NTN self-aligning roller bearings, also known as spherical roller bearings, are renowned for their versatility and robustness. As one of the most commonly used bearings, they are designed with two rows of symmetrical spherical rollers, which can align themselves, hence the term 'self-aligning.' This unique feature allows them to tolerate misalignment and shaft deflection without any significant loss in their bearing life or frictional heat generation. The primary use of NTN self-aligning roller bearings is in heavy-duty machinery, particularly in industries such as steel, mining, construction, and power generation. These bearings are designed to withstand high radial loads and moderate axial loads, making them ideal for applications that require heavy load carrying capacity and shock resistance. In the steel industry, NTN self-aligning roller bearings are used in rolling mills due to their high load capacity and self-aligning feature. These bearings are crucial in the operation of th…