Versatile applications - Household and interior use: sliding doors, wardrobes, and curtains. - Industrial automation and rails: pulley components for automation devices and pulleys for machine rails. - Structural/door applications: suitable for large iron doors. Key benefits - Smooth, quiet operation: high-quality bearing steel with low noise rolling; embedded SUS420 stainless steel bearing provides low resistance and precise movement. - High wear resistance and load capacity: strong hardness and wear resistance support long service life and reliable performance. - Precision and reliability: tight machining, coordinated performance, and consistent behavior under load. Materials and construction - Bearing assembly: high-grade bearing steel with an embedded SUS420 stainless steel bearing; weight 1256 kilograms. - Core steel: high-hardness steel with medium carbon content; tight forging process. - Finish: smooth surface treatment without burrs and even load distribution for a clean, durable finish. Notes - Designed to deliver dependable operation across household and industrial scenarios, with a focus on function, compatibility, and durable performance without unnecessary embellishment.