... ,PH housings are validBEARING TYPE:1.Deep groove ball bearing, 2.Self aligning ball bearing,3.Thrust ball /roller bearing, 4.Spherical roller bearing,5 ... .Cylinderical roller bearing. 6.Tapered roller bearing,7.Angular contact ball bearing, 8.Needle roller bearing,9.Pillow block bearing, 10.Linear bearing, 11.Special bearing,12 ...