE
  • ATEX
  • CSA


Housing Diameter [mm]67 mm
Solid- / Hollow ShaftSolid 10 ... 12 mm
Protection Rating HousingIP67
Operating Temperatur [°C]-40 ... +100 °C
Housing Option
  • Stainless Steel
  • Nickel Finish
  • powder coated aluminium
Increased Environmental Requirements
  • High mechanical robustness
  • Ex atmosphere
  • CSA approval
  • Cable
  • M12-connector
  • MS-connector


Revolutions [rpm]6.000 rpm
Number of Pulses1 ... 5000
  • Differential Line Driver
  • Open Collector NPN
  • Push-pull

The optical HD25 incremental rotary encoder is a unit for high demands that exceeds the requirements of IP66/IP67 and NEMA 6. Available with stainless steel housings, these rotary encoders are ideal for tough ambient conditions that require excellent resistance to high-pressure cleaners and corrosive chemicals. Large-sized bearings are designed to withstand high axial and radial forces up to 440 N. The HD25 series of rotary encoders also includes intrinsically safe ATEX variants for use in potentially explosive atmospheres.