Seal for a bearing bush

US6357754B1 · kind B1 · utility

Assignee

• INA Wälzlager Schaeffler oHG · DE

Inventors

• Guido Rieder · Pfullendorf, DE
• Siegfried Gotz · Eschborn, DE
• Manfred Würch · Herzogenaurach, DE
• Martin Kruppa · Herzogenaurach, DE

Key dates

• Filing date: May 30, 2000
• Grant date: Mar 19, 2002
• Expiry date: May 30, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2361/41
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The sealing arrangement for a bearing bushing includes a reinforced seal (2) which is arranged in force-fitting manner against the inner wall (4) of the bearing bushing (1). The reinforcement (3) of the seal (2) forms a radially inwardly directed arm (14) for attachment of a rotary shaft seal (8) which is disposed between the arm (14) and the rolling bodies (7). The seal (2) is further provided with a sealing lip (15) which faces away from the rotary shaft seal (8) and is supported by a sealing element (5). The sealing element (5) assumes the function of a protective cap and of anterior seal and includes a reinforcement ring (16) having an arm (17) circumscribing an end zone (19) of the bearing bushing (1). A radially inwardly directed flange (18) of the reinforcement ring (16) is rubberized on an end face. The rubber packing (22) further circumscribes the free end of the flange (18) and is secured in fixed rotative engagement to the pin (6).