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The THOMSON INDUSTRIES 511H20A0 is a standard ball carriage designed for linear motion applications. It rides along a linear shaft or rail and provides smooth, low-friction travel for machinery, automation equipment, and industrial positioning systems. The carriage measures 71.5mm (approximately 2.81 inches) in length, 63mm (approximately 2.48 inches) in width, and 25.5mm (approximately 1.00 inch) in height. Constructed from steel, it offers durable load-bearing performance in demanding environments. Transverse hole spacing is 40mm (approximately 1.57 inches) and lateral hole spacing is 53mm (approximately 2.09 inches), allowing straightforward mounting to standard fixture plates and sub-assemblies.
This carriage is suited for use in industrial automation, CNC equipment, material handling, and precision positioning systems where consistent linear travel is required. It is part of the Thomson 500 Series and is typically installed by mechanical engineers, industrial maintenance technicians, or automation integrators. The 21.5mm (approximately 0.85 inch) overhang and M6 mounting holes support integration into a wide range of machine frames and linear guide assemblies. The 30-inch high assembly designation indicates the rail length compatibility for which this carriage is specified.
Designed as a standard ball carriage replacement or new-installation component for Thomson 500 Series linear shaft assemblies with a 30-inch high assembly rail specification.
Installation is typically performed by qualified mechanical or automation technicians. De-energize and lock out all power to the machine before disassembling any linear motion components. Use calibrated metric fasteners with the M6 hole pattern and verify hole spacing alignment before final torque. Consult the Thomson 500 Series assembly documentation for lubrication intervals and preload requirements specific to the application.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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