Category: Linear, Magnescale DRO & Linear Measurement

Magnescale SJ700A Magnetic Linear Scale (5µm)

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Prices starting from: £374.00

Typical pricing varies by model, please contact us for a quote.

The Magnescale SJ700A is a cost-effective, high-performance linear magnetic scale designed for digital readout (DRO) systems. Built with Magnescale’s proven magnetic sensing technology, the SJ700A offers excellent resistance to workshop conditions, making it ideal for retrofitting machine tools and integrating into new CNC systems. Its semi-modular design and integrated detector simplify installation and ensure long-term reliability.

The SJ700A is engineered to perform in harsh industrial settings. Its magnetic detection system is inherently resistant to oil, coolant, dust, and vibration—common challenges in machining environments. With a resolution of 5 μm and measuring lengths ranging from 150 mm to 1,600 mm, the SJ700A delivers consistent, accurate feedback for a wide range of machine tool applications.

Product Availability

The Magnescale SJ700A has been discontinued by the manufacturer and is only available while existing stocks remain. Please contact us for current availability or to discuss suitable replacement options. The SJ700A remains a popular choice for machine tool retrofits and maintenance projects due to its proven reliability and excellent resistance to workshop conditions.

Key features

  • Magnetic Non-Contact Detection – Reliable performance in oily, dusty, and high-vibration environments.
  • 5 μm Resolution – Suitable for general-purpose machining and DRO applications.
  • Measuring Lengths – Available from 150 mm to 1,600 mm.
  • Semi-Modular Design – Detector integrated into the scale for simplified installation.
  • Thermal Compatibility – Same coefficient of expansion as machine tools for stable measurements.
  • Cost-Effective – Ideal for retrofitting older machines or equipping new systems.
  • Plug-and-Play with Magnescale Counters – Compatible with LG20, LH70 series.
  • Durable Construction – Built to withstand workshop conditions.
  • Slide Holder Alignment – Ensures secure and accurate positioning.
  • Compact Profile – Fits easily into tight machine spaces.
Magnescale SJ700A Series
Magnescale DRO cover
Magnescale Digital Readout

Semi-Modular Design for Easy Integration

This scale features a semi-modular structure with the detector built directly into the scale body. The relative positions of the scale and head are pre-aligned and secured using a slide holder, reducing installation complexity. The SJ700A can be connected directly to Magnescale counters such as the LG20 or LH70 series, enabling fast setup and seamless operation.

Thermal Stability and Mechanical Compatibility

The SJ700A is designed with the same coefficient of thermal expansion as machine tools, ensuring measurement stability even under fluctuating temperatures. This makes it particularly suitable for precision machining environments where thermal drift can affect accuracy.

Ideal for Retrofitting and OEM Applications

Whether you’re upgrading an older machine or designing a new system, the SJ700A offers a robust, economical solution for linear position feedback. Its rugged construction and straightforward installation process make it a favourite among machine builders and maintenance engineers alike.

Applications

  • CNC lathes and milling machines
  • Manual machine tool retrofits
  • Digital readout (DRO) systems
  • Metal cutting and forming equipment
  • General-purpose industrial automation

Is the Magnescale SJ700A discontinued?

Yes. The SJ700A has been discontinued by the manufacturer and is only available while existing stock remains. Please contact us to check availability or discuss replacement options.


What can replace the SJ700A?

Depending on the application, alternatives may include the Magnescale GB-ER for higher-accuracy applications or the SL110/SL130 and PL20C combination for longer measuring lengths. The most suitable replacement depends on the machine, measuring length and accuracy requirements. 


Can I still buy an SJ700A?

Yes, subject to stock availability. As the product is discontinued, availability may be limited for certain measuring lengths.

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