Hengstler HSD38 Incremental Encoders

Hengstler HSD38 Incremental Encoders hollow-shaft rotary encoder for extremely tough tasks in industrial applications can accept shaft diameters of up to 1″ (25.4 mm). It works reliably in a temperature range from -40° to +100°C, and is suitable for use in the chemicals, food-processing, oil and gas, paper and steel industries.

NorthStar’s HSD38 Extreme Duty Industrial Hollow shaft Encoder accepts up to 1″ (25,4 mm) diameter shafts and operates reliably from -40 to +100°C. Its Hard Anodized finish enclosure exceeds IP66/IP67 and NEMA 6 enclosure requirements.

This robust encoder features a double-sealed housing that allows application where regulatory washdown and high pressure steam or caustic chemicals are present. Utilization of an advanced Opto ASIC with innovative packaging techniques enables the encoder to operate in high shock and vibration environments.

Hengstler HSD38 Incremental Encoders Features

  • Double-Sealed Housing
  • High Resolution Unbreakable Disk
  • Electrically and Thermally Isolated
  • Industrial Duty Connector
  • NEMA 4X, 6 / IP66 or IP67 Rated
  • Rugged Cast-Aluminum Housing


The HSD38 extreme duty encoder features simple installation on motor or machine shafts. It is often mounted on the back of motors where encoder feedback is needed in harsh environment applications. It is ideal for use in environments that demand heavy washdown protection.

  • Converting Machinery
  • Material Handling
  • Packaging Equipment
  • Processing Equipment


Chemical, Food & Beverage, Paper, Steel and any other where a precise encoder is needed to operate in harsh environments.

Hengstler HSD38 Incremental Encoders Specification

Product Family HSD38
Ordering Information Rotary Encoder HSD38
Function / Application Incremental
Technology Optical
Approval CE
Housing Diameter [mm] 96,5 mm
Solid- / Hollow Shaft Hollow 12 … 20 mm
Protection Rating Housing IP67
Operating Temperature [°C] -40 … +100 °C
Housing Option powder coated alumunium
Increased Environmental Requirements High mechanical robustness
Connection Cable
Revolutions [rpm] 5.000 rpm
Number of Pulses 15 … 5000
Interface Differential Line Driver
Open Collector NPN

Download Data Sheet: Incremental Encoders HSD38

Ref: hengstler.de

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