A riser hinge (10) is disclosed which includes a mounting flange assembly (12) pivotally coupled to a strap assembly (15). The cylindrical portion (52) includes an upper strap bearing (54) and a lower strap bearing (55) which are each mounted partially within the cylindrical portion. The strap cylinder portion has a space (82) which includes an enlarged portion (83) flanked by narrowed portions (84) at stop ledges (85). The upper strap bearing and lower strap bearing each have a vertically oriented, elongated, locking tongue or flange (87) with a narrowed portion (88) extending to an enlarged portion or stop (89), which enables them to be removably mounted within the space.