Seal
AssigneeSchaeffler KG
InventorsRainer Schenk, Ralph Painta
Life of this patent
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Abstract
The present invention relates to a seal for a pulley (1) on a roller bearing. For this purpose a sealing cap (19a), which covers the front face of the roller bearing (2) and is connected to a hub (9), externally enclosing the roller bearing (2), is externally assigned to the roller bearing (2). On the opposite side the roller bearing (2) has a sealing plate (24a), which is likewise fixed to the hub (9) and on the inner side interacts with a cylindrical section (27) of the fixed housing (5).
Claims21
A seal for a roller bearing (2), the seal comprising a sealing plate (24a, 24b) which is externally fixed to a rotating hub (9) enclosing the roller bearing (2) and which internally interacts with a rotationally fixed housing (5), on which an inner bearing ring (3) of the roller bearing (2) is positioned, characterized in that the sealing plate (24a, 24b) is fixed at least with a positive interlock to the hub (9), a separate sealing medium being provided between the sealing plate (24a, 24b) and the hub (9), and the sealing plate (24a, 24b) being internally tightly connected by means of an elastic seal (29) or an elastic medium (35) to the housing (5), at least a bracing force of the elastic seal (29) being reduced as the rotational speed of the roller bearing increases.
A seal for a roller bearing, the seal comprising a sealing cap (19a, 19b) of cup-shaped design, which is assigned to a hub (9) externally enclosing the roller bearing (2) and which covers the front face of the roller bearing (2), characterized in that the sealing cap (19a, 19b) is fixed both by positive interlock and by force-locking to the hub (9), a separate elastic sealing medium being used in a fitting space (38), an axial accoimnodation between the sealing cap (19a, 19b) and the hub (9).
Dependencies are inferred from the claim text.