A pneumatic brake actuator (200) has a housing (204) and a divider (202) dividing the housing into a pressure chamber (208) and a spring chamber (206). The divider presents an opening (220) that is surrounded by an interior surface (222). An actuator tube (226) abuts the divider and comprises an inner surface (228). A bearing (224) comprising an outer surface is joined to the interior surface of the divider and to the inner surface of the actuator tube.
