Nemicon – Heavy Duty Encoder HEF

Small Shaft Heavy Duty Encoder (Outer Diameter φ39mm)

Brand : Nemicon

The Nemicon HEF Series is a heavy duty hollow shaft incremental rotary encoder designed for reliable motion feedback in harsh industrial environments. With a compact outer diameter of approximately 39 mm and an IP65 protection rating, the encoder is engineered to withstand dust, vibration, and moisture while maintaining stable signal performance. Its hollow shaft structure allows direct mounting onto machine or motor shafts, simplifying installation and reducing the need for additional mechanical couplings.

The HEF encoder supports a wide range of resolutions from around 100 to 3600 pulses per revolution, enabling accurate detection of position, speed, and direction for various automation applications. It provides selectable output types such as voltage output, open collector, push pull, and line driver, allowing flexible integration with PLCs, motion controllers, and industrial drive systems. The combination of durable construction and stable electrical output makes the HEF series suitable for packaging machines, conveyors, industrial motors, and other heavy duty automation equipment.

For more info, download our full technical spec.

Specifications

Parameter Specification
Encoder Type Incremental Rotary Encoder
Encoder Design Heavy Duty Hollow Shaft Type
Outer Diameter 39 mm
Hollow Shaft Diameter Approx. 5 mm to 9.525 mm depending on model
Resolution 100 to 3600 pulses per revolution (P/R)
Output Signals A, B Phase with optional Z Index
Output Modes Voltage Output, Open Collector, High Voltage Open Collector, Push Pull, Line Driver
Power Supply DC 4.5 to 13.2 V / DC 10.8 to 26.4 V / DC 4.75 to 5.25 V depending on model
Maximum Response Frequency Up to 200 kHz depending on configuration
Maximum Permissible Speed Approx. 5000 rpm
Operating Temperature -10°C to +70°C
Storage Temperature -30°C to +80°C
Protection Rating IP65
Humidity 85% RH max without condensation
Weight Approx. 300 g

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