23940CA

The 23940CA, as a self-aligning roller bearing, is primarily designed to provide high stability support for medium-speed equipment that bears heavy loads, vibrational loads, and has axis alignment deviations. It features a two-row roller structure, with an outer ring having one shared spherical raceway and an inner ring having two inclined raceways. It has the automatic self-aligning performance, which can compensate for coaxiality errors and is suitable for scenarios where the shaft is prone to bending or has difficulty in alignment. The inner ring and rollers are mostly made of high-carbon chromium bearing steel (such as GCr15), and after heat treatment, they have excellent hardness and fatigue resistance. The "CA" suffix clearly indicates its compatibility with a brass solid cage, which can reduce roller friction and wear and ensure smooth operation. For example, the 23940CAE4 model of the NSK brand has a rated dynamic load of 570,000 N, a static load of 1,060,000 N, a grease lubrication limit speed of 1,100 r/min, and an oil lubrication limit speed of 1,400 r/min. It can withstand large radial loads and certain axial loads and is widely used in heavy industries such as mining machinery, metallurgical equipment, cement machinery, paper machinery, and wind power equipment, capable of meeting the vibration and impact load requirements of equipment and ensuring long-term stable operation.