Category: Magnescale Rotary & Angular Encoders

Magnescale RU74 Incremental Rotary Encoder

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Compact Incremental Rotary Encoder for High‑Speed Motion Control

The RU74 is a compact, enclosed incremental rotary encoder designed for high‑speed angular feedback in CNC machines and industrial automation systems. Provides A/B quadrature + reference signal (EIA‑422) for fast motion control 

Using a magnetic sensing principle and robust enclosed construction, the RU74 provides reliable, high‑speed position feedback in demanding industrial environments. 

Key features

  • High‑accuracy angular feedback – Delivers accuracy of ±2.5 arcseconds for precise position monitoring 
  • Incremental high‑speed output – Provides A/B quadrature + reference signal (EIA‑422) for fast motion control 
  • Optimised for dynamic applications – Designed for high‑speed response up to 2,000 rpm (depending on settings) 
  • Compact, space‑saving design – Slim form factor (approx. 42 mm thickness) enables installation in tight spaces 
  • Reliable in harsh environments – Magnetic sensing allows operation in oil, coolant and contamination 
  • Flexible installation – Internal coupling accommodates alignment variation and simplifies mounting
RU77 Rotary Encoder Magnescale
RU74 Rotary Encoder Magnescale configuration
Diagram of a sensor cable assembly showing a left device connected via a straight cable to a right connector, labeled A/B phase and CE28 cable, with a circular junction and a small right-hand connector. It notes a 1 m segment (up to 9 m) on the left, a 1 to 14 m segment on the right, a total length up to 15 m, and a plus sign between segments.

How it works

The RU74 is an incremental magnetic rotary encoder:

  • Outputs A/B quadrature signals for position and speed tracking
  • Reference (index) signal enables position referencing
  • Built‑in interpolation improves resolution and signal quality

This results in:

  • High‑speed motion feedback
  • Smooth control of rotary axes
  • Reliable performance in industrial environments

Compatible Systems

The RU74 is designed for integration with:

  • CNC controllers and motion systems using A/B quadrature inputs
  • General motion control platforms requiring incremental feedback

Typical applications

  • CNC rotary axes and spindles
  • High‑speed indexing systems
  • Servo motor feedback
  • Automation and motion control systems
  • Applications requiring fast response and incremental tracking

Why choose the RU74

  • Ideal for high‑speed incremental feedback applications
  • Simple integration with standard motion control systems
  • Designed for harsh industrial environments
  • Cost‑effective solution for dynamic motion systems

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