COM Series spherical bearing. Made with alloy steel race. With bore size of 1 1/2". Includes PTFE race lining. For those special applications, QA1's HCOM and HCOM-T Large Bore Series spherical bearings are a great solution. With bore sizes from one to two inches, these spherical bearings are ideal for large applications. Each bearing is made from chromoly steel with an optional self-lubricating PTFE liner.