Planetary drive, comprising starting disks provided with layer of combined materials

摘要

The planetary drive (1) comprises a sun wheel (2), meshing with a planet wheel (3), meshing with a ring gear (4). The planet wheel (3) is attached with a needle-, slide-, or roller bearing (8) to a bolt (5) joined with both ends to a planet carrier (7). Starting disks (9.1, 9.2) are positioned on both sides of the planet wheel (3), also touching the bearings (8). The disks (9) are made of a case-hardened metal coated with a layer of wolfram, carbon and carbide.