Nemicon – Small Hollow Shaft Encoder 38H

Small Hollow Shaft Encoder (Outer Diameter φ38mm)

Brand : Nemicon

The Nemicon 38H Series is a compact hollow shaft incremental rotary encoder designed to provide accurate motion feedback for industrial automation and drive systems where direct shaft coupling is required. Its 38 mm outer diameter and hollow shaft construction allow the encoder to be fitted directly onto a motor or machine shaft, simplifying installation and reducing mechanical interface components. The design delivers stable signal output for precise detection of rotational movement, making it suitable for automation equipment, conveyors, packaging machinery, and precision motor applications.

The 38H encoder supports a range of resolution options to match different motion control requirements and provides A, B, and Z phase outputs for position, speed, and direction feedback. With selectable output types such as open collector and line driver, the encoder can be matched to various controllers, PLCs, and drive systems. Its robust design and reliable electrical performance help ensure dependable feedback even at high rotational speeds, contributing to improved control accuracy and system responsiveness.

For more info, download our full technical spec.

Specifications

Parameter Specification
Encoder Type Incremental Rotary Encoder
Encoder Design Small Hollow Shaft Type
Outer Diameter 38 mm
Hollow Shaft Diameter 6 mm to 10 mm depending on model
Resolution 100 to 5000 pulses per revolution (P/R)
Output Signals A, B, Z Phase
Output Type Open Collector or Line Driver
Power Supply DC 4.5 to 13.2 V depending on output type
Maximum Response Frequency 300 kHz max depending on resolution
Maximum Permissible Speed 6000 rpm
Operating Temperature -10°C to +85°C
Storage Temperature -30°C to +85°C
Humidity 85% RH max without condensation
Protection Rating IP50
Weight Approx. 100 g without cable

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