Explaining Production on Instagram: "Think these are just giant metal chains? Think again. 🚜⛓️​To the naked eye, excavator or bulldozer tracks look like simple hardware. In reality, they are a masterpiece of high-stress engineering designed to carry 100-ton machines over jagged rocks without snapping. 🏔️🏗️​Here is how these "metal muscles" survive the extreme:​The Sealed & Lubricated System (SALT): Inside every link is a pin and a bushing. High-end tracks are filled with oil and sealed with s