A DEVELOPMENT OF A TRACTION ROLLER SYSTEM--A STUDY ON ITS TORQUE CAPACITY

Experimental tests were conducted on a high speed planetary roller system which can work as a speed increaser. Four models of the roller system were tested which have different normal load applied on the rollers. The output shaft speed was from 60000 to 90000 rpm. On the roller system, the traction coefficient and the slip ratio were measured and the results were compared with the estimation by the EHL theory. The proportional limit of traction coefficient f for slip ratio S was about 0.05 in this experiment. The traction coefficient of the outer contact which has larger normal load was smaller than that of the inner one and both are insensitive to rotational speed. The reason for this was attributed to oil temperature. Higher temperature causes reduction of dynamic viscosity and viscosity-pressure coefficient and accordingly of traction coefficient.

  • Supplemental Notes:
    • Proceedings of the 19th International Fisita Congress, Melbourne, November 8-12, 1982.
  • Corporate Authors:

    Society of Automotive Engineers

    191 Royal Parade
    Parkville, Victoria 3052,   Australia 
  • Authors:
    • Someya, T
    • Okano, H
    • Okamura, H
  • Publication Date: 1982-11

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00384669
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAEA 82075, HS-035 685
  • Files: HSL, USDOT
  • Created Date: Apr 30 1984 12:00AM