ASSEMBLY AND METHOD FOR MOUNTING A PUMP BEARING IN/ON PLASTIC COOLANT PUMP HOUSINGS

摘要

The invention relates to an assembly and a method for mounting a pump bearing in/on plastic coolant pump housings. The aim of the invention is to create an assembly that is easy to produce and mount as well as an inexpensive and simple method for arranging pump bearings in/on plastic coolant pump housings, said assembly and method making it possible to temper the plastic housing and use bearings featuring little clearance with all resulting advantages, such as an extended service life, less noise, stress relief on the shaft sealing ring or the rotating mechanical seal, and others. Said assembly comprises a pump bearing (3) ring (2) that is fitted with at least one bearing groove (1) and is disposed in/on a bearing seat (4) of a plastic coolant pump housing (5) with an axial bearing collar (6), and several positioning webs (7) which are located on the bearing seat (4). The inventive assembly is characterized in that separate adhesive grooves (8) are placed between the positioning webs (7) and the bearing collar (6). Said adhesive grooves (8) are provided with liquid-tight walls (9) in four of the axial directions, an opening in the direction of the pump bearing (3) ring (2), and slot-shaped adhesive pockets (10) in the area of the outer edge of the pump bearing (3). The inventive method is characterized in that an adhesive is spread onto the cylindrical surface and/or the bearing groove (1) of the bearing ring (2) and/or into/onto the bearing seat (4) encompassing positioning webs (7), whereupon the bearing ring (2) that is to be joined is pressed into/onto the bearing seat (4) formed by positioning webs (7) until the same rests on the bearing collar (3). The pump bearing (3) that is arranged in the plastic coolant pump housing (5) is then inductively heated to a temperature ranging from about 100 °C to 125° C for two to ten seconds while the adhesive pockets (10) face upward.