Sony GB-220A Electromagnetic Scale 91.3 Inch

Product Description

The SONY GB-220A is a high-resolution electromagnetic scale designed for precision linear measurement in machine tool, metrology, and industrial automation applications. Operating on electromagnetic sensing technology, it delivers a resolution of 0.00002 inches, making it suitable for applications where tight dimensional tolerances are critical. The scale spans 91.3 inches in length and carries a stated accuracy of 5 micrometers. Mechanical engineers, metrology technicians, and CNC machine builders are the primary installers and integrators of this type of linear feedback device.

The GB-220A is suited for integration into large-format machine tool setups, coordinate measuring systems, and precision grinding or milling equipment where a long-travel linear scale with fine resolution is required. Its electromagnetic design provides reliable position feedback over the full 91.3-inch travel range, accommodating large workpiece measurement or long-axis machine slides in both production and inspection environments.

Key Features

• 0.00002 inch resolution supports tight tolerance measurement across the full scale length
• 91.3 inch scale length covers large-format machine axes and inspection surfaces
• 5 micrometer accuracy rating for demanding metrology and machine tool applications
• Electromagnetic sensing technology for stable, contact-free linear position feedback

Compatibility

Designed as an OEM-style linear scale for integration into precision machine tools, CNC systems, and metrology equipment requiring electromagnetic linear feedback over a long travel range.

Installation Notes

Installation is typically performed by a metrology technician or CNC machine integrator familiar with linear encoder mounting and signal wiring. Power down all machine axes and disconnect the control system before mounting or wiring the scale. Proper alignment of the read head to the scale body is critical to achieving rated accuracy — follow the manufacturer alignment specifications during installation. Signal cable routing should avoid high-voltage lines and servo drive cables to minimize electrical interference.