Automation and Linear Motion Coatings

Not significantly. Armoloy Thin Dense Chrome (TDC) is engineered for precision applications and is applied in ultra-thin layers — generally between 0.0001″ and 0.0005″ per side. This minimal thickness allows components to retain critical dimensional tolerances, making TDC highly compatible with linear motion systems including bearings, guideways, and ball screws where clearance, alignment, and consistent movement are essential.

Thanks to its uniform deposition, TDC can usually be integrated into existing part geometries without requiring dimensional changes or adjustments to mating parts. This makes it a smart solution for high-precision systems in automation, robotics, and other motion-critical environments that demand both accuracy and durability.

Absolutely. Protective finishes like Armoloy Thin Dense Chrome (TDC) and electroless nickel are widely applied to linear motion components — including actuator rails, linear bearings, and ball screws — to safeguard against corrosion caused by humidity, chemical exposure, and cleaning processes.

These coatings form a dense, non-permeable layer that prevents rust and pitting corrosion, helping maintain performance and extend service life even in aggressive environments. This added protection is crucial in settings like food production, packaging lines, and outdoor automation, where untreated metal surfaces would otherwise corrode rapidly.

Several coatings are frequently used to enhance the performance and longevity of linear motion systems. Thin Dense Chrome (TDC) is a top choice for its superior hardness, low coefficient of friction, and outstanding wear resistance. Electroless nickel is also widely applied for its ability to deliver uniform corrosion protection across complex geometries.

In applications where lubrication is limited or cleanliness is critical, fluoropolymer coatings like PTFE are often selected for their exceptional lubricity, helping minimize friction and reduce maintenance demands. Each of these coatings supports smooth, reliable motion in demanding environments — from precision automation to harsh industrial settings.