Planetary roller type power transmission device

Details Planetary roller type power transmission device Planetary roller type power transmission device

1997-03-27

1998-12-22

Wright, Dirk

Planetary gear transmission systems or components

Planet pinion is friction gear

F16H 1308

Patent

active

058511636

ABSTRACT:
Plating 5 having good slide friction characteristics is applied onto the pocket surfaces 4a1, 4a2, which are opposite each other in the circumferential direction of the pockets 4a of the carrier and onto the end face 4a3 in the axial direction. It is possible to improve the lubrication conditions at the contacting area of the outer circumferential surface of the planetary rollers and the pocket surface 4a1 of the carrier 4 by coating the plating 5 having good slide friction characteristics onto the pocket surfaces 4a1,4a2 of the pocket 4 of the carrier 4 and further onto the end face 4a3. That is, the friction force at the contacting area is able to be decreased by the plating 5 having good friction characteristics, whereby even in a case where the contacting area is lubricated with a little lubricant, thermal deterioration of the lubricant due to heat generation of the contacting area is suppressed and good lubrication actions can be expected.

REFERENCES:
patent: 4121331 (1978-10-01), Fukuma et al.
patent: 4157668 (1979-06-01), Fukuma et al.
patent: 4296648 (1981-10-01), Okano et al.
patent: 4916981 (1990-04-01), Suzuki et al.
patent: 4950110 (1990-08-01), Suzuki

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