Planetary drive for use in planetary gear, has sealing unit for sealing sun wheel at housing, and gap formed at side of rolling bearing between sun wheel and supporting disk, where gap leads to axial bearing that supports planetary carrier

摘要

The drive (1) has a housing (2) comprising a sun wheel (4) and a planetary carrier (7) comprising planetary gears (5). A hole (9) is formed at the housing, and ends in an intermediate area (10) between a rolling bearing (3) i.e. angular ball bearing, and a sealing unit i.e. sealing ring (11), where the bearing supports the sun wheel at the housing. The sealing unit seals the sun wheel at the housing, and a gap (13) is formed at a side of the rolling bearing between the sun wheel and a supporting disk (8), where the gap leads to an axial bearing (15) that supports the planetary carrier.