Nemicon – Magnetic Encoder 18SA

Shaft type Magnetic (Outer Diameter φ18mm)

Brand : Nemicon

The Nemicon 18SA Series is a compact magnetic rotary encoder designed to provide high accuracy position and motion feedback in small automation systems. With an outer diameter of 18 mm and a shaft type configuration, the encoder integrates magnetic sensing technology to deliver stable signal output even in environments where dust, vibration, or temperature variations may affect optical encoders. Its compact design makes it suitable for installation in servo motors, robotic mechanisms, and other space limited motion control applications.

The 18SA encoder supports both incremental and absolute output capabilities, offering flexible integration for various control systems. It can provide incremental signals such as ABI along with UVW commutation signals for motor control, while the absolute version supports up to 18 bit resolution with SSI communication options. This versatility allows the encoder to be used in precise motor positioning, speed monitoring, and advanced motion control applications where reliable feedback is required.

For more info, download our full technical spec.

Specifications

Parameter Specification
Encoder Type Magnetic Rotary Encoder (Incremental / Absolute)
Outer Diameter 18 mm
Shaft Diameter 2.5 mm Solid Shaft
Incremental Resolution 1 to 10000 pulses per revolution (P/R)
Absolute Resolution 10 to 18 bit
Output Signals ABI Incremental, UVW Commutation
Communication Interface SSI or SPI (Absolute Output)
Power Supply DC 4.5 to 5.5 V
Current Consumption 40 mA max (no load)
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 IP40
Weight 20 g max

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