Performance evaluation of innovative micro-traction-drive-utilized angular-contact bearing

Yasuyoshi Tozaki, Akihiko Umeda, Hiroyuki Sonobe, Susumu Matsumoto, Takeshi Yoshimi, Isamu Shiotsu

Research output: Contribution to journalArticle

Abstract

Traction drive makes oil film between two rollers, and power is transmitted by oil film shearing. It has the following characteristics. (1) Traction drive can be operated at low level of vibration and noise, so they are more suitable at higher speed rotations than gear. (2) Traction drive can change continuously the distance from the contact point of the rotating part to the axis of rotation; it is useful in continuously variable transmission (CVT). Generally-fixed-reduction-ratio-type traction drive is developed for the purpose of use by high-speed rotation taking advantage of the feature of characteristic (1). On the other hand, the authors have developed a micro drive system for transmission; a microtraction-drive based on the structure of an angular ball bearing is advantageous over geared speed reducers, for small scale equipment requiring high numbers of revolutions. A micro-traction-drive is easily manufactured by modifying angular bearings and tapered roller bearings for which preload inner race and outer race act as thrust force. The driving force is transmitted by the contact of the retainer with the rolling element in the rotating direction. The test of the experimental model of micro-traction-drive using an angular ball bearing of 10 mm inner diameter, 30 mm outer diameter and 9 mm width was carried out. Power-absorbing-type test equipment was made and the input and output torque, number of revolutions, temperature, noise, and state of lubrication were measured. With the same test equipment, the micro-traction-drive was compared to the equivalent type planetary gear with outer diameter of 32 mm on the market. In comparison with commercially available speed reducers, the planetary gear system, the newly developed micro-traction was found to bear superior performance in terms of allowable transmission torque, efficiency, noise, and other characteristics.

Original languageEnglish
Pages (from-to)262-266
Number of pages5
JournalJournal of Tribology
Volume128
Issue number2
DOIs
Publication statusPublished - 2006 Apr

Fingerprint

Bearings (structural)
traction
evaluation
Speed reducers
Gears
ball bearings
Ball bearings
test equipment
torque
Oils
Torque
oils
Tapered roller bearings
high speed
roller bearings
axes of rotation
noise temperature
rollers
Point contacts
lubrication

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Tozaki, Y., Umeda, A., Sonobe, H., Matsumoto, S., Yoshimi, T., & Shiotsu, I. (2006). Performance evaluation of innovative micro-traction-drive-utilized angular-contact bearing. Journal of Tribology, 128(2), 262-266. https://doi.org/10.1115/1.2162177

Performance evaluation of innovative micro-traction-drive-utilized angular-contact bearing. / Tozaki, Yasuyoshi; Umeda, Akihiko; Sonobe, Hiroyuki; Matsumoto, Susumu; Yoshimi, Takeshi; Shiotsu, Isamu.

In: Journal of Tribology, Vol. 128, No. 2, 04.2006, p. 262-266.

Research output: Contribution to journalArticle

Tozaki, Y, Umeda, A, Sonobe, H, Matsumoto, S, Yoshimi, T & Shiotsu, I 2006, 'Performance evaluation of innovative micro-traction-drive-utilized angular-contact bearing', Journal of Tribology, vol. 128, no. 2, pp. 262-266. https://doi.org/10.1115/1.2162177
Tozaki, Yasuyoshi ; Umeda, Akihiko ; Sonobe, Hiroyuki ; Matsumoto, Susumu ; Yoshimi, Takeshi ; Shiotsu, Isamu. / Performance evaluation of innovative micro-traction-drive-utilized angular-contact bearing. In: Journal of Tribology. 2006 ; Vol. 128, No. 2. pp. 262-266.
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