Optical Linear Encoders: Absolute Positioning Precision for Your Machine Tools

In modern metalworking, every micron counts. The wear of ballscrews, thermal expansion of metal, and bed backlash make accurate blind positioning of tools impossible. To ensure 100% control over the movement of machine tool components, optical linear encoders (optical scales) are used.

In the « Dniprovskyi Electrotechnical Plant » online store, you can buy high-precision linear encoders for equipping CNC machines, DRO (Digital Readout) systems, and measuring stands. We offer reliable sensors that operate flawlessly even in aggressive industrial environments.

How Does a Linear Displacement Sensor Work?

An optical encoder consists of a rigid aluminum profile containing a high-precision glass scale with etched grating, and a reading head. As the carriage or table moves, the reading head glides along the scale, and a photoelectric sensor detects changes in the light beam. These changes are converted into a digital signal (usually TTL or RS422), which is transmitted with micron accuracy to the DRO display or CNC controller.

Advantages and Applications of Optical Scales

Unlike magnetic counterparts, optical systems provide unmatched stability and measurement accuracy. They are widely installed on:

• Lathes, milling, and boring machines (for X, Y, Z axes);
• Cylindrical and surface grinding equipment;
• Electrical Discharge Machines (EDM);
• Coordinate Measuring Machines (CMM) and microscopes.

Key advantages of our encoders:

• High resolution: standard models have a resolution of 5 µm or 1 µm, which covers 99% of tasks in mechanical engineering.
• Reliable protection: the scale housing is equipped with elastic polyurethane lips. They reliably protect the optical glass from the ingress of metal chips, dust, and coolant.
• Durability: the use of high-quality bearings in the reading carriage ensures smooth movement and minimal component wear.

Why Order Optical Encoders from « Dniprovskyi Electrotechnical Plant »?

Correctly selecting a scale is critical: you must accurately calculate not only the overall length of the sensor but also its effective travel length. Our engineers will help you avoid mistakes:

1. We will consult you for free and select scales of the exact length required for your specific machine model.
2. We keep a wide range of sizes in stock — from short sensors (50 mm) to long scales (over 1000 mm).
3. We guarantee high-quality optics and full compatibility with popular DRO units.

Upgrade your equipment's precision class and reduce your scrap rate to zero! Leave a request on our website, and we will promptly select the optimal set of linear encoders for you, with delivery throughout Ukraine.