Mitutoyo 539-209-30 AT113 Linear Scale 500mm Glass

Product Description

The MITUTOYO 539-209-30 is a glass linear encoder scale from the AT113 series, designed for high-precision linear position measurement in machine tool and metrology applications. The scale delivers a resolution range of 0.001 inches down to 0.000005 inches (0.01 to 0.0001 mm), with a maximum measuring range of 21.26 inches (500 mm). The overall scale body length is 20 inches (696 mm total mounted length). Accuracy is rated at 0.0004 inches, making it suitable for applications where tight positional tolerances are required. Installation is performed by qualified metrology or CNC machine service technicians.

The AT113 series glass linear scale is used in CNC machining centers, grinding machines, milling machines, lathes, and coordinate measuring equipment where precise axis feedback is essential. It is appropriate for both light industrial and precision manufacturing environments. The scale carries an IP53 ingress protection rating, providing resistance to dust and low-pressure water spray, making it viable in typical shop-floor conditions. The 9.84-inch (3.00-meter) cable provides sufficient reach for most standard machine configurations.

Key Features

• Glass scale construction for stable, low-thermal-expansion linear measurement
• Resolution range from 0.001 inches down to 0.000005 inches (0.01 to 0.0001 mm)
• Maximum measuring range of 21.26 inches (500 mm)
• Accuracy rating of 0.0004 inches
• IP53 rated for dust and splash resistance in shop environments
• Operating temperature range of 0 to 45 degrees C with storage rated to -20 to 70 degrees C
• 3.00-meter (9.84-inch) integrated cable for flexible installation routing

Compatibility

Designed as an OEM-style replacement or upgrade linear scale for machine tools and metrology equipment compatible with AT113 series glass encoder scales requiring a 500 mm measuring range and standard encoder interface.

Installation Notes

Installation should be performed by a qualified CNC service technician or metrology equipment specialist. Power down and de-energize all machine axes before mounting or demounting the scale. Proper alignment of the read head to the scale body is critical — follow the machine or DRO manufacturer mounting tolerances. Avoid bending or stressing the cable at the connector junction during routing.