40x80x21 Bearing Guide: Types, Specs & Sourcing

The phrase "40x80x21" refers to a specific industrial dimension (40mm inner diameter x 80mm outer diameter x 21mm width) predominantly used in the bearing and sealing industry. It is a critical component in automotive drivetrains, industrial machinery, and agricultural equipment. Bearingbasement Bearingbasement

Market Trends & Applications

* Automotive Drivetrains: This dimension is standard for transmission shaft bearings, particularly in Volkswagen and Audi 6-speed gearboxes (02M/02Q). Trends show a demand for high-performance tapered roller versions that can handle combined radial and axial loads in high-speed environments. Ecstuning Bearingbasement

* Agricultural Machinery: Variants like the SKF YET208 (Insert Bearing) are widely used in mowers, balers, and grain storage systems. The market is shifting toward "Self-Lube" and maintenance-free units with eccentric locking collars for easier installation in high-vibration settings. Facebook Bearingbasement Bearingbasement

* Industrial Precision: High-precision deep groove ball bearings of this size are increasingly used in printing machinery (e.g., Heidelberg) and machine tool spindles, where reducing vibration and heat generation is a primary technical trend. Volza Bearingbasement