Home » Optical Grating Ruler Sensor 0.005mm for Lathe Milling DRO Display KA300

Optical Grating Ruler Sensor 0.005mm for Lathe Milling DRO Display KA300

SKU: 1005003772493630-KA-300-1020mm-CHINA
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€144,14
-33% €216,21 €144,14

Upgrade your machining workflow with the Optical Grating Ruler Sensor KA-300, a precision DRO sensor designed for mills, lathes, grinders, and CNC applications. Featuring a 0.005 mm (5 μm) resolution and a robust 5V TTL interface, this sensor delivers reliable, high-accuracy position feedback across a wide range of tool setups. The KA-300 uses a 45-degree oblique grating for superior signal reception, reducing readhead wear and increasing longevity compared with traditional 90-degree scales. Built with a closed, water-resistant grating sensor and a multi-layer insulated signal line, it provides solid performance in demanding shop environments while staying compact enough to fit in tight machine configurations.

Designed for durability and accuracy, the KA-300 offers IP54 protection and a five-bearing readhead system, delivering stable readings even in vibration-prone environments. It operates from a 5V DC supply and uses a DB9 interface to connect with most DRO displays. With an available travel range of 70 mm to 1020 mm and an overall scale length of Travel+106 mm, it is versatile enough for a wide variety of milling, turning, and grinding setups. The assembly is suitable for use on Chinese DRO systems and is compatible with many DRO matches, while delivering a fast measurement speed of up to 60 m/min. As a product from SINOC with NSK components, you can count on reliability and longevity in everyday workshop use.

All electronic and mechanical equipment sold to EU countries by InterCyprus is CE certified and carries a two year warranty, and the KA-300 itself comes with a one-year warranty to cover manufacturing defects and performance. For peace of mind, you’ll benefit from a design that minimizes friction and wear, extending the life of the scale and readhead in busy shop environments.

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Benefits & Tips

  • Achieve precise machine positioning with 0.005 mm resolution, improving part tolerances and repeatability on mills, lathes, grinders, and CNC machines.
  • Rugged design and IP54 protection help maintain accuracy in workshop conditions, with reduced wear thanks to the 45-degree grating and multi-bearing readhead.
  • Keep readings stable by staying within the specified operating temperature (0–50°C) and maximum measuring speed (up to 60 m/min); use shielded DB9 cabling to minimize interference.

Product specifications

  • Application: Mill, Lathe, Grinder, CNC, etc.
  • Brand: SINOC
  • Model Number: KA-300
  • Resolution: 5 μm / 0.005 mm
  • Available travel length: 70 mm – 1020 mm
  • Scale overall length: Travel + 106 mm
  • Cross Section: 25 mm × 34 mm
  • Input voltage: 5V DC
  • Interface Type: DB9
  • Output mode: TTL
  • Protection grade: IP54
  • Operating temperature: 0–50 °C
  • Cable length: 3 m
  • Certification: CE
  • Max measuring speed: 60 m/min
  • Origin: Mainland China
  • Procut name: DRO linear scale
  • Warranty: 1 year
  • Notes: Installation holes distance listed as Travel+90 mm; KA-300 is compatible with a wide range of DROs
  • Special features: NSK components, five-bearing readhead system, closed-type grating sensor, multilayer insulation on signal cable

Package includes:

  • KA-300 optical grating ruler sensor
  • 3 m cable

Warnings / Reminders

  • Operate within the specified temperature range of 0–50 °C for best accuracy.
  • Do not exceed the maximum measuring speed of 60 m/min to protect the readhead and grating.
  • Keep connections shielded from intense EMI sources and moisture; IP54 provides protection but not immersion.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.