Magnescale BL57 Linear Laserscale

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High‑Speed, High‑Accuracy Linear Encoder for Advanced Motion Control

The BL57 is a high-performance linear Laserscale designed for applications requiring both ultra‑precise positioning and high‑speed motion control.

Combining advanced laser interferometric measurement with robust system design, the BL57 delivers exceptional accuracy, stability, and flexibility for precision motion systems and metrology applications.

Key Features

High resolution measurement – Achieves resolutions down to picometre levels for fine positioning control
High response speed – Supports speeds up to 3 m/s, making it ideal for dynamic systems
Wide measuring range – Available up to 1,060 mm, supporting long-axis applications
Outstanding stability – Measurement is largely unaffected by temperature, humidity, and air disturbances
Non‑contact operation – Eliminates wear and maintains long-term accuracy

BL57-RE Laserscale encoder head mounted to a metal rail with a cable attached.

Block diagram: Scale control feeding two amplifiers; analogue amp to Analogue 1Vp-p output, and A/B phase amp to A/B phase.

How it works

The BL57 uses Magnescale’s laser interferometric principle with a diffraction grating scale to generate a high-quality measurement signal.

Signal pitch of 400 nm enables reliable, high-speed measurement
Combined with interpolators (e.g. BD700), the system achieves extremely fine resolution
Non-contact detection ensures excellent repeatability and long-term performance