Tandem thrust bearings  M5CT1858 are designed to be used in horizontal shaft applications (extruder gear drives) and it is essential that a sufficient thrust load be applied to prevent roller slip. Typically, the minimum load required is expressed as a ratio of the bearing's dynamic load rating (C)to the applied load (P). Loads representing C/P > 12 must be avoided and  loads where C/P falls between 8 and 12 should be avoided. M5CT2264 is 5 stages thrust roller bearing with inner dia:22mm size,outer  diameter:64mm ,the height:128.5mm