second trunnions 46 first trunnions 44 are adapted for insertion into apertures 28 in legs 22 of first yoke 16 so as to be axially aligned on first trunnion axis y similarly second trunnions 46 are adapted to be inserted into apertures 38 in legs 32 of second yoke 18 so as to be axially aligned on second trunnion axis z with first trunnions 44 and second trunnions 46 installed in first and second yokes 16 and 18 respectfully trunnion axes y and z pass through a common plane which orthogonally intersects the rotary axis of cruciform 20 shown in fig1 by construction plane c universal joint 10 also includes a first pair of bearing cups 48 adapted to be mounted in apertures 28 and a second pair of bearing cups 50 adapted to be mounted in apertures 38 first bearing cups 48 are provided for receiving and rotatably supporting first trunnions 44 in apertures 28 similarly second bearing cups 50 are provided for receiving and rotatably supporting second trunnions 46 in apertures 38 as seen bearing cups 48 and 50 each include a tubular sleeve segment 49 enclosed by an end segment 51 a roller bearing assembly 52 is mounted in the sleeve segment for rotatably supporting trunnions 44 and 46 therein in addition annular elastomeric seals 54 are mounted on trunnions 44 and 46 respectively for providing a sealed relationship with respect to the open end of the sleeve segments 49 of bearing cups 48 and 50 respectively to assemble the universal joint 10 one of the bearing cups 48 is mounted.